Exercise 5: Use the built-in ImageCell (XAM280)
This final exercise will provide a better visualization for the rows so that you see the image, country and date adopted.
To complete the exercise, you will need Visual Studio for Windows or macOS with the Xamarin development tools installed. You will also need either an emulator/simulator or a device to run the exercise on. Please see the setup page if you need help installing the Xamarin development environment.
Open the starter solution
This exercise is a continuation of the previous exercise. You can use your existing solution or begin from the prior Exercise 4 > Completed solution in your copy of the cloned or downloaded course materials.
Add a DataTemplate to the ListView
The first thing you need to do is assign a DataTemplate
definition to the ListView.ItemTemplate
property.
- Open the AllFlags.xaml markup page.
- Assign the
ListView.ItemTemplate
property to a newDataTemplate
.
<ListView ItemsSource="{Binding Flags}"
SelectedItem="{Binding CurrentFlag, Mode=TwoWay}"
ItemTapped="OnItemTapped"
IsPullToRefreshEnabled="True"
Refreshing="OnRefreshing">
<ListView.ItemTemplate>
<DataTemplate>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Define an ImageCell for our row visualization
Next, you need to supply the visual instructions for the row - these go into the DataTemplate
definition. The ListView
requires that this always be a Cell
type, so you'll use an ImageCell
here.
- Inside the
DataTemplate
, define anImageCell
. - Set the
DetailColor
to "Gray". -
Remember that the
BindingContext
for the row will be a singleFlag
object definition. Apply{Binding}
values for the following properties.Text
>Country
.Detail
>DateAdopted
, use theStringFormat
"'Adopted on {0:d}'".
<ListView.ItemTemplate>
<DataTemplate>
<ImageCell DetailColor="Gray"
Text="{Binding Country}"
Detail="{Binding DateAdopted, StringFormat='Adopted on {0:d}'}" />
</DataTemplate>
</ListView.ItemTemplate>
Run the application to see what it looks like now, you should see something like this.
Notice how the flags are different sizes on iOS and UWP, but not on Android? In fact on UWP, they are massive images because the native control rendering them goes ahead and uses the full size of the image! You'll look at ways to fix this problem in XAM312 - Customizing ListView but for now, you can provide smaller images which are the correct scale/size for displaying in a list. The completed version of this lab adds a new property to the Flag
"SmallImageUrl" which has a much smaller image of each flag using a consistent size with a 4px transparent border around it.
Do the final image binding on the ImageCell
The last step is to provide the ImageSource
for our ImageCell
.
- You need a Value Converter to load the images for our ListView. You already have one setup in the details page. You just need to move it to a more global scope so it's available in your list page. Open the FlagDetailsPage.xaml markup page and move the
ResourceDictionary
into theApp.xaml
file. You'll need to move the namespace definitions for the converters (xmlns:cvt) and data (xmlns:data). - Next, open the AllFlags.xaml file and data bind the
ImageCell.ImageSource
property to theImageUrl
property using the converter. Check the syntax in theFlagDetailsPage
page where it uses the same converter for theImage
if you need some guidance. - Run the application to see the final results and then comment this code out and try it in code behind.
<!--Application XAML-->
<Application...>
<Application.Resources>
<!-- Application resource dictionary -->
<ResourceDictionary>
<cvt:EmbeddedImageConverter x:Key="irConverter"
ResolvingAssemblyType="{x:Type data:Flag}" />
</ResourceDictionary>
</Application.Resources>
<!--Page XAML-->
<ImageCell DetailColor="Gray"
ImageSource="{Binding ImageUrl, Mode=OneWay, Converter={StaticResource irConverter}}"
Text="{Binding Country}"
Detail="{Binding DateAdopted, StringFormat='Adopted on {0:d}'}" />
Notice how the flags are different sizes on iOS and UWP, but not on Android? In fact on UWP, they are massive images because the native control rendering them goes ahead and uses the full size of the image! You'll look at ways to fix this problem in XAM312 - Customizing ListView but for now, you can provide smaller images which are the correct scale/size for displaying in a list. The completed version of this lab adds a new property to the Flag
"SmallImageUrl" which has a much smaller image of each flag using a consistent size with a 4px transparent border around it.
Exercise summary
In this exercise, you provided a new row visualization for the ListView so you can see an image and some details about the contact prior to selecting them.
You can view the completed solution in the Exercise 5 > Completed folder of your copy of the cloned or downloaded course materials.


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Taking the existing ephemeral qualities of a densely populated area in Hong Kong in consideration, the Porous Extrusion aimed to create dwellings that allow the right amount of ventilation, sunlight, and the view of sky for every residential units on the tower without ruining these qualities of the existing site.


Sia
-
Move Your Body (Alan Walker Remix)
[by:NickyRomero] 作曲 : Sia Furler/Greg Kurstin 作词 : Sia Furler/Greg Kurstin 编曲：Alan Walker/Greg Kurstin/Anders Froen Oh... -
Beautiful Pain
I can feel the heat rising, everything is on fire Today is a painful reminder of why We can only get brighter, the furth...  -
Titanium
You shout it out But I can't hear a word you say I'm talking loud not saying much I'm criticized But all your bullets ri... -
Bang My Head
[by:dzg_] I was bound, was tired Hadn't seen a light for so long Thought I lost my fight Couldn't find my way back home ... -
Bang my Head
[by:dy2084] [offset:0] I was bound, was tied Hadn't seen a light so long Thought I lost my fight Couldn't find my way ba... -
Helium (Sia vs. David Guetta & Afrojack)
I'm trying but I keep falling down I cry out but nothing comes now I'm giving my all and I know peace will come I never ... -
She Wolf (Falling to Pieces)
[by:starvsheep] A shot in the dark A past,lost in space And where do I start? The past and the chase? you hunted me down... -
Thunderclouds (Lost Frequencies Remix)
[by:Trap_Girl] 作曲 : Philip Meckseper/Thomas Wesley Pentz/Sia Furler/Timothy McKenzie/Henry Agincourt Allen 作词 : Philip... -
Wild Ones
Hey I heard you were a wild one Oooh If I took you home It'd be a home run Show me how you'll do I wanna shut down in th... -
Genius (Lil Wayne Remix)
[by:Trap_Girl] 作曲 : Thomas Pentz/Sia Furler/Philip Meckseper/Timothy McKenzie 作词 : Dwayne Carter/Sia Furler/Timothy Mc... -
Elastic Heart
And another one bites the dust Oh, why can I not conquer love? And I might have thought that we were one Wanted to fight... -
Guts Over Fear
Feels like a close, it's coming to *********** am I gonna do? It's too late to start over This is the only thing I, thin... -
Thunderclouds
[Verse 1: Sia] [Pre-Chorus: Sia & Labrinth] [Chorus: Labrinth & Sia] [Verse 2: Labrinth] [Pre-Chorus: Labrinth & Sia] [C... -
Cheap Thrills Remix
Sia N. I. C. K Nicky Jam Spanglish version Come on Come on (turn the radio on) Porque tengo ganas de bailar No tengo un ...  -
Cheap Thrills
Come on, come on Turn the radio on It's Friday night and I won't be long Gotta do my hair I put my make-up on It's Frida... -
I'm In Here
[by:Sampson劉小言] 作曲 : Sia/Samuel Dixon 作词 : Sia/Samuel Dixon I'm in here Can anybody see me? Can anybody help? I'm in h... -
No New Friends
作曲 : Thomas Pentz, Jr./Timothy McKenzie/Sia Furler/Henry Agincourt Allen/Philip Meckseper 作词 : Thomas Pentz, Jr./Timot... -
My Love
My love, leave yourself behind Beat inside me, leave you blind My love, you have found peace You were searching for rele...  -
California Dreamin'
[by:绿茶鸡腿] All the leaves are brown and the sky is gray I've been for a walk on a winter's day I'd be safe and warm if I ... -
Je te pardonne (Pilule Bleue)
[by:Sampson劉小言] Tu m'as demandé pardon, j't'ai repoussé (repoussé) J'voulais qu'tu comprennes que je souffrais (je souff... -
Audio
We got a ride, we got the night I got the bottle, you got the light We got the stars (stars) We got audio We're gonna f... -
Elastic Heart
And another one bites the dust Oh, why can I not conquer love? And I might have thought that we were one Wanted to fight... -
To Be Human
[by:immaculatewhore] Under rich, relentless skies I've been setting highs I felt you walk right through me You're the th... -
Ho Ho Ho
[by:Trap_Girl] Ho ho ho, bring a bottle of rum Ho ho ho, cream and whiskey bourbon Ho ho ho, bring a bottle of booze We ... -
Breathe Me
作曲 : Sia Furler & Dan Carey 作词 : CAREY, D/FURLER, SIA Help, I have done it again I have been here many times before Hu... -
Alive
[by:刘玄明童鞋] I was born in a thunderstorm I grew up overnight I played alone, I'm playing on my own I survived Hey, I wan... -
Battle Cry
Money cannot buy All the love that’s here tonight All the love that’s here tonight It’s just you and I So lift your han... -
Wolves
[by:nostaticsin] 作曲 : Kanye West/Christopher Breaux/Sia Furler/Victor Mensah/Magnus Høiberg/Alan Brinsmead/Mike Dean/No... -
Mountains
[by:Trap_Girl] 作曲 : Timothy McKenzie/Thomas Wesley Pentz/Sia Furler 作词 : Timothy McKenzie/Sia Furler Heck yeah, I brea... -
Midnight Decisions
[by:小陀螺Tony] Remember when we had it all? Remember when you took my calls?  -
Free Me
[by:Jarson1114] [ti:] [ar:] [al:] [by:九九Lrc歌词网～www.99Lrc.net] I don’t want to hold your gaze I’m scared what I might see...  -
Reaper
Broke down Thought that I would drown Hope that I've been found Before I hit the ground Some day out the corner of my ey... -
Santa's Coming For Us
[by:Trap_Girl] Night's are getting shorter now hot chocolate Fills the air and Christmas cheer does too Pick a merry old... -
That's Life
[by:Trap_Girl] They told me don't make a promise you can't keep All the drugs in your system, you can't sleep How many t... -
I Go To Sleep
When I look up from my pillow I dream you are there with me Though you are far away I know you'll always be near to me I... -
Confetti
[by:小陀螺Tony] We had love so strong my heart couldn't take it You took it in your hands and resuscitate it You said "Me a... -
Rainbow
[by:Trap_Girl] I know you You're a special one Some see crazy, where I see love You fall so low But soar so high Big dre... -
Waterfall (Seeb Remix)
[by:Len_Tro] 作曲 : Philip Meckseper/Thomas Pentz/Sia Furler/Mikkel Storleer Eriksen/Tor Erik Hermansen 作词 : Philip Meck... -
No New Friends
作曲 : Thomas Pentz, Jr./Timothy McKenzie/Sia Furler/Henry Agincourt Allen/Philip Meckseper 作词 : Thomas Pentz, Jr./Timot... -
Welcome to the Wonderful World of
[by:Trap_Girl] 作曲 : Timothy McKenzie/Sia Furler/Thomas Pentz, Jr. 作词 : Timothy McKenzie/Sia Furler All eyes on we Let'... -
Genius
[by:以康君] 作曲 : Sia Furler/Thomas Wesley Pentz Jr.(Diplo)/Timothy "Labrinth" McKenzie/ Philip Meckseper 作词 : Sia Furler/... -
Mountains
[by:Trap_Girl] 作曲 : Timothy McKenzie/Sia Furler/Thomas Pentz, Jr. 作词 : Timothy McKenzie/Sia Furler Heck yeah, I breath... -
Audio
作曲 : Timothy McKenzie/Sia Furler/Thomas Pentz, Jr./Philip Meckseper/Henry Agincourt Allen 作词 : Timothy McKenzie/Sia Fu... -
Heaven Can Wait
作曲 : Timothy McKenzie/Sia Furler/Thomas Pentz, Jr./Philip Meckseper 作词 : Timothy McKenzie/Sia Furler The doctor just g... -
Audio (CID Remix)
[by:Trap_Girl] 作曲 : Thomas Wesley Pentz/Philip Meckseper/Henry Agincourt Allen/Timothy McKenzie/Sia Furler 作词 : Thomas... -
Thunderclouds (MK Remix)
[by:小陀螺Tony] 作曲 : Philip Meckseper/Thomas Wesley Pentz/Sia Furler/Timothy McKenzie/Henry Agincourt Allen 作词 : Philip M... -
No New Friends (Hibell Remix)
[by:冬冬爱吃星巴克] 作曲 : Thomas Wesley Pentz/Timothy McKenzie/Sia Furler/Henry Agincourt Allen/Philip Meckseper 作词 : Thomas W... -
Genius (Banx & Ranx Reggae Remix)
[by:工作婊] 作曲 : Thomas Wesley Pentz/Philip Meckseper/Timothy McKenzie/Sia Furler 作词 : Thomas Wesley Pentz/Philip Mecksep... -
No New Friends (Dombresky Remix)
[by:冬冬爱吃星巴克] 作曲 : Thomas Wesley Pentz/Timothy McKenzie/Sia Furler/Henry Agincourt Allen/Philip Meckseper 作词 : Thomas W... -
Unstoppable
[by:只是因为在人群中多射了你一脸] All smiles I know what it takes to fool this town I'll do it 'til the sun goes down and all through... -
The Greatest
Uh-oh, running out of breath, but I Oh, I, I got stamina Uh-oh, running now, I close my eyes Well, oh, I got stamina And... -
Chandelier
Party girls don't get hurt Can't feel anything, when will I learn I push it down, push it down I'm the one "for a good t... -
Never Give Up
[by:蠢梨Sherry] I've battled demons that won't let me sleep Called to the sea but she abandoned me But I won't never give ... -
Dusk Till Dawn
作曲：Zayn Malik/Greg Kurstin/Sia Furler/Alex Oriet/David Phelan 作词：Zayn Malik/Greg Kurstin/Sia Furler ZAYN： Not tryna be ... -
Bird Set Free
[by:小陀螺Tony] Clipped wings, I was a broken thing Had a voice, had a voice but I could not sing You would wind me down I ... -
Helium
I'm trying but i keep falling down I cry out but nothing comes now I'm giving my all And I know peace will come I never...


Debugging Silverlight 4 applications under Visual Studio is a nice advantage of the tight integration that Microsoft provides with their tooling for rich Internet application development. However, it can be somewhat confusing if you get off the beaten path at all or if you end up with a mis-configured project setting somewhere down the road.
As you might have seen in one of my previous posts, setting up one of the Web applications in your solution as the host project for your Silverlight code is not very difficult.
When the project is started for the first time Visual Studio will prompt you with the following dialog:
Choosing yes to this dialog will enable Silverlight debugging and save the dialog preference in the .user file for the project. Deleting the .user file will cause Visual Studio to prompt you once again for this setting. However, we can manually enable Silverlight debugging very easily on the properties pane for the Web site that is hosting the Silverlight component. The following screen shot shows you where the setting is:
It is worth noting that the tradeoff we make for Silverlight debugging is that Visual Studio will not attach itself as a Javascript debugger as it normally would. If you are having trouble visualizing what that means, consider the next screenshot showing how Visual Studio normally loads the Javascript code up for inspection right in the Solution Explorer:
Attaching Visual Studio as a Silverlight debugger affects System.Diagnostics.Debugger.IsAttached in the running Silverlight code. The default boilerplate code that is generated by Visual Studio uses this to detect how to deal with unhandled exceptions at the top level of the application in App.xaml.cs. If a debugger isn’t attached it attempts to write the exception details out to the browser using Javascript. See the following code snippet:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
|
Hopefully this give you a little insight on what is going on when you attempt to debug Silverlight code from within Visual Studio and how to get the debugger attached again if something gets messed up.


and that’s definitely an understatement.
hi is here to help. we've created a game to help guide you through awkward virtual settings.
whether that means you're talking with a fellow coworker, on a date, or just looking for something to do, we've got you.


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This interactive dashboard provides a platform for you to explore results of the Central Coast and North Central Coast Monitoring Surveys. California Ocean Science Trust, together with its partners at the California Department of Fish and Wildlife and the California Ocean Protection Council, is using these results to help design and implement the next phase of MPA monitoring in these regions.
We encourage you to explore this site to learn about the monitoring projects in these regions, make new connections, and continue to build up the network of the monitoring community!
Use the tabs on the left for the following information:
- Monitoring Activities - Use the interactive map to find the types and locations of data collected in the Central Coast and North Central Coast.
- Central Coast (CC) Community Overview - Learn about the organizations that are collecting data in the Central Coast.
- North Central Coast (NCC) Community Overview - Learn about the organizations that are collecting data in the North Central Coast.
- About - Learn more about this dashboard, the Central Coast and North Central Coast Monitoring Surveys, and the monitoring planning efforts that are underway.


Birds of Prey: How Harley Quinn Will Evolve in the Film
by John RidlehooverAs expected, Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn) will explore the mind of Margot Robbie's Harley Quinn, according to director Cathy Yan and producer Sue Kroll.
Yan and Kroll recently spoke with Screen Rant about the emotional evolution Quinn will go on through in the film. "I think there's such a duality in Harley Quinn, even in just the blue and the pink, and Dr. Harleen Quinzel versus Harley Quinn," commented Yan. "Both sides of her are there, and she’s still very much the smart doctor that she once was."
Click the button below to start this article in quick view.
Yan went on to mention the other side of Harley's persona, including how she has low self-esteem and can be easily manipulated. "So I think this is a great opportunity to explore the woman behind 'Harley Quinn,' and explore that duality, and dive deeper into her psyche," she continued.
Kroll added that the portrayal of Harley Quinn's morality in the film is "complex." "She comes away as somebody who's much more complicated rather than sort of singular… ‘nuts,’" said Kroll.
Directed by Cathy Yan from a script by Christina Hodson, Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn) stars Margot Robbie, Jurnee Smollett-Bell, Mary Elizabeth Winstead, Rosie Perez, Ewan McGregor, Steven Williams, Derek Wilson, Dana Lee, Francois Chau, Charlene Amoia, Chris Messina and Matthew Willig. The film is scheduled for release on Feb. 7, 2020.
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http:bit.ly/1uMgERy"JavaScript is a cross-platform, object-oriented scripting language. JavaScript is a small, lightweight language; it is not useful as a standalone language, but is designed for easy embedding in other products and applications, such as web browsers. Inside a host environment, JavaScript can be connected to the objects of its environment to provide programmatic control over them."
-Mozilla Developer Network
Brandan Eich is a technilogist and the creator of the JavaScript scripting language.
For additional information on Brandan Eich, read Professional JavaScript for Web Developers Chapter 1: What is JavaScipt - A Short History
Client-side JavaScript extends the core language by supplying objects to control a browser (Navigator or another web browser) and its Document Object Model (DOM).
Server-side JavaScript extends the core language by supplying objects relevant to running JavaScript on a server.
-Mozilla Developer Network
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Document</title>
<script src="text/javascript" src="example1.js"></script>
<script src="text/javascript" src="example2.js"></script>
</head>
<body>
<!-- content here -->
</body>
</html>
Professional JavaScript for web developers page 16
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<title>Document</title>
</head>
<body>
<!-- content here -->
<script src="text/javascript" src="example1.js"></script>
<script src="text/javascript" src="example1.js"></script>
</body>
</html>
Professional JavaScript for web developers page 16
This element is used when browsers the does not support JavaScript. Any content inside contained in the noscript element will be displayed in the following circumstances:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Document</title>
</head>
<body>
<noscript>
<p> This page requires a JavaScript-enabled browser. </p>
</noscript>
</body>
</html>
Professional JavaScript for web developers page 22
including varibles, function names, and operators
Indenifier is the name of a variable, function, property, or function argument
Indenifiers could be one or more charaters of the following format:
JavaScript identifiers use camel casing
firstSecond
myCar
doSomethingImportant
JavaScript uses C-style comments for both single-line and block comments
A single-line comment begins with two forward-slash charaters
//single line comment
Block comment begins with a forward slash and asterick ( /* )
/*
* This is a multi-line
* comment
*/
Always comment your code..
ECMAScript 5 introduced the concept of Strict Mode. To Enable strict mode for an entire script, include the following at the top:
"use strict";
You can also specify just a function to execute in strict mode by including the pragma at the top of the function body:
function doSomthing(){
"use strict";
//function body
}
Statements in JavaScript are terminated by a semicolon.
var sum = a + b // valid even without the semicolon - not recomended
var diff = a - b; // valid - preferred
Muliple statements can be combined into a code block by using syntax beginning with a left curly brace ( { ) and ending with a right curly brace ( } ).
if (test){
test = false;
alert(test);
}
Control Statements, such as (if)
require code blocks only when executing
multiple statements
if (test)
alert(test); //valid but error-prone and should be avoided
if (test) {
alert(test); //preferred
}
Using code blocks for control statements make the intent clear and less chance for errors when changes are made.
Keyword has special meaning in the JavaScript language and are part of the syntax
Reserved words are word that cannot be used as indentifiers (variables, functions, etc.) because that are reserved by the language.
For additional information on keyword and reserved word go to Professional JavaScript for web developers page 28
JavaScript variable can hold any type of data. Every variable is simply a named placeholder for a value. To define a variable, use a var
operator followed by the variable name.
var message;
Using the var keyword, you can declare one or more variables and optionally initialize them with a value
var task = "Write the first chapter.";
var task = "Write the first chapter.",
complete = true;
There are five data types (primitive types) in JavaScript
The Undefined type has only one value, which is the special value undefined
. When a variable is declared using var
but not initialized, it assigned the value of undefined
as follows:
var message;
alert(message == undefined); //true
Null is used when you want to declare a variable and intentionally express the absence of value
var car = null;
alert(typeof car)
if (car != null){
//do something with car
}
alert(null == undefined); //true
Boolean variables can only hold the values of true
or false
.
var found = true;
var lost = false;
JavaScript numbers are 64-bit floating point numbers
Example: Addition and concatenation
var foo = 5,
bar = 5;
console.log(foo + bar); //10
var foo = "5",
bar = "5";
console.log(foo + bar); //55
The most basic number number literal formation is that of a decimal interger which can be directly as shown below.
var intNum = 55; //interger
Intergers can also be represented as either octal (base 8) or hexadecimal (base 16). For an octal literal, the first digit must be a zero (0) followed by a sequence of octal digits (numbers 0 through 7). If a number out of this range is detected in the literal, then the leading zero is ignored and the number is treated as a decimal, as in the following examples:
var octalNum1 = 070; //octal for 56
var octalNum2 = 079; //invalid octal - interpreted as 79
var octalNum3 = 08; //invalid octal - interpreted as 8
To create a hexadecimal literal, you must make the first two characters 0x (case insensitive), followed by any number of hexadecimal digits (0 through 9, and A through F).
var hexNum1 = 0xA; //hexadecimal for 10
var hexNum2 = 0x1f; //hexedecimal for 31
Not-a-number or NaN is a special value that is returned by JavaScript with math functions fail, or when a function trying to parce a number fails. Strings with text in them that fail when parsed as a number (like isNaN("foo")) will return NaN.
Examples
var foo = "55" // could be "abc"
var myNumber = Number(foo); //Make it a number
if (isNaN(myNumber)){
console.log("It's not a number!");
}
//double negative - if NOT NOT a number
if (!isNaN(myNumber)) {
console.log ("It IS a number")
}
Strings hold all possigle string values.
"Hello, World!"
"1,2,3,4,5"
"!@#$%^&*()_+"
Strings can be delineated by either double quotes ( “ ) or single quotes ( ‘ ), so both of the following are legal:
var firstName = “Nicholas”;
var lastName = ‘Zakas’;
Proper use of Single Quotes and Double Quotes
var phrase = 'Don't mix your quotes.'; // incorrect
var phrase = "Don't mix your quotes."; // correct
Objects are created by using the new operator followed by the name of the object type to create. Almost "everthing" in JavaScript are treated as objects. Developers create their own objects by creating instances of the Object type and adding properties and/or methods to it, as shown here:
var o = new Object();
Each Object instance has the following properties and methods:
The example crates an object called "person" and adds four properties to it
var person = {firstName: "John" , lastName: "Doe" , age: 50, eyeColor: "blue"};
Spaces and line breaks are not important. An object declaration can span multiple lines.
var person = {
firstName: "John",
lastName: "Doe",
age: 50,
eyeColor: "blue"
};
Operators can be used to manipulate data values. The operators range from mathematical operations (such as addition and subtraction) and bitwise operators to relational operators and equality operator
Operators that work on only one value are called unary operators. They are the simplest operators in JavaScript.
The increment and decrement operators are taken directly from C and come in two versions: prefix and postfix.
To use a prefix increment, which adds 1 to a numeric value, you place two plus signs (++) in front of a variable like this:
var age = 29;
++age;
In this example, the prefix increment changes the value of age to 30 (adding 1 to its previous value of 29). This is effectively equal to the following:
var age = 29;
age = age + 1;
The prefix decrement acts in a similar manner, subtracting 1 from a numeric value. To use a prefix decrement, place two minus signs (--) before a variable, as shown here:
var age = 29;
--age;
When using either a prefix increment or a prefix decrement, the variable’s value is changed before the statement is evaluated. (In computer science, this is usually referred to as having a side effect.) Consider the following:
var age = 29;
var anotherAge = --age + 2;
alert (age); //output 28
alert (anotherAge); //outputs 30
Almost as important as equality operators, Boolean operators are what make a programming language function. Without the capability to test relationships between two values, statements such as if...else and loops wouldn’t be useful. There are three Boolean operators: NOT, AND, and OR.
The logical NOT operator is represented by an exclamation point (!) and may be applied to any value in JavaScript
The following example illustrates this behavior
alert(!false); //true
alert(!”blue”); //false
alert(!0); //true
alert(!NaN); //true
alert(!””); //true
alert(!12345); //false
The logical AND operator is represented by the double ampersand (&&) and is applied to two values, such as in this example:
var result = true && false;
The logical OR operator is represented by the double pipe (||) in ECMAScript, like this:
var result = true || false;
The conditional operator is one of the most versatile in JavaScript, and it takes on the same form as in Java, which is as follows:
variable = boolean_expression ? true_value : false_value;
Comparison operators compare two values and return either true or false based on how they compare.
Equal returns true if both values are equal. If the values being compared are not of the same type, JavaScript first converts them and then applies a strict comparison.
1 == 1 // returns true
"1" == 1 // returns true ("1" converts to 1)
1 == true // returns true
0 == false // returns true
"" == 0 // returns true ("" converts to 0)
" " == 0 // returns true (" " converts to 0)
0 == 1 // returns false
1 == false // returns false
0 == true // returns false
var x, y; // declare x and y
x = {}; // create an object and assign it to x
y = x; // point y to x
x == y; // returns true (refers to same object in memory)
x == {}; // returns false (not the same object)
This is the same as equal, but it works in reverse: true is returned if the values are not equal. The same conversions described above apply here as well:
1 != 1 // returns false
"1" != 1 // returns false ("1" converts to 1)
1 != true // returns false
A strict equal comparison performs no conversion of types. Where "" == 0 would return true for a regular equal comparison, "" === 0 would not, since an empty string does not equal zero:
1 === 1 // returns true
"1" === 1 // returns false ("1" is not converted)
1 === true // returns false
0 === false // returns false
"" === 0 // returns false ("" is not converted)
" " === 0 // returns false (" " is not converted)
0 === 1 // returns false
1 === false // returns false
0 === true // returns false
var x, y; // declare x and y
x = {}; // create an object and assign it to x
y = x; // point y to x
x === y; // returns true (refers to same object in memory)
x === {}; // returns false (not the same object)
Strict not equal is the samle as strict equal except that it works in reverse. It returns true if the values are not equal. Again, no conversions are performed prior to comparison:
1 !== 1 // returns false
"1" !== 1 // returns true ("1" is not converted)
1 !== true // returns true
0 !== false // returns true
"" !== 0 // returns true ("" is not converted)
" " !== 0 // returns true (" " is not converted)
0 !== 1 // returns true
1 !== false // returns true
0 !== true // returns true
var x, y; // declare x and y
x = {}; // create an object and assign it to x
y = x; // point y to x
x !== y; // returns false (refers to same object in memory)
x !== {}; // returns true (not the same object)
Greater than returns true if the value on the left of the operator is greater than the value on the right. Note that type conversion implicitly occurs before comparison:
0 > 1 // returns false
1 > 1 // returns false
2 > 1 // returns true
2 > "" // returns true ("" converts to 0)
This returns true if the value on the left is greater than or equal to the one on the right. Note that type conversion implicitly occurs before comparison:
0 >= 1 // returns false
1 >= 1 // returns true
"1" >= 1 // returns true ("1" converts to 1)
This returns true if the value on the left of the operator is less than the value on the right. Note that type conversion implicitly occurs before comparison:
0 < 1 // returns true
1 < 1 // returns false
2 < 1 // returns false
2 < "" // returns false ("" converts to 0)
This returns true if the value on the left of the operator is less than or equal to the value on the right. Note that type conversion implicitly occurs before comparison:
0 <= 1 // returns true
1 <= 1 // returns true
"1" <= 1 // returns true ("1" converts to 1)
2 <= 1 // returns false
"2" <= 1 // returns false ("2" converts to 2)
One of the most frequently used statements in most programming languages is the if statement. The if statement has the following syntax:
if (condition) statement1 else statement2
Each of the statements can be either a single line or a code block (a group of code lines enclosed within braces). Consider this example:
if (i > 25)
alert(“Greater than 25.”); //one-line statement
else {
alert(“Less than or equal to 25.”); //block statement
}
It’s considered best coding practice to always use block statements, even if only one line of code is to be executed. Doing so can avoid confusion about what should be executed for each condition.
The do-while statement is a post-test loop, meaning that the escape condition is evaluated only after the code inside the loop has been executed. The body of the loop is always executed at least once before the expression is evaluated. Here’s the syntax:
var i = 0;
do {
i += 2;
} while (i < 10);
The while statement is a pretest loop. This means the escape condition is evaluated before the code inside the loop has been executed. Because of this, it is possible that the body of the loop is never executed. Here’s the syntax:
while(expression) statement
Here’s an example of its usage:
var i = 0;
while (i < 10) {
i += 2;
}
The for statement is also a pretest loop with the added capabilities of variable initialization before entering the loop and defining postloop code to be executed. Here’s the syntax:
for (initialization; expression; post-loop-expression) statement
If the body is executed, the postloop expression is also executed, iterating the variable i. This for loop is the same as the following:
var count = 10;
var i = 0;
while (i < count){
alert(i);
i++;
}
It’s important to note that there’s no need to use the var keyword inside the for loop initialization. It can be done outside the initialization as well, such as the following:
var count = 10;
var i;
for (i=0; i < count; i++){
alert(i);
}
The for-in statement is a strict iterative statement. It is used to enumerate the properties of an object. Here’s the syntax:
for (property in expression) statement
Here is an example of its usage:
for (var propName in window) {
document.write(propName);
}
The break and continue statements provide stricter control over the execution of code in a loop. The break statement exits the loop immediately, forcing execution to continue with the next statement after the loop. The continue statement, on the other hand, exits the loop immediately, but execution continues from the top of the loop. Here’s an example:
var num = 0;
for (var i=1; i < 10; i++) {
if (i % 5 == 0) {
break;
}
num++;
}
alert(num); //4
}
In the previous code, the for loop increments the variable i from 1 to 10. In the body of loop, an if statement checks to see if the value of i is evenly divisible by 5 (using the modulus operator). If so, the break statement is executed and the loop is exited. The num variable starts out at 0 and indicates the number of times the loop has been executed
A different effect can be seen if break is replaced with continue like this:
var num = 0;
for (var i=1; i < 10; i++) {
if (i % 5 == 0) {
continue;
}
num++;
}
alert(num); //8
Here, the alert displays 8, the number of times the loop has been executed. When i reaches a value of 5, the loop is exited before num is incremented, but execution continues with the next iteration, when the value is 6. The loop then continues until its natural completion, when i is 10.
Closely related to the if statement is the switch statement, another flow-control statement adopted from other languages. The syntax for the switch statement in JavaScript closely resembles the syntax in other C-based languages, as you can see here:
switch (expression) {
case value: statement
break;
case value: statement
break;
case value: statement
break;
case value: statement
break;
default: statement
}
In this example, a string value is used in a switch statement. The first case is actually an expression that evaluates a string concatenation. Because the result of this concatenation is equal to the switch argument, the alert displays “Greeting was found.” The ability to have case expressions also allows you to do things like this:
var num = 25;
switch (true) {
case num < 0:
alert(“Less than 0.”);
break;
case num >= 0 && num <= 10:
alert(“Between 0 and 10.”);
break;
case num > 10 && num <= 20:
alert(“Between 10 and 20.”);
break;
default:
alert(“More than 20.”);
}
Functions are the core of any language, because they allow the encapsulation of statements that can be run anywhere and at any time. Functions in JavaScript are declared using the function keyword, followed by a set of arguments and then the body of the function. The basic syntax is as follows:
function functionName(arg0, arg1,...,argN) {
statements
}
This is an example of a function:
function sayHi(name, message) {
alert(“Hello “ + name + “, “ + message);
}
This function can then be called by using the function name, followed by the function arguments enclosed in parentheses (and separated by commas, if there are multiple arguments). The code to call the sayHi() function looks like this:
sayHi(“Nicholas”, “how are you today?”);
The output of this function call is, “Hello Nicholas, how are you today?” The named arguments name and message are used as part of a string concatenation that is ultimately displayed in an alert.
Not only are functions containers for groups of operations, they also create a scope or variables. Variables exist either in the global scope (not declared within a function and available everywhere) or local scope (declared within a function and only available within it). No code outside the function can access a variable declared within it. Only code inside the function can access it. Nested function declarations that are declared at the same level or lower than the variable can also access it. So, for example:
function hi() {
var hello = "hello"
};
hi();
alert(hello);
any function declared within another function automatically has access to variables declared within its parent function:
function fullName() {
var firstName = "Hugo";
function alertFullName() {
var lastName = "Reyes";
alert("Full name: " + firstName + " " + lastName);
}
alertFullName();
}
fullName();
The JavaScript Array global object is a constructor for arrays, which are high-level, list-like objects. Arrays are list-like objects whose prototype has methods to perform traversal and mutation operations. Neither the length of a JavaScript array nor the types of its elements are fixed. Since an array's size length grow or shrink at any time, JavaScript arrays are not guaranteed to be dense. In general, these are convenient characteristics; but if these features are not desirable for your particular use, you might consider using typed arrays.
Creating an array in two ways:
var myArray = new Array();
or
var myArray = [];
The [] notation is called an array literal, and it represents an empty array. It’s less verbose and safer to use than the new Array() syntax, because the Array constructor can be overwritten and potentially replaced with malicious code; for example, a function that masquerades as an array but sends any data you place in it to a third-party server on the Internet. Using the array literal, you can easily create a new array containing values such as the following:
var myArray = [4, 8, 15, 16, 23, 42];
An array isn’t limited to numbers, though. You can also create an array with strings in it:
var fruit = ["apple", "orange", "pear", "grapes"];
Reading from an array is fairly straightforward. All you need to do is point to the item you want by its index number and the array will return it to you, like so:
var myValue,
myArray = ["Hello", "World", "I", "am", "an", "array"];
myValue = myArray[4]; // returns "an"
JavaScript libraries help to bridge the gap between browser differences and provide easier access to complex browser features. Libraries come in two forms: general and specialty. General JavaScript libraries provide access to common browser functionality and can be used as the basis for a web site or web application. Specialty libraries do only specific things and are intended to be used for only parts of a web site or web application.
jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.


1. Introduction
django-redis is a BSD Licensed, full featured Redis cache/session backend for Django.
1.1. Why use django-redis?
Because:
-
In active development.
-
Uses native redis-py url notation connection strings.
-
Modular client system (pluggable clients).
-
Master-Slave support in the default client.
-
Complete battery of tests.
-
Used in production in several projects as cache and session storage.
-
Supports infinite timeouts.
-
Facilities for raw access to Redis client/connection pool.
-
Highly configurable (can emulate memcached exception behavior, for example).
-
Unix sockets supported by default.
-
Pluggable parsers.
-
With support for python 2.7, 3.3 and 3.4
1.2. Supported django-redis versions
-
Development version: 4.0.0
-
Supported stable version: 3.8.4
1.3. How version number is handled
Versions like 3.6, 3.7, … are considered major releases and can contain some backward incompatibilities. For more information is very recommended see the changelog before update.
Versions like 3.7.0, 3.7.1, … are considered minor or bug fix releases and are should contain only bug fixes. No new features.
1.4. Requirements
1.4.1. Django version support
-
django-redis 3.8.x will maintain support for django 1.4, 1.5, 1.6, 1.7 (and maybe 1.8)
-
django-redis 4.0.0 will maintain support for django 1.6, 1.7 and 1.8
1.4.2. Redis Server Support
-
django-redis 3.8.x will maintain support for redis-server 2.6.x and upper.
-
django-redis 4.0.0 will maintain support for redis-server 2.8.x and upper.
1.4.3. Other requirements
All supported versions of django-redis depends on redis-py >= 2.10.0
.
2. User guide
2.1. Installation
The simplest way to use django-redis in your project is to install it with pip:
pip install django-redis
2.2. Configure as cache backend
To start using django-redis, you should change your Django cache settings to something like this:
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "redis://<IP_ADDRESS>:6379/1",
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.DefaultClient",
}
}
}
django-redis, since 3.8.0, it starts using redis-py native url notation for connection strings, that allows better interoperability and have a connection string in more "standard" way.
redis://[:password]@localhost:6379/0 rediss://[:password]@localhost:6379/0 unix://[:password]@/path/to/socket.sock?db=0
Three URL schemes are supported:
-
redis://
: creates a normal TCP socket connection -
rediss://
: creates a SSL wrapped TCP socket connection -
unix://
creates a Unix Domain Socket connection
There are several ways to specify a database number:
-
A
db
querystring option, e.g. redis://localhost?db=0 -
If using the redis:// scheme, the path argument of the url, e.g.
redis://localhost/0
|
Note
|
if you are coming fron django-redis < 3.8.x, you are probably using redis_cache. Since
django-redis 3.8.x, redis_cache module is deprecated in favor to django_redis . The
redis_cache module will be removed in 3.9.x versions.
|
2.3. Configure as session backend
Django can by default use any cache backend as session backend and you benefit from that by using django-redis as backend for session storage without installing any additional backends:
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "default"
3. Advanced usage
3.1. Pickle version
For almost all values, django-redis uses pickle to serialize objects.
The latest available version of pickle is used by default. If you want set a concrete version, you
can do it, using PICKLE_VERSION
option:
CACHES = {
"default": {
# ...
"OPTIONS": {
"PICKLE_VERSION": -1 # Use the latest protocol version
}
}
}
3.2. Socket timeout
Socket timeout can be set using SOCKET_TIMEOUT
and SOCKET_CONNECT_TIMEOUT
options:
CACHES = {
"default": {
# ...
"OPTIONS": {
"SOCKET_CONNECT_TIMEOUT": 5, # in seconds
"SOCKET_TIMEOUT": 5, # in seconds
}
}
}
SOCKET_CONNECT_TIMEOUT
is the timeout for the connection to be established and
SOCKET_TIMEOUT
is the timeout for read and write operations after the connection
is established.
3.3. Compression support
django_redis comes with compression support out of the box, but is deactivated by default. You
can activate it setting COMPRESS_MIN_LEN
option to any value great than 0
.
CACHES = {
"default": {
# ...
"OPTIONS": {
"COMPRESS_MIN_LEN": 10,
}
}
}
zlib is used as default compression format. You can change it providing two callables, one for compress and an other for uncompress.
Let see an example, of how make it work with lzma compression format:
import lzma
CACHES = {
"default": {
# ...
"OPTIONS": {
"COMPRESS_MIN_LEN": 10,
"COMPRESS_COMPRESSOR": lzma.compress,
"COMPRESS_DECOMPRESSOR": lzma.decompress,
"COMPRESS_DECOMPRESSOR_ERROR": lzma.LZMAError
}
}
}
3.4. Memcached exceptions behavior
In some situations, when Redis is only used for cache, you do not want exceptions when Redis is down. This is default behavior in the memcached backend and it can be emulated in django-redis.
For setup memcached like behaviour (ignore connection exceptions), you should
set IGNORE_EXCEPTIONS
settings on your cache configuration:
CACHES = {
"default": {
# ...
"OPTIONS": {
"IGNORE_EXCEPTIONS": True,
}
}
}
Also, you can apply the same settings to all configured caches, you can set the global flag in your settings:
DJANGO_REDIS_IGNORE_EXCEPTIONS = True
3.5. Infinite timeout
django-redis comes with infinite timeouts support out of the box. And it behaves in same way as django backend contract specifies:
-
timeout=0
expires the value inmediatelly. -
timeout=None
infinite timeout
cache.set("key", "value", timeout=None)
3.6. Get ttl (time-to-live) from key
With redis, you can access to ttl of any stored key, for it, django-redis exposes ttl
function.
It returns:
-
ttl value for any volatile key (any key that has expiration)
-
0 for expired and not existent keys
-
None for keys that does not have expiration
>>> from django.core.cache import cache
>>> cache.set("foo", "value", timeout=25)
>>> cache.ttl("foo")
25
>>> cache.ttl("not-existent")
0
3.7. Scan & Delete keys in bulk
django-redis comes with some additional methods that help with searching or deleting keys using glob patterns.
>>> from django.core.cache import cache
>>> cache.keys("foo_*")
["foo_1", "foo_2"]
A simple search like this will return all matched values. In databases with a large number of keys
this isn’t suitable method. Instead, you can use the iter_keys
function that works like the keys
function but uses redis>=2.8 server side cursors. Calling iter_keys
will return a generator that
you can then iterate over efficiently.
>>> from django.core.cache import cache
>>> cache.iter_keys("foo_*")
<generator object algo at 0x7ffa9c2713a8>
>>> next(cache.iter_keys("foo_*"))
"foo_1"
For deleting keys, you should use delete_pattern
which has the same glob pattern syntax
as the keys
function and returns the number of deleted keys.
>>> from django.core.cache import cache
>>> cache.delete_pattern("foo_*")
3.8. Redis native commands
django-redis has limited support for some Redis atomic operations, such as the commands SETNX
and INCR
.
You can use the SETNX
command through the backend set()
method with the nx
parameter:
>>> from django.core.cache import cache
>>> cache.set("key", "value1", nx=True)
True
>>> cache.set("key", "value2", nx=True)
False
>>> cache.get("key")
"value1"
Also, incr
and decr
methods uses redis atomic operations when value that contains a key is suitable
for it.
3.9. Raw client access
In some situations your application requires access to a raw Redis client to use some advanced
features that aren’t exposed by the Django cache interface. To avoid storing another setting for
creating a raw connection, django-redis exposes functions with which you can obtain a raw client
reusing the cache connection string: get_redis_connection(alias)
.
>>> from django_redis import get_redis_connection
>>> con = get_redis_connection("default")
>>> con
<redis.client.StrictRedis object at 0x2dc4510>
|
Warning
|
Not all pluggable clients support this feature. |
3.10. Connection pools
Behind the scenes, django-redis uses the underlying redis-py connection pool implementation, and exposes a simple way to configure it. Alternatively, you can directly customize a connection/connection pool creation for a backend.
The default redis-py behavior is to not close connections, recycling them when possible.
3.10.1. Configure default connection pool
The default connection pool is simple. You can only customize the maximum number of connections
in the pool, by setting CONNECTION_POOL_KWARGS
in the CACHES
setting:
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
...
"OPTIONS": {
"CONNECTION_POOL_KWARGS": {"max_connections": 100}
}
}
}
You can verify how many connections the pool has opened with the following snippet:
from django.core.cache import get_cache
from django_redis import get_redis_connection
r = get_redis_connection("default") # Use the name you have defined for Redis in settings.CACHES
connection_pool = r.connection_pool
print("Created connections so far: %d" % connection_pool._created_connections)
3.10.2. Use your own connection pool subclass
Sometimes you want to use your own subclass of the connection pool. This is possible with
django-redis using the CONNECTION_POOL_CLASS
parameter in the backend options.
from redis.connection import ConnectionPool
class MyOwnPool(ConnectionPool):
# Just doing nothing, only for example purpose
pass
# Omitting all backend declaration boilerplate code.
"OPTIONS": {
"CONNECTION_POOL_CLASS": "myproj.mypool.MyOwnPool",
}
3.10.3. Customize connection factory
If none of the previous methods satisfies you, you can get in the middle of the django-redis connection factory process and customize or completely rewrite it.
By default, django-redis creates connections through the django_redis.pool.ConnectionFactory
class that is specified in the global Django setting DJANGO_REDIS_CONNECTION_FACTORY
.
ConnectionFactory
class# Note: Using Python 3 notation for code documentation ;)
class ConnectionFactory(object):
def get_connection_pool(self, params:dict):
# Given connection parameters in the `params` argument,
# return new connection pool.
# It should be overwritten if you want do something
# before/after creating the connection pool, or return your
# own connection pool.
pass
def get_connection(self, params:dict):
# Given connection parameters in the `params` argument,
# return a new connection.
# It should be overwritten if you want to do something
# before/after creating a new connection.
# The default implementation uses `get_connection_pool`
# to obtain a pool and create a new connection in the
# newly obtained pool.
pass
def get_or_create_connection_pool(self, params:dict):
# This is a high layer on top of `get_connection_pool` for
# implementing a cache of created connection pools.
# It should be overwritten if you want change the default
# behavior.
pass
def make_connection_params(self, url:str) -> dict:
# The responsibility of this method is to convert basic connection
# parameters and other settings to fully connection pool ready
# connection parameters.
pass
def connect(self, url:str):
# This is really a public API and entry point for this
# factory class. This encapsulates the main logic of creating
# the previously mentioned `params` using `make_connection_params`
# and creating a new connection using the `get_connection` method.
pass
3.11. Pluggable parsers
redis-py (the Python Redis client used by django-redis) comes with a pure Python Redis parser that works very well for most common task, but if you want some performance boost, you can use hiredis.
hiredis is a Redis client written in C and it has its own parser that can be used with django-redis.
"OPTIONS": {
"PARSER_CLASS": "redis.connection.HiredisParser",
}
3.12. Pluggable clients
django_redis is designed for to be very flexible and very configurable. For it, it exposes a pluggable backends that make easy extend the default behavior, and it comes with few ones out the box.
3.12.1. Default client
Almost all about the default client is explained, with one exception: the default client comes with master-slave support.
To connect to master-slave redis setup, you should change the LOCATION
to something like this:
"LOCATION": [
"redis://<IP_ADDRESS>:6379/1",
"redis://<IP_ADDRESS>:6378/1",
]
The first connection string represents a master server and the rest to slave servers.
|
Warning
|
Master-Slave setup is not heavily tested in production environments. |
3.12.2. Shard client
This pluggable client implements client-side sharding. It inherits almost all functionality from the default client. To use it, change your cache settings to something like this:
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": [
"redis://<IP_ADDRESS>:6379/1",
"redis://<IP_ADDRESS>:6379/2",
],
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.ShardClient",
}
}
}
|
Warning
|
Shard client is still experimental, so be careful when using it in production environments. |
3.12.3. Herd client
This pluggable client helps dealing with the thundering herd problem. You can read more about it on Wikipedia.
Like previous pluggable clients, it inherits all functionality from the default client, adding some additional methods for getting/setting keys.
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "redis://<IP_ADDRESS>:6379/1",
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.HerdClient",
}
}
}
This client exposes additional settings:
-
CACHE_HERD_TIMEOUT
: Set default herd timeout. (Default value: 60s)
3.13. Pluggable serializer
The pluggable clients serialize data before sending it to the
server. By default, django_redis serialize the data using Python
pickle
. This is very flexible and can handle a large range of object
types.
To serialize using JSON instead, the serializer JSONSerializer
is
also available.
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "redis://<IP_ADDRESS>:6379/1",
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.DefaultClient",
"SERIALIZER": "django_redis.serializers.json.JSONSerializer",
}
}
}
There’s also support for serialization using MsgPack http://msgpack.org/ (that requires the msgpack-python library):
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "redis://<IP_ADDRESS>:6379/1",
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.DefaultClient",
"SERIALIZER": "django_redis.serializers.msgpack.MSGPackSerializer",
}
}
}
4. License
Copyright (c) 2011-2015 Andrey Antukh<EMAIL_ADDRESS>Copyright (c) 2011 Sean Bleier
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.


What's the difference between the margin, border and padding of an HTML element? It's useful to think of an HTML element as a box with a piece of content inside. The outline of the box is also called the border of the element, the distance between the content and the border is the padding, and the distance between the border of the box and the next element's border (or the end of the page) is the margin.
The above image illustrates this concept more fully. TP and BP are the top and bottom padding, TP and TB are the top and bottom border, and so forth. The content in this example is in the middle of the border, implying that the top, right, bottom and left padding values are all the same. However, the content could easily be at the top of the border, the bottom of the border, or even outside the border if you want to get truly wacky (you would do that with negative padding values).
The best way to really learn about how margins, paddings and borders work is to use them yourself. These w3schools tutorials on margins, paddings and borders fully explain each concept in detail and even have links to sample HTML pages where you can input code and immediately see what the result is. Give them a spin!


| Title | Teacher | Date | Location | About |
|---|---|---|---|---|
| Web Development 101 | Wilhelm Breitkreutz | December 2018 | Davis, CA | none |
| R Scripting | Brian Breaker | May 2019 | Little Rock, AR | none |
| Advanced Web Development | Wilhelm Breitkreutz | June 2019 | Denver, CO | View Page |
| Advanced Web Development | Wilhelm Breitkreutz | August 2019 | Hanover, NH | none |
| Advanced Web Development Framework Deep Dive Seminar | Wilhelm Breitkreutz | November 2019 | Kansas City, MO | none |


Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, and the Mediterranean Sea to the south. It comprises the westernmost part of Eurasia. Europe is generally considered as separated from Asia by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways of the Turkish Straits. Yet the non-oceanic boundary between Europe and Asia—a concept dating back to classical antiquity—is arbitrary and amounts to a historical and social construct. The primarily physiographic term "continent" as applied to Europe also incorporates cultural and political elements whose discontinuities are not always reflected by the continent's current overland boundary with Asia.
Europe covers about 10,180,000 square kilometres (3,930,000 sq mi), or 2% of the Earth's surface (6.8% of land area). Politically, Europe is divided into about fifty sovereign states of which the Russian Federation is the largest and most populous, spanning 39% of the continent and comprising 15% of its population. Europe had a total population of about 741 million (about 11% of world population) as of 2016. The European climate is largely affected by warm Atlantic currents that temper winters and summers on much of the continent, even at latitudes along which the climate in Asia and North America is severe. Further from the sea, seasonal differences are more noticeable than close to the coast.


Tributes paid to mother and daughter killed by falling tree
A mother and daughter killed by a falling tree have been described as ‘amazing’.
Elaine Reason, 56, and 16-year-old Grace were both killed on Thursday while driving through the Cotswolds.
In a statement released by Gloucestershire police today, their family said: ‘It is with great sadness that we have lost two amazing family members.
‘Elaine and Grace have been tragically taken away from us far too early.
‘They have touched many hearts and will remain with us and others forever.
‘We are still struggling to come to terms with the tragedy and would ask that our family are given the time and space we need to grieve.’
The mother and daughter were travelling on the B4077 at Stanway Hill, near the town of Winchcombe, when the tree fell just before 10.15pm.
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Rain and high tides had hit the county in the previous couple of days, causing the closure of 10 roads in the area.
A spokesperson for Gloucestershire County Council said: ‘We are shocked and saddened by this awful accident.
‘We send our sincerest condolences to the those connected to the people who were tragically killed.’
Got a story for Metro.co.uk?
Get in touch with our news team by emailing us at<EMAIL_ADDRESS>For more stories like this, check our news page.


Skills: HTML5 CSS3 JavaScript TypeScript Angular
My name is Carles Sánchez and I am a Frontend Web Developer borned in Barcelona. My passion about development is quite new and I'm glad to share with you all my work. Hope you enjoy it!
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.


The Gallery Pafilia Property Sales Offices / Eraclis Papachristou Architects
- Curated by Paula Pintos
- about 21 hours
- version="1.0" encoding="UTF-8"? Architects: Eraclis Papachristou Architects
- AreaArea of this architecture projectArea: 300.0 m2
- version="1.0" encoding="UTF-8"?YearCompletion year of this architecture project Year: 2015
- version="1.0" encoding="UTF-8"?PhotographsPhotographs: Aris Thanasis
- version="1.0" encoding="UTF-8"?ManufacturersBrands with products used in this architecture project Manufacturers: Alucobond, AutoDesk, Chaos Group, Knauf, McNeel, Muskita Aluminium Industries
- Design Team Eraclis Papachristou, Demetris Savva, Timotheos Alexi
- Clients Pafilia Property Developments LTD
- Engineering P.Papadopoulos and Associates Consulting Engineer LLC
- MEP Georghiou & Zembylas Partners
- Quantity Surveyor MNP Chartered Quantity Surveyor
- Acoustic Engineer Ioannides Acoustics
- Interior Architecture Eraclis Papachristou Architects
More Specs Less Specs
Text description provided by the architects. The Gallery is a temporary lightweight structure on a site earmarked for future development. Its smooth geometry, a widening curve culminates in a large glazed front on to the sea, a gesture considered appropriate in trying to promote the positive aspects of the One Tower Project, for which it acts as the sales point. Resting lightly upon the site it is almost entirely constructed of reusable materials.
The pavilion is created through two continuous curvy walls which are joined by glass surfaces. The layout of the two curves organize the interior uses by projecting the main sales lobby to the street and setting back the office spaces. The curvy design is mirrored to the exterior landscape, creating paths, walkways and gardens. Two circular volumes cladded with local wood panels are penetrating the back curvy wall.
This gesture allows both the insertion of two small private conference rooms and the creation of a secondary all-glass entrance. At the same these two wooden volumes act as background walls for the reception and the main lobby. The front curvy glass panels are cladded by customized permeable aluminium sheets, which is used both as a shading device and a light refined façade.
The Gallery, except from a property sales office, works also as a furniture sales office, as mostly interior furniture can be purchased immediately at the site.


|
SlugSat ACS
0.2.0
This repository contains source code for the Attitude Control System (ACS) onboard SlugSat.
|
A library to send and receive data from 42. More...
Go to the source code of this file.
Functions | |
| void | initializeACSSerial (UART_HandleTypeDef *uart) |
| Initializes serial communication from the ACS. More... | |
| void | syncWith42 (ACSType *acs) |
| Handles I/O with 42. Should be called at the beginning of every loop. More... | |
| void | readSensorsFromSerial (ACSType *acs) |
| Reads sensor data from serial and updates acs. More... | |
| void | sendActuatorsToSerial (ACSType *acs) |
| Sends actuator PWMs from acs over serial. More... | |
| void | STM32SerialHandshake (UART_HandleTypeDef *huart) |
| Blocks until completing a handshake with 42. More... | |
| HAL_StatusTypeDef | STM32SerialSendFloats (UART_HandleTypeDef *huart, float *f, unsigned int n) |
| Blocking function to send a set of n floating point numbers over serial. More... | |
| HAL_StatusTypeDef | STM32SerialSendString (UART_HandleTypeDef *huart, char *string) |
| Blocking function to send a string over serial. More... | |
| int | STM32SerialReceiveFloats (UART_HandleTypeDef *huart, float *f, unsigned int n) |
| Blocking function to receive a set of n floating point numbers from serial. More... | |
| void | printTo42 (char *str) |
| Prints str to 42 on the next call of syncWith42() More... | |
A library to send and receive data from 42.
This module handles UART communication with 42 SlugSat (our customized flight simulation).
Created by Galen Savidge. Edited 5/12/2019.
| void initializeACSSerial | ( | UART_HandleTypeDef * | uart | ) |
Initializes serial communication from the ACS.
| uart | pointer to a UART handle defined in main.c |
| void printTo42 | ( | char * | str | ) |
Prints str to 42 on the next call of syncWith42()
| str | null terminated character array to print |
| void readSensorsFromSerial | ( | ACSType * | acs | ) |
Reads sensor data from serial and updates acs.
| acs | a pointer to an existing Attitude Control System object |
| void sendActuatorsToSerial | ( | ACSType * | acs | ) |
Sends actuator PWMs from acs over serial.
| acs | a pointer to an existing Attitude Control System object |
| void STM32SerialHandshake | ( | UART_HandleTypeDef * | huart | ) |
Blocks until completing a handshake with 42.
| huart | pointer to a UART handle made by cubeMX |
| int STM32SerialReceiveFloats | ( | UART_HandleTypeDef * | huart, |
| float * | f, | ||
| unsigned int | n | ||
| ) |
Blocking function to receive a set of n floating point numbers from serial.
| huart | pointer to a UART handle made by cubeMX |
| f | an array of floats of size >= n |
| n | the number of floats to receive |
| HAL_StatusTypeDef STM32SerialSendFloats | ( | UART_HandleTypeDef * | huart, |
| float * | f, | ||
| unsigned int | n | ||
| ) |
Blocking function to send a set of n floating point numbers over serial.
| huart | pointer to a UART handle made by cubeMX |
| f | an array of floats of size >= n |
| n | the number of floats to be sent |
| HAL_StatusTypeDef STM32SerialSendString | ( | UART_HandleTypeDef * | huart, |
| char * | string | ||
| ) |
Blocking function to send a string over serial.
| huart | pointer to a UART handle made by cubeMX |
| string | a null terminated string |


Links
Gmail
Facebook
Twitter
News
Drudge Report
FiveThirtyEight
Fußball
Goal.com
Soccer Power Index
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"Eh, what's up, Doc?"
Colleges
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University of Texas
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GitHub
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Fun
A Google a Day


“hack” in hackerspace is synonymous with verbs like invent, innovate and experiment. A hackerspace is a online community where programmers, coders, developers or anyone with a keen interest in tech can meet, work, share skills and engage in creative problem solving. It is a community-orientated and not-for-profit concept and memberships are free.
How to become a memberCoderDojo is a global volunteer-led community of free programming workshops for young people between 7 and 17. The movement is a grassroots organisation with individual clubs acting independently.
The Chaos Computer Club is Europe's largest association of hackers with 7700 registered members. It is incorporated as an eingetragener Verein in Germany, with local chapters in various cities in Germany and other German-speaking countries.
You can use this design as is, or you can make changes!
Is it really open source if it's not made with love?


Preheat oven to 325°F.
Whisk yolks and 6 tablespoons sugar in medium bowl to blend. Scrape in seeds from vanilla bean. Gradually whisk the cream into the sugar. Divide mixture among 6 - 3/4 cup custard cups or ramekins. Arrange dishes in 13x9x2-inch baking pan. Pour enough hot water into pan to come halfway up sides of dishes.
Bake custards approximately 35-40 minutes until the custard is set. Do not overbake or your custard will be rubbery. Remove the pan from the oven and remove custard cups from the water. Allow custards to cool before placing in the refrigerator. Chill overnight.
Two hours before serving: Preheat broiler. Sprinkle 1 teaspoon sugar atop each custard. Place dishes on small baking sheet. Broil until sugar just starts to caramelize, rotating sheet for even browning, about 2 minutes. Chill until caramelized sugar hardens, about 2 hours.


body container
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I just added these to my collection, and feel like I should mention them to @joec :: Trioscapes and Nova Collective. Both are side projects of the bass player from Between the Buried and Me.


Sublime Text Notes¶
Table of contents
Introduction¶
This page contains notes on how to use Sublime Text with Drake.
User Preferences¶
To change your custom user preferences, go to “Sublime Text”, “Preferences”, “Settings - User.” Then add the following:
Full File Path Display¶
Note that this only needs to be done on macOS since the full path appears by default on Linux machines.
To display the current file’s full path in the title bar on macOS:
"show_full_path": true,
Show *.sdf Files in Side Bar¶
To show *.sdf
files in the side bar:
"file_exclude_patterns":
[
"*.pyc",
"*.pyo",
"*.exe",
"*.dll",
"*.obj",
"*.o",
"*.a",
"*.lib",
"*.so",
"*.dylib",
"*.ncb",
"*.suo",
"*.pdb",
"*.idb",
".DS_Store",
"*.class",
"*.psd",
"*.db",
"*.sublime-workspace"
],
Note that the above list does not include *.sdf
. This is expected since by
default *.sdf
does show up in the list.
Automatically Show an 80-character Ruler¶
To view an 80 character-wide ruler:
"rulers": [80],
Always displaying a ruler is useful to conform to Drake’s coding style.


Guide to D&D Races
Home
Races
Classes
Spells
Purchase Dice
Information about spells will be on this page


My Favorite Things
puppies
shih tzus
goldens
food
cheese
omlettes
hummus plate
alcohol
vodka
dah wine
clear rum


{% extends "email/email_base.html" %} {% block content %}
On {{ invoice.created | date:"SHORT_DATE_FORMAT"}} your card was charged ${{ invoice.display_amount }} for the following ContactOtter plans:
{% for name, amount in invoice.plan_tuples %}{{ name }}: ${{ amount }}
{% endfor %}--------
Total: ${{ invoice.display_amount }}
Thanks for your payment! You're helping make ContactOtter possible.
If you have any questions, please email<EMAIL_ADDRESS>{% endblock %}


This is HTML forms tutorial
Name
Role:
Email:
Date:
Bonus:
Are you eligible ?
Gender : Male
Female
Write about yourself :
Car
Indica
Swift
WagonR


|
Ocular Engine
|
#include <Euler.hpp>
Public Member Functions | |
| Euler (float const pPitch, float const pYaw, float const pRoll) | |
| Euler (Vector3< float > const &vector) | |
| Euler (Matrix3x3 const &rotationMatrix) | |
| Euler (Quaternion const &quaternion) | |
| float | getYaw () const |
| float | getYawRadians () const |
| float | getPitch () const |
| float | getPitchRadians () const |
| float | getRoll () const |
| float | getRollRadians () const |
| void | setYaw (float const yaw) |
| void | setYawRadians (float const yaw) |
| void | setPitch (float const pitch) |
| void | setPitchRadians (float const pitch) |
| void | setRoll (float const roll) |
| void | setRollRadians (float const roll) |
| Matrix3x3 | toRotationMatrix () const |
| Quaternion | toQuaternion () const |
| void | normalize () |
| Euler | getNormalized () const |
| void | denormalize () |
| Euler | getDenormalized () const |
Static Public Member Functions | |
| static float | normalizeAxis (float const &angle) |
| static float | denormalizeAxis (float const &angle) |
Friends | |
| class | Matrix3x3 |
| class | Quaternion |
Implementation of Euler (Tait-Bryan) angles - yaw, pitch, roll. In NASA Standard Aeroplace notation, these correspond to heading, altitude, and bearing respectively.
All input and output from the Euler class is in degrees, but internally the components are stored as radians.
| Ocular::Math::Euler::Euler | ( | float const | pPitch, |
| float const | pYaw, | ||
| float const | pRoll | ||
| ) |
| [in] | pPitch | Rotation (in degrees) around the local x-axis |
| [in] | pYaw | Rotation (in degrees) around the local y-axis |
| [in] | pRoll | Rotation (in degrees) around the local z-axis |
| Ocular::Math::Euler::Euler | ( | Vector3< float > const & | vector | ) |
| [in] | vector | Vector expected in form of (Pitch, Yaw, Roll) or (X-Rotation, Y-Rotation, Z-Rotation) |
| Ocular::Math::Euler::Euler | ( | Matrix3x3 const & | rotationMatrix | ) |
Initializes the Euler angles from a rotation matrix.
| [in] | rotationMatrix |
| Ocular::Math::Euler::Euler | ( | Quaternion const & | quaternion | ) |
Initializes the Euler angles from a quaternion.
| [in] | quaternion |
| void Ocular::Math::Euler::denormalize | ( | ) |
|
static |
| [in] | angle |
| float Ocular::Math::Euler::getPitch | ( | ) | const |
| float Ocular::Math::Euler::getPitchRadians | ( | ) | const |
| float Ocular::Math::Euler::getRoll | ( | ) | const |
| float Ocular::Math::Euler::getRollRadians | ( | ) | const |
| float Ocular::Math::Euler::getYaw | ( | ) | const |
| float Ocular::Math::Euler::getYawRadians | ( | ) | const |
| void Ocular::Math::Euler::normalize | ( | ) |
|
static |
| [in] | angle |
| void Ocular::Math::Euler::setPitch | ( | float const | pitch | ) |
Directly sets the pitch of this Euler angles. This method should only be used if you know exactly what you are doing.
| [in] | pitch | The Pitch in degrees. |
| void Ocular::Math::Euler::setPitchRadians | ( | float const | pitch | ) |
| [in] | pitch | The Pitch in radians. |
| void Ocular::Math::Euler::setRoll | ( | float const | roll | ) |
Directly sets the roll of this Euler angles. This method should only be used if you know exactly what you are doing.
| [in] | roll | The Roll in degrees. |
| void Ocular::Math::Euler::setRollRadians | ( | float const | roll | ) |
| [in] | roll | The Roll in radians. |
| void Ocular::Math::Euler::setYaw | ( | float const | yaw | ) |
Directly sets the yaw of this Euler angles. This method should only be used if you know exactly what you are doing.
| [in] | yaw | The Yaw in degrees. |
| void Ocular::Math::Euler::setYawRadians | ( | float const | yaw | ) |
| [in] | yaw | The Yaw in radians. |
| Quaternion Ocular::Math::Euler::toQuaternion | ( | ) | const |
Converts this Euler angle representation of a rotation to a Quaternion.
| Matrix3x3 Ocular::Math::Euler::toRotationMatrix | ( | ) | const |
Converts this Euler angle representation of a rotation to a 3x3 rotation matrix.


Start
Guess
You've lost your wallet, play this game to find it!
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You've lost your wallet, play this game to find it!
Continue


All Classes
ConversionManager
ConversionRule
ConversionRule.ConvertDirection
ConversionRule.FilterMode
Converter
Flux
FluxCompatible
FluxConductor
FluxContainer
FluxEmitter
FluxGroup
FluxReceiver
FluxType
Network
NetworkBase
NetworkComponent
Pair
Property
PropertyManager
StructureComponent
StructureCore
StructureDelegate


|
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| PREV NEXT | FRAMES NO FRAMES |
| com.garmin.* |
|---|
| com.garmin.fit.BatteryStatus | ||
|---|---|---|
public static final short |
CRITICAL |
5 |
public static final short |
GOOD |
2 |
public static final short |
LOW |
4 |
public static final short |
NEW |
1 |
public static final short |
OK |
3 |
| com.garmin.fit.Checksum | ||
|---|---|---|
public static final short |
CLEAR |
0 |
public static final short |
OK |
1 |
| com.garmin.fit.CourseCapabilities | ||
|---|---|---|
public static final long |
CADENCE |
128L |
public static final long |
DISTANCE |
8L |
public static final long |
HEART_RATE |
32L |
public static final long |
NAVIGATION |
512L |
public static final long |
POSITION |
16L |
public static final long |
POWER |
64L |
public static final long |
PROCESSED |
1L |
public static final long |
TIME |
4L |
public static final long |
TRAINING |
256L |
public static final long |
VALID |
2L |
| com.garmin.fit.DateTime | ||
|---|---|---|
public static final long |
MIN |
268435456L |
public static final long |
OFFSET |
631065600000L |
| com.garmin.fit.DeviceIndex | ||
|---|---|---|
public static final short |
CREATOR |
0 |
| com.garmin.fit.DeviceType | ||
|---|---|---|
public static final short |
ANTFS |
1 |
public static final short |
BIKE_CADENCE |
122 |
public static final short |
BIKE_POWER |
11 |
public static final short |
BIKE_SPEED |
123 |
public static final short |
BIKE_SPEED_CADENCE |
121 |
public static final short |
BLOOD_PRESSURE |
18 |
public static final short |
CONTROL |
16 |
public static final short |
ENV_SENSOR |
25 |
public static final short |
ENVIRONMENT_SENSOR_LEGACY |
12 |
public static final short |
FITNESS_EQUIPMENT |
17 |
public static final short |
GEOCACHE_NODE |
19 |
public static final short |
HEART_RATE |
120 |
public static final short |
LIGHT_ELECTRIC_VEHICLE |
20 |
public static final short |
MULTI_SPORT_SPEED_DISTANCE |
15 |
public static final short |
RACQUET |
26 |
public static final short |
STRIDE_SPEED_DISTANCE |
124 |
public static final short |
WEIGHT_SCALE |
119 |
| com.garmin.fit.FileFlags | ||
|---|---|---|
public static final short |
ERASE |
8 |
public static final short |
READ |
2 |
public static final short |
WRITE |
4 |
| com.garmin.fit.Fit | ||
|---|---|---|
public static final int |
ANTFS_FILE_DATA_TYPE |
128 |
public static final int |
ARCH_ENDIAN_BIG |
1 |
public static final int |
ARCH_ENDIAN_LITTLE |
0 |
public static final int |
ARCH_ENDIAN_MASK |
1 |
public static final int |
BASE_TYPE_BYTE |
13 |
public static final int |
BASE_TYPE_ENDIAN_FLAG |
128 |
public static final int |
BASE_TYPE_ENUM |
0 |
public static final int |
BASE_TYPE_FLOAT32 |
136 |
public static final int |
BASE_TYPE_FLOAT64 |
137 |
public static final int |
BASE_TYPE_NUM_MASK |
31 |
public static final int |
BASE_TYPE_RESERVED |
96 |
public static final int |
BASE_TYPE_SINT16 |
131 |
public static final int |
BASE_TYPE_SINT32 |
133 |
public static final int |
BASE_TYPE_SINT8 |
1 |
public static final int |
BASE_TYPE_STRING |
7 |
public static final int |
BASE_TYPE_UINT16 |
132 |
public static final int |
BASE_TYPE_UINT16Z |
139 |
public static final int |
BASE_TYPE_UINT32 |
134 |
public static final int |
BASE_TYPE_UINT32Z |
140 |
public static final int |
BASE_TYPE_UINT8 |
2 |
public static final int |
BASE_TYPE_UINT8Z |
10 |
public static final int |
BASE_TYPES |
14 |
public static final int |
FIELD_NUM_INVALID |
255 |
public static final int |
FIELD_NUM_MESSAGE_INDEX |
254 |
public static final int |
FIELD_NUM_TIMESTAMP |
253 |
public static final int |
FILE_HDR_SIZE |
14 |
public static final int |
HDR_SIZE |
1 |
public static final int |
HDR_TIME_OFFSET_MASK |
31 |
public static final int |
HDR_TIME_REC_BIT |
128 |
public static final int |
HDR_TIME_TYPE_MASK |
96 |
public static final int |
HDR_TIME_TYPE_SHIFT |
5 |
public static final int |
HDR_TYPE_DEF_BIT |
64 |
public static final int |
HDR_TYPE_MASK |
15 |
public static final int |
MAX_FIELD_SIZE |
255 |
public static final int |
MAX_LOCAL_MESGS |
16 |
public static final int |
MAX_MESG_SIZE |
255 |
public static final int |
PROFILE_VERSION |
820 |
public static final int |
PROFILE_VERSION_MAJOR |
8 |
public static final int |
PROFILE_VERSION_MINOR |
20 |
public static final int |
PROFILE_VERSION_SCALE |
100 |
public static final int |
PROTOCOL_VERSION |
16 |
public static final int |
PROTOCOL_VERSION_MAJOR |
1 |
public static final int |
PROTOCOL_VERSION_MAJOR_MASK |
240 |
public static final int |
PROTOCOL_VERSION_MAJOR_SHIFT |
4 |
public static final int |
PROTOCOL_VERSION_MINOR |
0 |
public static final int |
PROTOCOL_VERSION_MINOR_MASK |
15 |
public static final int |
SUBFIELD_INDEX_ACTIVE_SUBFIELD |
65534 |
public static final int |
SUBFIELD_INDEX_MAIN_FIELD |
65535 |
| com.garmin.fit.GarminProduct | ||
|---|---|---|
public static final int |
ALF04 |
1341 |
public static final int |
AMX |
1461 |
public static final int |
ANDROID_ANTPLUS_PLUGIN |
65532 |
public static final int |
AXB01 |
3 |
public static final int |
AXB02 |
4 |
public static final int |
AXH01 |
2 |
public static final int |
CHIRP |
1253 |
public static final int |
CONNECT |
65534 |
public static final int |
DSI_ALF01 |
1011 |
public static final int |
DSI_ALF02 |
6 |
public static final int |
EDGE_TOURING |
1736 |
public static final int |
EDGE200 |
1325 |
public static final int |
EDGE500 |
1036 |
public static final int |
EDGE510 |
1561 |
public static final int |
EDGE800 |
1169 |
public static final int |
EDGE810 |
1567 |
public static final int |
FENIX |
1551 |
public static final int |
FR10 |
1482 |
public static final int |
FR110 |
1124 |
public static final int |
FR310XT |
1018 |
public static final int |
FR310XT_4T |
1446 |
public static final int |
FR405 |
717 |
public static final int |
FR50 |
782 |
public static final int |
FR60 |
988 |
public static final int |
FR610 |
1345 |
public static final int |
FR70 |
1436 |
public static final int |
FR910XT |
1328 |
public static final int |
HRM_RUN |
1752 |
public static final int |
HRM_RUN_SINGLE_BYTE_PRODUCT_ID |
8 |
public static final int |
HRM1 |
1 |
public static final int |
HRM2SS |
5 |
public static final int |
SDM4 |
10007 |
public static final int |
SWIM |
1499 |
public static final int |
TEMPE |
1570 |
public static final int |
TRAINING_CENTER |
20119 |
public static final int |
VIRB_ELITE |
1735 |
| com.garmin.fit.LeftRightBalance | ||
|---|---|---|
public static final short |
MASK |
127 |
public static final short |
RIGHT |
128 |
| com.garmin.fit.LeftRightBalance100 | ||
|---|---|---|
public static final int |
MASK |
16383 |
public static final int |
RIGHT |
32768 |
| com.garmin.fit.Manufacturer | ||
|---|---|---|
public static final int |
_4IIIIS |
51 |
public static final int |
A_AND_D |
21 |
public static final int |
ACE_SENSOR |
43 |
public static final int |
ACTIGRAPHCORP |
5759 |
public static final int |
ALATECH_TECHNOLOGY_LTD |
58 |
public static final int |
ARCHINOETICS |
34 |
public static final int |
BEURER |
19 |
public static final int |
BF1SYSTEMS |
47 |
public static final int |
BKOOL |
67 |
public static final int |
BREAKAWAY |
57 |
public static final int |
BRIM_BROTHERS |
44 |
public static final int |
CARDIOSPORT |
20 |
public static final int |
CATEYE |
68 |
public static final int |
CITIZEN_SYSTEMS |
36 |
public static final int |
CLEAN_MOBILE |
26 |
public static final int |
CONCEPT2 |
40 |
public static final int |
DAYTON |
4 |
public static final int |
DEVELOPMENT |
255 |
public static final int |
DEXCOM |
31 |
public static final int |
DYNASTREAM |
15 |
public static final int |
DYNASTREAM_OEM |
13 |
public static final int |
ECHOWELL |
12 |
public static final int |
GARMIN |
1 |
public static final int |
GARMIN_FR405_ANTFS |
2 |
public static final int |
GEONAUTE |
61 |
public static final int |
GPULSE |
25 |
public static final int |
HMM |
22 |
public static final int |
HOLUX |
39 |
public static final int |
IBIKE |
8 |
public static final int |
ID_BIKE |
62 |
public static final int |
IDT |
5 |
public static final int |
IFOR_POWELL |
54 |
public static final int |
LEMOND_FITNESS |
30 |
public static final int |
MAGELLAN |
37 |
public static final int |
MAXWELL_GUIDER |
55 |
public static final int |
METALOGICS |
50 |
public static final int |
METRIGEAR |
17 |
public static final int |
MIO_TECHNOLOGY_EUROPE |
59 |
public static final int |
MOXY |
76 |
public static final int |
NAUTILUS |
14 |
public static final int |
NORTH_POLE_ENGINEERING |
66 |
public static final int |
OCTANE_FITNESS |
33 |
public static final int |
ONE_GIANT_LEAP |
42 |
public static final int |
OSYNCE |
38 |
public static final int |
PEAKSWARE |
28 |
public static final int |
PEDAL_BRAIN |
27 |
public static final int |
PERCEPTION_DIGITAL |
46 |
public static final int |
PERIPEDAL |
72 |
public static final int |
PHYSICAL_ENTERPRISES |
65 |
public static final int |
PIONEER |
48 |
public static final int |
QUARQ |
7 |
public static final int |
ROTOR |
60 |
public static final int |
SARIS |
9 |
public static final int |
SAXONAR |
29 |
public static final int |
SEIKO_EPSON |
52 |
public static final int |
SEIKO_EPSON_OEM |
53 |
public static final int |
SIGMASPORT |
70 |
public static final int |
SPANTEC |
49 |
public static final int |
SPARK_HK |
10 |
public static final int |
SPECIALIZED |
63 |
public static final int |
SRM |
6 |
public static final int |
STAGES_CYCLING |
69 |
public static final int |
STAR_TRAC |
56 |
public static final int |
SUUNTO |
23 |
public static final int |
TANITA |
11 |
public static final int |
THE_HURT_BOX |
35 |
public static final int |
THITA_ELEKTRONIK |
24 |
public static final int |
TIMEX |
16 |
public static final int |
TOMTOM |
71 |
public static final int |
WAHOO_FITNESS |
32 |
public static final int |
WTEK |
64 |
public static final int |
XELIC |
18 |
public static final int |
XPLOVA |
45 |
public static final int |
ZEPHYR |
3 |
| com.garmin.fit.MesgNum | ||
|---|---|---|
public static final int |
ACTIVITY |
34 |
public static final int |
BIKE_PROFILE |
6 |
public static final int |
BLOOD_PRESSURE |
51 |
public static final int |
CADENCE_ZONE |
131 |
public static final int |
CAPABILITIES |
1 |
public static final int |
COURSE |
31 |
public static final int |
COURSE_POINT |
32 |
public static final int |
DEVICE_INFO |
23 |
public static final int |
DEVICE_SETTINGS |
2 |
public static final int |
EVENT |
21 |
public static final int |
FIELD_CAPABILITIES |
39 |
public static final int |
FILE_CAPABILITIES |
37 |
public static final int |
FILE_CREATOR |
49 |
public static final int |
FILE_ID |
0 |
public static final int |
GOAL |
15 |
public static final int |
HR_ZONE |
8 |
public static final int |
HRM_PROFILE |
4 |
public static final int |
HRV |
78 |
public static final int |
LAP |
19 |
public static final int |
LENGTH |
101 |
public static final int |
MESG_CAPABILITIES |
38 |
public static final int |
MET_ZONE |
10 |
public static final int |
MFG_RANGE_MAX |
65534 |
public static final int |
MFG_RANGE_MIN |
65280 |
public static final int |
MONITORING |
55 |
public static final int |
MONITORING_INFO |
103 |
public static final int |
PAD |
105 |
public static final int |
POWER_ZONE |
9 |
public static final int |
RECORD |
20 |
public static final int |
SCHEDULE |
28 |
public static final int |
SDM_PROFILE |
5 |
public static final int |
SESSION |
18 |
public static final int |
SLAVE_DEVICE |
106 |
public static final int |
SOFTWARE |
35 |
public static final int |
SPEED_ZONE |
53 |
public static final int |
SPORT |
12 |
public static final int |
TOTALS |
33 |
public static final int |
USER_PROFILE |
3 |
public static final int |
WEIGHT_SCALE |
30 |
public static final int |
WORKOUT |
26 |
public static final int |
WORKOUT_STEP |
27 |
public static final int |
ZONES_TARGET |
7 |
| com.garmin.fit.MessageIndex | ||
|---|---|---|
public static final int |
MASK |
4095 |
public static final int |
RESERVED |
28672 |
public static final int |
SELECTED |
32768 |
| com.garmin.fit.SportBits0 | ||
|---|---|---|
public static final short |
BASKETBALL |
64 |
public static final short |
CYCLING |
4 |
public static final short |
FITNESS_EQUIPMENT |
16 |
public static final short |
GENERIC |
1 |
public static final short |
RUNNING |
2 |
public static final short |
SOCCER |
128 |
public static final short |
SWIMMING |
32 |
public static final short |
TRANSITION |
8 |
| com.garmin.fit.SportBits1 | ||
|---|---|---|
public static final short |
AMERICAN_FOOTBALL |
2 |
public static final short |
TENNIS |
1 |
public static final short |
TRAINING |
4 |
| com.garmin.fit.UserLocalId | ||
|---|---|---|
public static final int |
LOCAL_MAX |
15 |
public static final int |
LOCAL_MIN |
1 |
public static final int |
PORTABLE_MAX |
65534 |
public static final int |
PORTABLE_MIN |
256 |
public static final int |
STATIONARY_MAX |
255 |
public static final int |
STATIONARY_MIN |
16 |
| com.garmin.fit.Weight | ||
|---|---|---|
public static final int |
CALCULATING |
65534 |
| com.garmin.fit.WorkoutCapabilities | ||
|---|---|---|
public static final long |
CADENCE |
1024L |
public static final long |
CUSTOM |
2L |
public static final long |
DISTANCE |
512L |
public static final long |
FIRSTBEAT |
8L |
public static final long |
FITNESS_EQUIPMENT |
4L |
public static final long |
GRADE |
4096L |
public static final long |
HEART_RATE |
256L |
public static final long |
INTERVAL |
1L |
public static final long |
NEW_LEAF |
16L |
public static final long |
POWER |
2048L |
public static final long |
PROTECTED |
16384L |
public static final long |
RESISTANCE |
8192L |
public static final long |
SPEED |
128L |
public static final long |
TCX |
32L |
| com.garmin.fit.WorkoutHr | ||
|---|---|---|
public static final long |
BPM_OFFSET |
100L |
| com.garmin.fit.WorkoutPower | ||
|---|---|---|
public static final long |
WATTS_OFFSET |
1000L |
|
|||||||||
| PREV NEXT | FRAMES NO FRAMES |


Nyzo version 568 (commit on GitHub) adds the CoinsInCirculationCommand to the client.
This version affects the client only.
In LockedAccountManager, the new accountIsLocked() method allows direct querying of whether an account is subject to locking. Previously, only transactions could be queried, using the isSubjectToLock() method.
In the Client initialization process, the new CommandManager.checkCommandStrings() method is called. This method does nothing more than print messages if duplicate command strings are used among multiple commands.
In CommandEndpointApi.getResponse(), use of the ExecutionResult.toJson() method has been replaced with the new ExecutionResult.toEndpointResponse() method. This allows ExecutionResult objects to return types other than JSON.
In CommandEndpointWeb.getResponse(), presentation and processing of the form is now bypassed for commands with no arguments.
In CommandManager, the new CoinsInCirculationCommand was added to the list of commands. The checkCommandStrings() method, as noted above, prints messages when duplicate command names are found. This method is intended to prevent developers from inadvertently adding a new command whose command strings collide with those of an existing command.
In the ExecutionResult interface, the toJson() method was replaced with toEndpointResponse(). This allows an ExecutionResult to return API responses of any type, including binary and plain text.
In SimpleExecutionResult, implementation of toJson() was modified to become toEndpointResponse() to satisfy the new requirement of ExecutionResult.
The new CoinsInCirculationCommand implements the required methods for the Command interface. This command takes no arguments, and it requires neither validation nor confirmation. It is not long-running.
CoinsInCirculationCommand.run() begins by creating the structure for its output. A CommandTable stores the calculation of coins in circulation along with a number of values used in the calculation.
The frozen-edge balance list is used to calculate circulation. The sum of locked accounts is calculated, and balances of other accounts not in circulation are retrieved. The total circulation is calculated by subtracting total locked amounts from the total number of coins in the system. An additive calculation of all unlocked amounts would produce the same result.
The result table is assembled, and the result is produced. Instead of using the default JSON API response provided by SimpleExecutionResult, the toEndpointResponse() method is overridden to produce a plain-text response with just the circulation value.
In EndpointResponse, a content type was added for plain text.
The web form of this command, http://client.nyzo.co/circulation, displays a table.
The API form of this command, http://client.nyzo.co/api/circulation, returns a plain-text value. This should allow for easy implementation for anyone who wants to track Nyzo circulation.