--- layout: post title: "Node.js + express routes + mongoose, simple and separated" date: 2014-07-23 23:45:40 categories: coding --- There are plenty of examples out there explaining how to develop a webserver in node.js using the express framework. There are also great books like Professional Node.js and Smashing Node.js introducing details about express among many other topics. But there is also, imho, a big problem: all of them show different ways to solve the same problem. In addition to that there were changes in the framework (Express has recently changed to version 4) and some documentation and samples could be deprecated, so if you are trying to learn anything that involves JS don't forget to check publication dates, even for this post!! I'll show how to develop a very simple guestbook from scratch, trying to apply the KISS principle: Keep It Simple Stupid! simple and clear, and trying to put every piece of code in its proper place (routes, models, views, etc...) Bad news: the express.js official page doesn't show how to do this. the good news, if you install express-generator (a must) you get a system command called express which will create project templates. So, let's start in a sort of "official" way. Without options we'll get a project using jade as a template engine and plain css.
express simple-express-mongooseThis creates a directory with that name and an app.js with this content:
var express = require('express'); var path = require('path'); var favicon = require('static-favicon'); var logger = require('morgan'); var cookieParser = require('cookie-parser'); var bodyParser = require('body-parser'); var routes = require('./routes/index'); var users = require('./routes/users'); var app = express(); // view engine setup app.set('views', path.join(__dirname, 'views')); app.set('view engine', 'jade'); app.use(favicon()); app.use(logger('dev')); app.use(bodyParser.json()); app.use(bodyParser.urlencoded()); app.use(cookieParser()); app.use(express.static(path.join(__dirname, 'public'))); app.use('/', routes); app.use('/users', users); /// catch 404 and forward to error handler app.use(function(req, res, next) { var err = new Error('Not Found'); err.status = 404; next(err); }); /// error handlers // development error handler // will print stacktrace if (app.get('env') === 'development') { app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: err }); }); } // production error handler // no stacktraces leaked to user app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: {} }); }); module.exports = app;
Let's simplify to leave only the routes:
var express = require('express'); var index = require('./routes'); var guestbook = require('./routes/guestbook'); var app = express(); app.use(express.static('public')); app.use('/', index); app.use('/guestbook', guestbook); app.listen(3000, function () { console.log('Listening on port 3000'); })
Applications tend to grow and so we would have to require every route in the main entrypoint for express. Instead of that we can require just the routes/index.js
exports.home = require('./home'); exports.guestbook = require('./guestbook');
Now app.js has simplified route requires
var express = require('express'); var routes = require('./routes'); // This will require 'routes/index.js' !! var app = express(); app.use(express.static('public')); app.use('/', routes.home); app.use('/guestbook', routes.guestbook); app.listen(3000, function () { console.log('Listening on port 3000'); })
I've seen samples where all routes are added to express with just one line of code, but it wasn't working here for me.
Ok, now we want to show guestbook messages from a MongoDB database. As we are using mongoose, we must define a schema for each collection, and so we'll create a guestbook.js file in a models folder. Here we could try the same procedure used for routes. We create a models/index.js
file which connects to MongoDB and exports all mongoose schemas. Here is models/index.js
/** * models/index.js * All models are here to import all of them just with one command * in the main app.js, and by the way we connect to MongoDB * Better to use an external config.. I know. * https://github.com/pello-io/simple-express-mongoose * Pello Altadill - http://pello.info */ var mongoose = require('mongoose'); mongoose.connect('mongodb://localhost/blog'); // optionally: //mongoose.set('debug', true); exports.GuestBook = require('./guestbook');
And this is the schema definition for the guestbook collection, mongoose style. MongoDB is a schemaless database but this driver forces you to define a schema.
Routes are separated, one file for the home request, other file for guestbook requests, and so forth as the app grows. home.js is pretty straightforward: when we receive a get request, just render the index.jade
And this is the route for guestbook.js, with the get and the post. post saves data and then redirects to get case.
Here you have. There are more modules to load to improve this sample app, but at least routes and models now are kept apart.
You can clone, download(at this point of development), copy-paste this project from git>. Don't forget to get the required node modules to make it work!


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Features
Now the fastest JavaScript CSV parser for the browser
The world's first multi-threaded CSV parser for the browser
Papa can handle files gigabytes in size without crashing
Use Papa when performance, privacy, and correctness matter to you
Papa alleviates privacy concerns related to uploading files
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People Papa
SmartyStreets verifies addresses, many of which are in CSV files. Papa Parse can process huge files in the browser. "We rapidly built an awesome client-side file processor with Papa Parse."
 "Papa Parse made it very easy to load and ready user CSV files in the browser on the client side."
EpiML is an agent-based mathematical model for the web, still in its early stages of development. "Papa makes it so easy to use CSV, which is good for scientists."
CSV Parsing
"Isn't parsing CSV just String.split(',')
?"
Heavens, no. Papa does it right. Just pass in the CSV string with an optional configuration.
var results = Papa.parse(csvString, config);
/*
results = {
data: [ ... ], // parsed data
errors: [ ... ], // errors encountered
meta: { ... } // extra parse info
}
*/
Delimiter Detection
"But I don't know the delimiter..."
That's okay. Papa will scan the first few rows to find the right delimiter.
var results = Papa.parse(csvString);
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// "\t"
Local Files
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Papa.parse(fileInput.files[0], {
complete: function(results) {
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});
Remote Files
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});
Multi-Threading
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That happens when a long-running script is executing in the same thread as the page. Use a Worker thread by specifying worker: true
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Papa.parse(bigFile, {
worker: true,
step: function(row) {
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},
complete: function() {
console.log("All done!");
}
});
Header Row
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If you tell Papa there is a header row, each row will be organized by field name instead of index.
// Key data by field name instead of index/position
var results = Papa.parse(csv, {
header: true
});
Type Conversion
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Everything is parsed as strings. If you want numbers and booleans, you can enable dynamic typing to do the conversion for you.
// Converts numeric/boolean data
var results = Papa.parse(csv, {
dynamicTyping: true
});
Error Handling
"Aw, shoot. Errors."
Papa handles errors pretty well. The CSV standard is somewhat loose ambiguous, so Papa is designed for edge cases. For example, mismatched fields won't break parsing.
// Example error:
{
type: "FieldMismatch",
code: "TooManyFields",
message: "Expected 3 fields, but parsed 4",
row: 1
}
jQuery Plugin
"Can I use Papa with jQuery?"
Sure, but it's not required. You can use jQuery to select file input elements and then parse their files. Papa exposes its file parsing API as a jQuery plugin only when jQuery is defined. Papa Parse has no dependencies.
$("input[type=file]").parse({
config: {
complete: function(results, file) {
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JSON to CSV
"Last thing: what about converting JSON to CSV?"
Call unparse()
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var csv = Papa.unparse(yourData);
Comments
"I forgot to mention: my CSV files have comments in them."
Okay, first off: that's really weird. But fortunately, you can skip those lines... just specify the comment string.


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Why do we use it? It is a long established fact that a reader will be distracted by the reooking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English.
Why do we use it? It is a long established fact that a reader will be distracted by the reooking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English.


Source code for samplics.utils.checks
"""Runs checks on the data to help capture some errors faster and provides better error messages.
Functions:
| *assert_probabilities()* ensures that probability values are between 0 and 1.
| *assert_weights()* ensures that sample weights are not negatives.
| *assert_not_unique()* return an assertion error if the array has non unique values.
| *assert_response_status()* checks that the response values are in ("in", "rr", "nr", "uk").
| *assert_brr_number_psus()* checks that the number of psus is a multiple of 2.
"""
from __future__ import annotations
from typing import Any, Optional
import numpy as np
import pandas as pd
from samplics.utils import formats
from samplics.utils.types import Array, StringNumber
[docs]def assert_probabilities(probs: Array) -> None:
err_msg = "Probabilities must be between 0 and 1, inclusively!"
if isinstance(probs, (int, float)):
if probs > 1 or probs < 0:
raise ValueError(err_msg)
elif isinstance(probs, (np.ndarray, pd.Series)):
if probs.any() > 1 or probs.any() < 0:
raise ValueError(err_msg)
[docs]def assert_weights(weights: Array) -> None:
weights = formats.numpy_array(weights)
if weights.any() < 0:
raise ValueError("Sample weights must be positive values")
[docs]def assert_not_unique(array_unique_values: Array) -> None:
if np.unique(array_unique_values).size != len(array_unique_values):
raise AssertionError(
"array_unique_values must contains unique values identifying all the units in the sampling frame."
)
[docs]def assert_response_status(
response_status: Any, response_dict: Optional[dict[str, StringNumber]]
) -> None:
if response_status is None:
raise AssertionError("response_status is not provided")
elif not np.isin(response_status, ("in", "rr", "nr", "uk")).all() and response_dict is None:
raise AssertionError(
"The response status must only contains values in ('in', 'rr', 'nr', 'uk') or the mapping should be provided using response_dict parameter"
)
elif isinstance(response_dict, dict):
resp_keys = np.array(list(response_dict.keys()))
if not np.isin(resp_keys, ("in", "rr", "nr", "uk")).all():
raise AssertionError("Response mapping dictionnary has unexpected value(s)")
[docs]def assert_brr_number_psus(psu: np.ndarray) -> None:
if psu.size % 2 != 0:
raise AssertionError("For the BRR method, the number of PSUs must be a multiple of two.")


| DOSE: |
40 g |
oral |
GHB |
(daily) |
I did GHB for about four months two years ago and although I just missed killing myself with it, I did a pretty good job of screwing up my life.
Note: I'm not blaming the drug for what I did. My choices were my own. And some people appear to have no problem taking G on a sporadic basis. Many do, however -- many message boards show examples. A lot of the info I read about GHB back in '99 was pretty misleading, and in retrospect, obviously written by people using.
I've always been a pretty depressed type, with a few sporadic and short mildly manic periods; possibly bipolar with emphasis on depression.
In my teens/early 20s I became a pretty big pothead -- which doesn't help depression -- but I stopped cold, with zero problems, once I moved to the States. About three years ago, I wanted to get some pot again, but the places where I had once seen it sold on the street had been long shut down by the cops. So I asked around and was referred to a 'house dealer' by a friend, who brought me along.  Although I had heard of this, I didn't know much about it. I read up on it and decided to try it -- for personal/spiritual development more than any kind of high while clubbing (I don't do the nightlife thing).
So far, so good -- excellent even. Had some wonderful experiences and insights on E as did my girlfriend. Also experimented with LSD, again after much research, and more from a personal development interest than a desire for trippy visuals (which I got a minimum of). Again, a great learning experience.  I came into a chunk of cash and decided to lay in a large supply (50 pills) of E. After a rapid tolerance buildup, doing 3 E at a time would give me little more than a too much caffeine buzz. And I was doing more and more LSD trying to recapture the 'high', with less and less effect.
At this point, I had for a while been struggling with the realisation that my original intentions with this stuff had been replaced by thrill seeking. I stopped using (except for pot) -- not very difficult, as they weren't doing much for me any more. My girlfriend had also burned out a bit on E, though she never used it in the amounts I did.
 Major depression, suicidal thoughts. Despite knowing my motives weren't so pure, I still wanted to get back to the strange spaces and feelings E and LSD had brought me initially. So I tried Ketamine around this time and had some weird, interesting experiences but with an overall very disconnected, gritty, depressing feel -- think Dark City or Pi. Overdid that for a few weeks and worsened the depression. Stopped doing it.
More and more, I withdrew from my girlfriend and other people, dreaded going to work each day. This depression went on for six months with no end in sight, and I decided that, turning thirty that year, I was going to be just as in debt, out of shape, etc. as I was when I turned twenty; and that if things didn't change I'd kill myself over New Years. Not a heat of the moment thing, just what seemed a cold and clear decision to end it if nothing changed.
At which point my girlfriend called one day, excited and giddy. She had read about this stuff that gave an E-like high, without tolerance buildup or serotonin dips, and had ordered a kit. She was totally excited by the results, which she was more than glad to share. I started looking for info on GHB on the web and it all seemed good -- the few exceptions were all at government 'info' sites, which due to my experience with marijuana, I tended to take with a pretty large grain of salt.
I took my first dose later that day, and OH MY GOD was it what I needed, or thought I did. For what seemed like the first time in my life, I actually *wanted* to live. I felt good about my options, I felt good about everything. Giddy, high, but not impaired. I decided that very first day that I *never* wanted to be without it again. I truly felt it had saved me, since I had been serious about committing suicide come year's end if nothing changed.
So I ordered a big supply. Used on a daily basis, and ramped up to 24/7 dosing pretty rapidly -- taking a dose every two hours or so. There were a number of positive effects initially, in terms of overcoming anxiety and depression, abreacting out some long standing personal issues, and on creativity and productivity. But over time, I became totally manic -- I was having more ideas than I could keep track of (and everybody who would stand still was going to hear all about them at 200 words per minute); quit work because I was going to be a genius mastermind artist who, while getting rich off brilliant inventions, would save the world in his spare time; became very irritable and intolerant with anybody who couldn't keep up with me. My girlfriend never had these issues with G. She did, however, have issues with how I was acting -- but much more seriously, with her mother's breast cancer having returned with a vengeance. What did I care, I was happy.
I pretty much withdrew from or pissed off her and the few good friends I had. Wrote scathing, rambling emails to my parents about what I perceived as their wrongs, then got defensive and angry when they asked what was going on with me, why I was acting and sounding so different.
I started acting in pretty disturbing ways.  Felt much more confident approaching women, not a bad thing; but ended having unprotected sex with a few whom I, in retrospect, should have had serious concerns about.
That was pretty mild, though, compared to waking up on the pavement to find EMS workers and police staring at me. I told them I had drunk too much and passed out, was charming about it, and they brought me home. Didn't seem like a big deal.
BTW, I never dosed to get to sleep, only to get high. I would sleep when I could no longer stay up/get high, maybe a few hours a day.
Next time, I was stumbling home from the poetry reading, woke up with EMS workers and police around, bleeding from my face. No charm this time, I angrily insisted they let me walk the few blocks home. No dice -- handcuffed to the stretcher in the ambulance; they were convinced I was on crystal meth. I kept saying I wasn't, but I wasn't very pleasant and I refused to say what I had been using. I left the hospital as soon as I could walk and sign the disclaimer forms.
Well, at this point I realized things weren't too good. I thought of this as a pretty mild 'not too good'. But I started looking for more info on GHB and read some posts on usenet about dopamine rebound and other withdrawal symptoms. I decided to lay off it for a while, after finishing my current stash. So I did. Had a few pretty bad days, but that seemed to be it. This is after approximately two months of use, with the last few weeks on the every two hour diet. Overall mood was fine after withdrawal, I felt reasonably good with periods of manic happiness.
I ordered more GBL after a month off. Didn't have the money for proper NaOH, so when the GBL came two weeks later I opted for Red Devil Lye.
The period that followed is still pretty much a blur to me.
I do remember one incident: being woken up in my building's elevator by the cops. Again, I insisted they let me go back to my apartment; they insisted I don't. I particularly recall asking aggressively and haughtily whether they were arresting me, and saying that if they weren't, they ought to let me go. Here's a little tip: don't call the cop who is handcuffing you 'bitch'. Same deal as before -- emergency room, and as soon as I could get the disclaimer forms, I signed myself out and headed back home for my fix.
After that, I remember my apartment in fits and spurts, in a nightmarish state. Kept dosing up but had no effects, would feel tremendously agitated, then suddenly fall asleep. Wake up suddenly in a confused panic. Do more G. Going to the side of my apartment where my bed is, but it's confusing, my bed's not there, there's a table -- oh, wrong end of the apartment. Spin, knock stuff over, fall, repeat. Somewhere in there my lights were cut for non payment. Somewhere in there I drank something like half a liter of GBL, straight. Somewhere in there I decided to do laundry in the bathtub -- dumped all my clothes and some detergent in, and started the tap.
That's how they found me: the downstairs neighbors complaining about a leak. EMS thought I was dead when they saw me. I had been comatose for three days and was lying in a few inches of water. Kept me in the ICU for a week and a half or so, very touch and go with heartrate and blood pressure, massive dehydration, massive kidney problems, major muscle breakdown in my legs, all sorts of fun. I slipped in and out of consciousness; they had me on massive doses of Ativan and I was having extremely scary, hallucinatory nightmares. They transferred me to the psych ward, where I ended up for four weeks. I was in a wheelchair because of muscle loss, and the first few weeks are a drugged haze. The doctor there later told me I held forth at length about GHB and displayed aggressive and narcissistic tendencies early in my stay, so I guess the G or its effects was still in my system at the time.
They got me off Ativan and on Klonopin, and weaned me off Klonopin during the last week. I could walk again, if a bit wobbly.  My girlfriend visited a few times and was, and has been, very supportive.  No health insurance either, so hello astronomical hospital bill.
Yep, I started feeling quite a bit of anxiety about going out into the world again -- being in a psych ward on heavy meds is a pretty low pressure lifestyle. Talked about it a bit with the docs, they thought I'd do fine.
Well, I haven't done GHB for two years now. Unfortunately, what I'm doing instead is drinking heavily. Never had much taste for alcohol before, but I appear to have been cross trained by the G addiction. Life is fucked, and I've been thinking about doing G again, even though I'm pretty sure that this time, it'll kill me.
Results so far:
~130K hospital bill.
Outstanding IRS debt and other debts, don't know the total, don't want to.
Teeth in horrible shape, some literally rotting away, due to heavy drinking and smoking and neglecting my health generally, possibly also due to heavy G use.
Loss of trust of family and friends.
Shame, guilt and fear over all the wrongs I've done and all the people who saw me do it.
Experience Reports are the writings and opinions of the individual authors who submit them.
Some of the activities described are dangerous and/or illegal and none are recommended by Erowid.


JOE THE KING A film review by Steve Rhodes Copyright 1999 Steve Rhodes RATING (0 TO ****): **
Dysfunctional families are in.
Writers and directors figure that the more the adults scream obscenities at the kids, the more the films will gain the sympathy of the audience. If the kids do their own share of cussing, then even better because it will reflect on the kids' upbringing. And, if the filmmakers can get an A-list star (Val Kilmer in this case) to attach himself to the project, they can easily find a studio to green light its production.
So it is with JOE THE KING by actor Frank Whaley in his debut as a writer and director. The movie has an underdeveloped script that feels like an uncompleted outline. Not much happens in this coming-of-age story, save one incident.
The opening section, shot comically with wide-angle lenses, is so unbelievable that it made me think that the movie was going to be a parody, not the grippingly realistic drama that it was billed to be. In it, a third-grade teacher (Camryn Manheim) needlessly ridicules poor Joe Henry (Peter Tambakis). Then for the sin of not giving the right answer, she pulls down his pants and spanks his bare bottom in front of the entire class.
When we meet Joe's father, Bob (Kilmer), he, too, has been lambasted by one of the school's teachers. He's an alcoholic and the school's janitor. As he cowers in the shadows, the teacher lambastes him for his drinking. A born loser, he owes almost everybody in town money.
After a few minutes, the movie skips ahead 5 years, when Noah Fleiss plays Joe as a 14-year-old and Max Ligosh plays his year older brother, Mike.
Joe works late every night at a local restaurant. He's also a thief, but the story treats this so inconsequentially that you almost don't notice. Joe is an abused kid so we are supposed to be sympathetic, not critical.
The movie's central characters are all miscast. As a semi-illiterate, blue collar worker, Kilmer is never credible. The two boys playing his sons have the good looks and perfect skin of photographic models. They show the intelligence and demeanor of prep school students, not children below the poverty line. Karen Young, as the boy's mother, phones in her performance, bringing nothing to her role.
"There are good people, Joe, and then there are guys like me," his father says in perhaps his only cogent thought in the story. "Don't get caught on the wrong side of this equation."
For all the movie's problems, one can't help but feel sorry for Joe. Too bad his story was just sketched for us. With a different cast and a more finished script, we could have gotten to know him.
JOE THE KING runs 1:40. It is rated R for language and abusive situations and would be acceptable for teenagers.
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Upload Image
SharpMT uses the support offered by most Blog engines to upload images to your Blog server.
Upload Image options
- Select an image to upload:
- Click the Browse button to select an image to upload. At this time, images are only supported format that is allowed by most Blog servers and only one image may be uploaded at a time.
- Enter the path and name of the remote image:
- In some cases you will want to direct the uploaded image to a location other than the root of the Blog and you might even want it to be hosted with a file name that's different than the local file. This is quite common for sites that have a "photo of the day" on display: the image uploaded will probably have a unique name locally but you want to overwrite the existing potd.jpg file.
- The remote path will be relative to the Blog URL:
- This is the current Blog URL, shown as a different for you, so that you know where the file is going.
- Insert IMG tag with this link as SRC:
- Assuming that you have a draft already open before opening the Upload Image dialog, you will be giving the option of inserting an image tag into the draft with the SRC attribute set to the link of the newly uploaded image. The format of this is defined on the Tags Options dialog.
- ALT attribute:
- If the Image Tag that is defined with the [ALTTAG] placeholder, the text entered in this field is used in the resulting text.


DBC Cultural Blog |
Stereotype Threat
OR, why I stopped playing D&D
March 15th, 2015
So, middle school was a big time for me. I know, most people recal college or highschool when asked about their formative years, but for me, middle school is where I was set on my current path. For background, my dad was the school librarian at the school that I attended, and I would always accompany him when he left to go to work. This meant that I was always in the library about an hour before class started, just hanging out. There was another kid who also arrived about an hour early, because his mother had a long commute for work, and she needed to drop him off before continuing on to her job. Needless to say, him and I became good friends.
I was doing pretty well in school at the time. Despite being in 7th grade, I was tested at a 12th grade reading level. My language arts teacher even gave me a special book to do my book report on, because she thought that the book the rest of the class was going to use would bore me. So, she gave a 7th grader Frank Herbert's DUNE to read, and single handedly launched my interest in sci-fi. It was around this time that my friend and I began to hang out inside during recess. We would still go out and play soccer on occasion, but he had discovered this book written by Gary Gygax, about this game called dungeons and dragons. We spent many a lunch hour looking over it, or talking about different aspects of it. But, as this is a post about how I stopped playing, you can guess that something happened.
Around this time is when we began to talk about girls, and my friend and I quickly found ourselves cast into the "nerd" category because of our activities. We were smart, we stayed inside at recess, we really did hit a lot of the stereotypes on the head. But, we wanted to fit in, even if just a little bit. So, we started to suppress some of our hobbies. We would still chat about computers and in particular a game called starcraft, but these were our own private conversations, and no one would mark us as "nerds" without listening in. On the other hand, the D&D had to go. After all, to fit in we had to go to recess, which meant we needed to drop the lunchtime tabletop sessions.
In essence, I was afraid of being labeled with all of the negative things of being a nerd, all of the social inequities and undesirableness of that social group. So, I did what I thought was best and started trying to disprove the stereotype, and hide anything that might confirm it. I think Claude M. Steele was exactly right that everyone identifies with at least one group that has negative stereotypes associated with it, and I can personally say that I routinely hide some of my interests or curb my enthusiasm to avoid negative aspects of the "nerd" label that I associate with.
I told you all that so I can discuss, briefly, that the main way I feel that stereotype threat can be negated. I think the easiest way to stop people from feeling threatened by stereotypes is to make sure they understand that there actions are not reflection on the area of life that the stereotype concerns. What I mean by this is, Like Claude found, if they told students that a test was a measure of ability, they were affected by stereotype threat. However, if they were told that the test was just a lab exercise, the students didn't feel threatened. I think that just as the students fear of proving a stereotype based around lack of ability wasn't activated when it was stressed that the activity did not reflect on their ability, Someone like me could be set at ease if they were reassured that their actions did not reflect on their social skills, for example. At any rate, I have run out of time, so hopefully I have given people some thoughts to consider.


| | Class | Description |
| | DataResource |
This is a Resource subclass for arbitrary data. |
| | ImageResource |
This is a Resource subclass for image data. |
| | MP3Resource |
Load Sounds from MP3s using Flash Player's built in MP3 loading code. |
| | Resource |
A resource contains data for a specific type of game asset. |
| | ResourceBundle |
The resource bundle handles automatic loading and registering of embedded resources. |
| | ResourceEvent |
A ResourceEvent is an Event used by a Resource to dispatch load status information. |
| | ResourceManager |
The resource manager handles all tasks related to using asset files (images, xml, etc)
in a project. |
| | SoundResource |
Parent class for any resources which provide Sound objects. |
| | SWFResource |
This is a Resource subclass for SWF files. |
| | XMLResource |
This is a Resource subclass for XML data. |


{{Template:UiOslo_Norway/Head}} {{Template:UiOslo_Norway/Header}} {{Template:UiOslo_Norway/TopBar}}
Due to restrictions imposed by the COVID-19 situation we were unable to perform any experiments. Protocols herein will be an indication of what we would aim to do if we had access to laboratories.
Goal:
The goal of our synthetic biology plan was to engineer E. coli to produce salinomycin and then process salinomycin to produce narasin, an antiparasitic compound. This would complement our early detection system for amoebic gill disease (AGD) with a treatment option that is less harmful for fish in early steps of AGD. Our first step would be to clone the LuxR- family transcriptional regulator, SlnR into E. coli cells.
How would we reach that goal?
Our plan would be to clone the salinomycin producing gene cluster from Streptomyces Albus into E. coli [1]. Since salinomycin targets gram-positive bacteria, the gram-negative E. coli is a good candidate for salinomycin production. Our first steps would be to isolate SlnR from Streptomyces Albus gDNA ( protocols 1.1 -1.6). We would then clone it into a pBAD/His A expression vector and transform it with chemically induced E. coli cells (protocols 2.1 - 3.1).
We would then aim to verify successful transformation via colony PCR, sequencing of transformants (protocols 3.2 - 3.4). To verify functional insert we would perform expression and purification of protein of interest and electrophoretic mobility shift assay[1,2] (protocols 4.1 - 4.2)
Articles that we drew insipiration from
[1] Zhu, Z., Li, H., Yu, P. et al. SlnR is a positive pathway-specific regulator for salinomycin biosynthesis in Streptomyces albus . Appl Microbiol Biotechnol 101, 1547–1557 (2017). https://link.springer.com/article/10.1007/s00253-016-7918-5
[2] Liu, S., Yu, P., Yuan, P. et al. Sigma factor WhiGch positively regulates natamycin production in Streptomyces chattanoogensis L10. Appl Microbiol Biotechnol 99, 2715–2726 (2015). https://link.springer.com/article/10.1007%2Fs00253-014-6307-1
Click to view our protocols in PDF-format.


There are several inputs to control elements visibility:
Use tabs
input to pass tabs you want to show.
The order of the tabs depends on the order of the tab list you specify.
Available values:
Tab.SECONDS, Tab.MINUTES, Tab.HOURS, Tab.DAY, Tab.MONTH, Tab.YEAR
Use hideTabs
input to hide tab buttons.


Dear HITTECH WEMAC SDN. BHD.,
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Application Reference No. : KDN/16021/HBBAVR2554125/QA03 Applied By : HITTECH WEMAC SDN. BHD. Applied Date : 12 JULY 2018 No. of Quota Allocated : 1 Remarks :
KDN Reference No. : KDN/16031/HBAVR3554125 Company Registration No. : 723665-D Company Name : HITTECH WEMAC SDN. BHD. Sector : SERVICES Sub-Sector : LAUNDRY Job Category : LAUNDRY WORKER Country : BANGLADESH Quota Approbed by KDN : 50 Approved Date : 19 FEBRUARY 2018 Expiry Date : 18 AUGUST 2019
Recruitment Agent
DHAKA OMEGA (A123123) NO. 4, DHAKA STREET, DHAKA<PHONE_NUMBER>62<EMAIL_ADDRESS>No. of Quota
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For any technical assistance. Please contact us at (+60) 3 7865489 or email us at jls-enquiries@jls.com.my


public class SubgraphManager
extends java.lang.Object
| Constructor and Description |
|---|
SubgraphManager() |
| Modifier and Type | Method and Description |
|---|---|
static RAMStorageGraph |
decodeSubgraph(java.lang.String sgraphString) |
static void |
dumpGraphToFile(java.io.File file,
StorageGraph graph,
boolean outputByteBuffers)
Debugging method: will write the complete StorageGraph in a File where lines
are sorted by the graph's key handles.
|
static java.lang.String |
encodeSubgraph(StorageGraph sgraph) |
static java.lang.Object |
get(StorageGraph subgraph,
HyperGraph graph)
Assuming a single root, write the
StorageGraph to (merge it with)
the HyperGraph for the sole purpose of reading back a run-time
atom. |
static HGHandle[] |
getAtomTargets(java.lang.Object atom) |
static java.util.Map<HGHandle,HGHandle> |
getLocalTypes(HyperGraph graph,
java.util.Map<java.lang.String,java.lang.String> typeClasses)
Return a map between remote type handles and local type handles.
|
static Json |
getTransferAtomRepresentation(HyperGraph graph,
HGHandle atom) |
static Json |
getTransferAtomRepresentation(HyperGraph graph,
java.util.Set<HGHandle> S)
Returns a structure ready to be embedded in a message for atom transfer.
|
static java.lang.Object |
getTransferGraphRepresentation(HyperGraph graph,
HGTraversal traversal) |
static java.lang.Object |
getTransferObjectRepresentation(HyperGraph graph,
HGHandle atomHandle,
java.lang.Object atom,
HGHandle typeHandle)
Serialize an arbitrary object (not necessarily stored in the database) as a hypergraph atom for
wire transmission.
|
static java.lang.Object |
readAtom(HGHandle handle,
HyperGraph graph,
RefResolver<HGHandle,HGAtomType> typeResolver,
StorageGraph subgraph) |
static void |
store(StorageGraph subgraph,
HGStore store) |
static void |
store(StorageGraph subgraph,
HGStore store,
java.util.Map<HGPersistentHandle,HGPersistentHandle> substitute)
Write the passed in
StorageGraph to the permanent
HGStore in a single transaction. |
static java.util.Set<HGHandle> |
writeTransferedGraph(Json atom,
HyperGraph graph)
IMPORTANT: Assumes atom does not exist locally! Writes directly to storage and updates relevant indexes
based on that assumptions.
|
static java.util.Set<HGHandle> |
writeTransferedGraph(Json atom,
HyperGraph graph,
Mapping<Pair<HGHandle,java.lang.Object>,HGHandle> atomFinder) |
public static java.lang.String encodeSubgraph(StorageGraph sgraph)
public static RAMStorageGraph decodeSubgraph(java.lang.String sgraphString)
public static void dumpGraphToFile(java.io.File file, StorageGraph graph, boolean outputByteBuffers)
file
- public static void store(StorageGraph subgraph, HGStore store)
public static void store(StorageGraph subgraph, HGStore store, java.util.Map<HGPersistentHandle,HGPersistentHandle> substitute)
Write the passed in StorageGraph
to the permanent
HGStore
in a single transaction. The StorageGraph
must be small enough to fit in a single transaction. How small exactly
that is depends on the underlying storage mechanism, available memory,
available transactional locks etc.
You can specify a map from data in the StorageGraph
to "local"
HGStore
data in the substitute
parameter. This map
states that a given key is to replaced by the given value during storage. Elements
in this map's domain are not written because they have equivalents in the
HGStore
already. Moreover, whenever a link from the StorageGraph
parameter points to one of the elements in map's domain it is replaced by the
corresponding element of the map's range.
public static HGHandle[] getAtomTargets(java.lang.Object atom)
public static java.lang.Object get(StorageGraph subgraph, HyperGraph graph)
StorageGraph
to (merge it with)
the HyperGraph
for the sole purpose of reading back a run-time
atom. Then delete that atom from the graph.
NOTE: this method assumes that the single atom represented in the StorageGraph
parameter does not exist locally in the HyperGraph.subgraph
- graph
- public static Json getTransferAtomRepresentation(HyperGraph graph, HGHandle atom)
public static Json getTransferAtomRepresentation(HyperGraph graph, java.util.Set<HGHandle> S)
Returns a structure ready to be embedded in a message for atom transfer.
graph
- atom
- public static java.lang.Object getTransferObjectRepresentation(HyperGraph graph, HGHandle atomHandle, java.lang.Object atom, HGHandle typeHandle)
graph
- atom
- typeHandle
- public static java.lang.Object getTransferGraphRepresentation(HyperGraph graph, HGTraversal traversal)
public static java.lang.Object readAtom(HGHandle handle, HyperGraph graph, RefResolver<HGHandle,HGAtomType> typeResolver, StorageGraph subgraph)
public static java.util.Set<HGHandle> writeTransferedGraph(Json atom, HyperGraph graph) throws java.lang.ClassNotFoundException
atom
- graph
- java.lang.ClassNotFoundException
public static java.util.Map<HGHandle,HGHandle> getLocalTypes(HyperGraph graph, java.util.Map<java.lang.String,java.lang.String> typeClasses)
Return a map between remote type handles and local type handles. A remote type handle
is mapped to a local type handle if their corresponding classes, as provided by the
typeClasses
map argument, are the same. A remote type
handle is mapped to itself if either (1) there's no association with a class in the typeClasses
map (i.e. the classname is the empty string) or
(2) it is associated with a class that cannot be found locally.
graph
- typeClasses
- java.lang.ClassNotFoundException
public static java.util.Set<HGHandle> writeTransferedGraph(Json atom, HyperGraph graph, Mapping<Pair<HGHandle,java.lang.Object>,HGHandle> atomFinder) throws java.lang.ClassNotFoundException
atom
- A Structs representation of a transfered graph.graph
- The HyperGraph instance to be written to.atomFinder
- Return handles of existing atoms so that they are not stored
again or under a different handle. This parameter can be null in which
case existing atoms (with the same handle) are overwritten and equivalents
(same "information import", but different handle) are ignored.java.lang.ClassNotFoundException


Hello! Village "{{ village.name }}" was created or updated. It needs to be approved before it is shown on the public website. Please visit this page to approve it. Best regards, The BornHack Website


|
masscalculator-core
|
String constants that are used through the code. More...
Variables | |
| const std::string | Z_190 {"Z_190"} |
| String constant for Z_190 type. | |
| const std::string | Z_310 {"Z_310"} |
| String constant for Z_310 type. | |
| const std::string | Z_320 {"Z_320"} |
| String constant for Z_320 type. | |
| const std::string | Z_500 {"Z_500"} |
| String constant for Z_500 type. | |
| const std::string | Z_700 {"Z_700"} |
| String constant for Z_700 type. | |
| const std::string | Z_720 {"Z_720"} |
| String constant for Z_720 type. | |
| const std::string | Z_750 {"Z_750"} |
| String constant for Z_750 type. | |
| const std::string | UNSPECIFIED {"UNSPECIFIED"} |
| String constant for UNSPECIFIED type. | |
| const std::string | LuaConfigPath {std::string(getenv("HOME")) + "/.MassCalculator/resources/materials/zinc_config.lua"} |
| Lua config path when we are in release mode, it will get the resources from the install directory. | |
String constants that are used through the code.


Created on 16/03/2012
@author: victor
Bases: unittest.case.TestCase
Created on 14/05/2012
Created on 13/11/2013
Created on 13/12/2012
Created on 02/05/2012
Created on 16/05/2012
Enter search terms or a module, class or function name.


Prints a list of tensors. (deprecated)
tf.compat.v1.Print( input_, data, message=None, first_n=None, summarize=None, name=None )
Warning: THIS FUNCTION IS DEPRECATED. It will be removed after 2018-08-20. Instructions for updating: Use tf.print instead of tf.Print. Note that tf.print returns a no-output operator that directly prints the output. Outside of defuns or eager mode, this operator will not be executed unless it is directly specified in session.run or used as a control dependency for other operators. This is only a concern in graph mode. Below is an example of how to ensure tf.print executes in graph mode:
This is an identity op (behaves like tf.identity
) with the side effect
of printing data
when evaluating.
Note: This op prints to the standard error. It is not currently compatible with jupyter notebook (printing to the notebook server's output, not into the notebook).
input_
: A tensor passed through this op.data
: A list of tensors to print out when op is evaluated.message
: A string, prefix of the error message.first_n
: Only log first_n
number of times. Negative numbers log always;
this is the default.summarize
: Only print this many entries of each tensor. If None, then a
maximum of 3 elements are printed per input tensor.name
: A name for the operation (optional).A Tensor
. Has the same type and contents as input_
.
```python
sess = tf.compat.v1.Session() with sess.as_default(): tensor = tf.range(10) print_op = tf.print(tensor) with tf.control_dependencies([print_op]): out = tf.add(tensor, tensor) sess.run(out) ``` Additionally, to use tf.print in python 2.7, users must make sure to import the following:
from __future__ import print_function


Environment-specific configuration
| package |
Default |
|---|
__construct(string $path, string $file = '.env')
string
string
getVariable(string $name) : string|null
This was borrowed from the excellent phpdotenv with very few changes. https://github.com/vlucas/phpdotenv
string
string|null
load() : boolean
boolean
normaliseVariable(string $name, string $value = '') : array
string
string
array
resolveNestedVariables( $value) : string
Look for ${varname} patterns in the variable value and replace with an existing environment variable.
This was borrowed from the excellent phpdotenv with very few changes. https://github.com/vlucas/phpdotenv
string
sanitizeValue(string $value) : string
This was borrowed from the excellent phpdotenv with very few changes. https://github.com/vlucas/phpdotenv
| Throws |
|
|---|
string
string
setVariable(string $name, string $value = '')
string
string
path : string
| var |
|---|
string


--- layout: post tags: [AutoFixture, Unit Testing] date: 2010-03-27 13:27:02 UTC title: "Freezing mocks" --- {% include JB/setup %}
My previous post about AutoFixture's Freeze functionality included this little piece of code that I didn't discuss:
var mapMock = new Mock<IPizzaMap>(); fixture.Register(mapMock.Object);
In case you were wondering, this is Moq interacting with AutoFixture. Here we create a new Test Double and register it with the fixture. This is very similar to AutoFixture's built-in Freeze functionality, with the difference that we register an IPizzaMap instance, which isn't the same as the Mock<IPizzaMap> instance.
It would be nice if we could simply freeze a Test Double emitted by Moq, but unfortunately we can't directly use the Freeze method, since Freeze<Mock<IPizzaMap>>() would freeze a Mock<IPizzaMap>, but not IPizzaMap itself. On the other hand, Freeze<IPizzaMap>() wouldn't work because we haven't told the fixture how to create IPizzaMap instances, but even if we had, we wouldn't have a Mock<IPizzaMap> against which we could call Verify.
On the other hand, it's trivial to write an extension method to Fixture:
public static Mock<T> FreezeMoq<T>(this Fixture fixture) where T : class { var td = new Mock<T>(); fixture.Register(td.Object); return td; }
I chose to call the method FreezeMoq to indicate its affinity with Moq.
We can now rewrite the unit test from the previous post like this:
[TestMethod] public void AddWillPipeMapCorrectly_FreezeMoq() { // Fixture setup var fixture = new Fixture(); var basket = fixture.Freeze<Basket>(); var mapMock = fixture.FreezeMoq<IPizzaMap>(); var pizza = fixture.CreateAnonymous<PizzaPresenter>(); var sut = fixture.CreateAnonymous<BasketPresenter>(); // Exercise system sut.Add(pizza); // Verify outcome mapMock.Verify(m => m.Pipe(pizza, basket.Add)); // Teardown }
You may think that saving only a single line of code may not be that big a deal, but if you also need to perform Setups on the Mock, or if you have several different Mocks to configure, you may appreciate the encapsulation. I know I sure do.
Comments
You mentioned that adding an indirection between the tests and the SUT constructor helps with refactoring. But if I add a dependency to the SUT, I will still have to add calls to "fixture.Register" to fix my tests. And if I remove a dependency, then my tests will still work but the setup code will accumulate unnecessary cruft. It might be preferable to get a compiler error about a constructor argument which no longer exists.
My own approach for minimizing the impact of refactorings on tests is to just store the SUT and mocks as fields of the test class, and create them in the TestInitialize/SetUp method. That way there is only one place were the constructor is called.
Setting up your Test Fixture by populating fields on the test class is a common approach. However, I prefer not to do this, as it binds us very hard to the Testcase Class per Fixture pattern. Although it may make sense in some cases, it requires us to add new test classes every time we need to vary the Test Fixture even the slightest, or we will end up with a General Fixture, which again leads to Obscure Tests.
In my opinion, this leads to an explosion of test classes, and unless you are very disciplined, it becomes very difficult to figure out where to add a new test. This approach generates too much friction.
Even without AutoFixture, a SUT Factory is superior because it's not tied to a single test class, and if desirable, you can vary it with overloads.
The added benefit of AutoFixture is that its heuristic approach lets you concentrate on only the important aspects of a particular test case. Ideally, AutoFixture takes care of everything else by figuring out which values to supply for all those parameters you didn't explicitly supply.
However, I can certainly understand your concern about unnecessary cruft. If we need a long sequence of fixture.Register calls to register dependencies then we certainly only introduce another level of maintainance hell. This leads us into an area I have yet to discuss, but I also use AutoFixture as an auto-mocking container.
This means that I never explicitly setup mocks for all the dependencies needed by a SUT unless I actually need to configure it. AutoFixture will simply analyze the SUT's constructor and ask Moq (or potentially any another dymamic mock) to provide an instance. This approach works really well, but I have yet to blog about it because the AutoFixture API that supports automocking has not yet solidified. However, for hints on how to do this with the current version, see this discussion.
I think the following is what you meant (or maybe this article i
Wes, thank you for writing. You are indeed correct that this particular overload of the Register method no longer exists, and Inject is the correct method to use. See this Stack Overflow answer for more details.
This article is out of date. Readers wishing to use AutoFixture with Moq should read AutoFixture as an auto-mocking container.


People who came to Japan before this web site had to face many problems. On the one hand, it was difficult to understand Japanese, and on the other hand, no language other than Japanese is used in Japan. If you search on Google for some information, you will not find it in any language other than Japanese. In this case , the most widely used English language web site in the world has helped all foreign students. This website is specifically targeted at students coming to study at KCGI and is helping all foreigners coming to Japan in different fields.


My journey begins here: http://www.ogre3d.org/phpBB2/viewtopic.php?t=5706. I don't want to compile Ogre3D from source and want to use the Debian packages instead.


As part of my degrees I have had to undertake personal research projects. Click on the links below to find out what topics I studied:


--- layout: page title: "Practical Vim (for Kathryn Amaral)" prev: f_0007.html next: f_0009.html book_path: books/drew-neil-practical-vim-edit-text-at-the-speed-of-thought-_oeb/ --- {% include JB/setup %} {% raw %}
In Vim, there’s always more than one way to complete any given task. For example, in Chapter 1, The Vim Way, all of the problems are designed to illustrate an application of the dot command, but every one of them could also be solved using the :substitute
command.
On seeing my solution, you might think to yourself, “Wouldn’t it be quicker to do it this way?” And you may well be right! My solutions illustrate a particular technique. Look beyond their simplicity, and try to find a resemblance to the problems that you face daily. That’s where these techniques will save you time.


Main HOI GUI
Menu Bar
File:
Create, open, save and load workspaces from here
Define:
Define the architecture to start validating
Analyse:
Analyse the software project you have imported
Validate:
Validate the project after you've defined the architecture
Tools:
Configurations can be made here
Help:
More information about HUSACCT
Tool bar
The toolbar provides quick access. You can customize your toolbar in the configuration screen
Shortcuts
The shortcuts provides quick access. You can customize your shortcuts in the configuration screen


System Architect Symbol details for "Intention State"
Abandoned Intention (Class)
- Child Diagrams:
-
Abandoned Intention (
UML Class)
Description:
"Intention" which has not been fulfilled, but for which there is no further action intended.
Comment:
As distinct from "Not Required", where it was never required in the first place.
Agent Accepted Intention (Class)
- Child Diagrams:
-
Agent Accepted Intention (
UML Class)
- Description:
"Intention" which has been accepted by the originator and/or another "Agent" for action.
Agent Rejected Intention (Class)
- Child Diagrams:
-
Agent Rejected Intention (
UML Class)
- Description:
"Intention" which has been rejected by the requestee "Agent".
Agent Selected Intention (Class)
- Child Diagrams:
-
Agent Selected Intention (
UML Class)
- Description:
"Intention" which has been requested of another "Agent" for action.
classifier (Association)
- From Class:
"Intention State Type"
- To Class:
"Intention State"
- From Class:
"Intention State Type"
- To Class:
"Intention State"
Fulfilled Intention (Class)
- Child Diagrams:
-
Fulfilled Intention (
UML Class)
- Description:
"Intention" considered to have been completed successfully.
Intention (Class)
- Description:
"Property Qualifier" being the general purpose of the care for an "Established Focus".
intention for (Association)
- From Class:
Intention
- To Class:
"Intention State"
- From Class:
Intention
- To Class:
"Intention State"
Intention State (Class)
- Description:
"Intention" in a state which it is currently or has been previously.
- Comment:
Note that there are both subtypes (comprising all the possible states) and a "power type" of
"Intention State Type". The latter's contents are identical to the subtypes; it exists in order to
control topics such as access and permission to amend.
Intention State Change (Class)
- Description:
"Activity" changing the state of an "Intention".
Intention State Type (Class)
- Description:
"State Type" being one of the permissible states for "Intention".
Intention Under Consideration (Class)
- Child Diagrams:
-
Intention Under Consideration (
UML Class)
- Description:
"Intention" which is appropriate for the "Focus For Further Activity".
Intention/State (Generalization Node)
- Child Diagrams:
-
Intention/State (
UML State)
- Base Class:
"Intention State"
- Definitions Used:
-
Intention State (Class)
Not Required Intention (Class)
- Child Diagrams:
-
Not Required Intention (
UML Class)
- Description:
"Intention" which it has been decided not to proceed with.
Required Intention (Class)
- Child Diagrams:
-
Required Intention (
UML Class)
- Description:
"Intention" which is definitely to be taken forward.
responsible for (Association)
- From Class:
"Intention State Change"
- To Class:
"Intention State"
- From Class:
"Intention State Change"
- To Class:
"Intention State"


Make sure you see art everyday. Visit Art App to view a random selection of artworks, search artists, or add your own work.


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--- layout: component-layout title: How to prepare Saved Replies? link-title: Saved Replies category: Productivity url: /uvdemo/productivity/replies.html tags: [Saved Replies, Prepare Saved Replies, Create Saved Replies, Creating Saved Reply, Creating Saved Replies, Instant Reply, Instant Replies, Reply Templates, New Saved Reply] ---
UVdesk - How to prepare Saved Replies?
Saving time by instant replies:
Even the vast knowledgebase can't protect support staffs or the agents from the most common questions coming up again and again by the customers.
This force agents to reinvent the wheel for the same set of questions which results in inconsistent replies and wasted queries.
What are Saved Replies?
Save agent's time by creating some pre-formatted reply templates to common queries- Saved Replies that helps the agent to answer the question within a single click.
For the next time, any customer asks a question - How to reset a password, the agent can quickly pop out a saved response for that issue and focus on other things that really matter.
Quicks steps for creating Saved Replies:


Actions.CommonActions package¶
Submodules¶
Actions.CommonActions.common_actions module¶
Copyright 2017, Fujitsu Network Communications, Inc. Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
-
class
Actions.CommonActions.common_actions.
CommonActions
[source]¶ Bases:
object
class CommonActions having methods (keywords) that are common for all the products
-
get_system_type
(system_name)[source]¶ Finds the system name in the datafile and returns the system type :Arguments:
- system_name = system name in the datafile
Returns: - status (boolean)
- system_type (dict element): name=system_type, value=type of the system_name (string).
-
set_env_var
(var_key, var_value)[source]¶ create a temp environment variable the value will only stay for this run :Argument:
var_key = key of the environment variable var_value = value of the environment variable
-
store_in_repo
(datavar, datavalue, type='str')[source]¶ For storing datavalue in datavar datarepository :Argument:
datavar = var in data repository in which to store datavalue = the value to be stored type = type of datavalue (string/int/float)
-
verify_data
(expected, object_key, type='str', comparison='eq')[source]¶ Verify value in ‘object_key’ in the data repository matches with expected :Argument:
expected = the value to be compared with object_key = the object in the data repository to be compared type = the type of this expected (str/int/float) comparison = actual comparison (eq/ne/gt/ge/lt/le)
eq - check if both are same(equal) ne - check if both are not same(not equal) gt - check if object_key is greater than expected ge - check if object_key is greater than or equal to expected lt - check if object_key is lesser than expected le - check if object_key is lesser than or equal to expectedReturns: status (boolean)
-
verify_resp_data
(resp_ref, resp_pat, object_key)[source]¶ Verify ‘resp_pat’ exist in the data repository :Argument:
resp_ref = response reference tag in testdatafile resp_pat = response pattern to be check in testdatafile object_key = the object key name in the data repository
- Ex: cli send by title, object_key=<title name>
- cli send by tiele_rownum, object key=<tilte_name><row_name>
Returns: status (boolean)
-
Module contents¶
Copyright 2017, Fujitsu Network Communications, Inc. Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


--- layout: archive title: Zulip Chat Archive permalink: /stream/113488-general/topic/What.20do.20we.20know.20about.20Lean.204.3F.html ---
Hi, I wonder what should I (as a user) expect from Lean 4 and Lean 3 → 4 porting of mathlib. While I found some slides about new core features coming to Lean 4, I failed to find answers to some basic questions.
Are there any big changes coming here?
Is it going to be "let's feature freeze and port to Lean 4", "let's start a new branch gradually pick files from master
", "let's gradually make parts of the library compatible with Lean 4 while maintaining compatibility with Lean 3", or something else?
I ask this to avoid spending too much time on the parts of mathlib that are going to be rewritten from scratch.
Many answers are unknown, but there are a couple of facts:
Less certain pieces include:
The safest bet if you want to work on something that will stay is documentation.
You can pick a random file which has no header and docstrings and document it.
Or, better: write a Windows installer!
I'm afraid my instructions for installing something on a WIndows computer would start with "install Linux".
That's how my instructions start, but experience proved this is not enough.
This is really bad luck. Last year most of my students had Linux at the end of the semester, because they were forced to install it by computer scientists (I'm using Lean with double-major math/CS students). But I need them to start using Lean at the beginning of the semester.
BTW, what changed about class instance resolution in Lean 4?
The algorithm completely changed but as far as I know the new one hasn't been implemented yet
I think it has been implemented, at least partly.
Is there any paper/presentation/... describing the new algorithm?
As far as I know there are just posts by Daniel Selsam on this chat, e.g. https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/instances.20and.20parameters/near/178623928
The algorithm completely changed but as far as I know the new one hasn't been implemented yet
They're in the middle of reimplementing it now
Algebraic classes (monoids, groups, etc)
Are there any big changes coming here?
I don't think I have anything new to share about the other questions, but this one should be easy to answer: AFAIK the plan is not to include the algebraic hierarchy in the corelib, since there is no reason to do so. So this will be up to the community.
what's going to happen with tactic.norm_num
and the algebraic dependencies there?
There should be no reason to include norm_num
in the corelib, either
Last updated: Apr 24 2020 at 19:02 UTC


Single mother goes from housekeeper to successful pastry chef
At Yummy Tummy Pastries in Humble, Texas, every custom cake is made with love by the hands of owner Letty Martinez.
Times weren't always this sweet for Martinez and her children though.
The mother of four found the courage to leave an abusive marriage, raise her young children on her own and turn her part-time passion into one of the most popular cake shops and bakery's in the Houston area.
Because of Martinez's hard work and sacrifice, all four of her children, now adults, are the first generation in the family to graduate from college.


EventStack:
Website for collecting entries of students. In this website, every user has a profile section which contains all the necessary information about the user like personal inforamation, academic information passport, and signature photo. The organizer can create an empty table by selecting columns from the list of the predefined set of columns. After creating table organizer sends it to students. Student gets invitation of that event. When Student accepts it, all the details of that student are fetched from the profile section and filled in that table. This can help students from filling the same information again and again for different events. The table can be downloaded in excel sheet also.


I am a full-stack developer creating web applications using HTML/CSS, Java, SQL, and some flavor of JavaScript. Currently, I'm enjoying the creation of apps using Angular 2 and TypeScript. When I'm not coding, I'm playing video games for fun and relaxation and reading books or listening to books while on walks around the city.
I enjoy creating applications using these technologies.
You can contact me through LinkedIn.


The three boats in the fleet were designed and built by divers as dive boats and not converted from some prior use. Many of the features are unique including circulating mask rinsers at each exit to a submerged ramp and boarding step for easy boarding after a dive. Large benches at the bow and stern make suiting up easier while a special warm-air room dries wet suits quickly between dives. Dual air compressors allow rapid tank refilling so there is never a wait for the next dive.
Dive boat captain Roy Hauser founded Truth Aquatics in 1974. Roy's partner beginning in 1979, Glen Fritzler, is the current owner and operator of all the dive boats in the fleet.
(note: please visit our store for pricing or keep reading for more information)
For those who like to fish, there are live game wells as well as deep freezers to store freshly caught fish. The bunkroom has comfortable single and double bunks that offer curtains and reading lights as well as pillows and blankets along with a dressing room. A large sundeck is available for relaxing between dives or to enjoy during sunrises and sunsets with your favorite beverage.
Hot water showers are located on deck for a quick rinse. There is also a below deck shower room. A waterproof galley allows divers to come in out of the weather with their wetsuits on and enjoy something to eat, work on their camera equipment or just relax. Centrally located heads are waterproof and are convenient to use during the dive day. Kayaks can be stored on a rack out of the way and do not clutter the decks.
In 1973 Roy designed and built the Truth with boat builder Mac McCaully in Venice California. It was launched as California's first state-of-the-art liveaboard dive boat just 10 months later. At the time, the Truth was considered the nicest and best laid out dive boat on the entire California coast having innovations including a waterproof galley, circulating mask rinsers at each exit and an easy to board swim step.
In 1981, the Conception was launched and brought a new meaning to the word "liveaboard." A larger vessel with new innovations such as circulating game wells, below deck shower room, air-conditioned bunkroom, large sundeck and a built in bar-b-que were just a few ideas that set this liveaboard boat in its own class.
In 1985 the Vision was launched and is considered by some to be California's crown jewel of dive boats. Similar in design to the Conception, the Vision is 5 feet longer and 1 foot wider.
Click on the dropdown menu from the adventures tab at the top of the page to see details about the Channel Islands as well as each of the adventures offered through Shoreline Summit Adventures.