These Weeks in Rust
Welcome to a mega-This Week in Rust. I was swamped this past week with schoolwork, so TWiR was put off. This week’s combines the past two weeks of progress. These past two weeks were fairly exciting in terms of language and library progress. The next few weeks should be even more exciting.
What’s cooking on master?
There were 108 PRs merged these past two weeks.
Breaking Changes
- The very long-awaited enum discriminant size
patch has landed. This will
affect FFI. Size of enum discriminant is now configurable via the
repr
attribute, and will by default shrink to the smallest needed. - The extension traits for
Reader
andWriter
have been transformed into default methods on their respective trait. - Non-string literals are now disallowed in attributes.
- Type parameters are now forbidden on inner statics (statics inside functions).
- The interface to flush stdout has
changed. It was previously
unsound by allowing aliased
&mut
. Result
’s API has changed quite a bit, to be more consistent withOption
, and hopefully simpler.- Linker arguments no longer propagate across crates. This means that if you link to a crate, its linker arguments won’t be automatically added when your crate is linked.
- The memory intrinsics have been
simplified. A single intrinsic
for
memcpy
/memmove
/memset
is now exposed, rather than one per platform. #[link(name = "...")]
is now taken into account by rustc when creating build artifacts.std::rt::io::file
has been fleshed out and tweaked. In particular, it has been renamed tostd::rt::io::fs
, many previously-free functions are now associated functions onstd::rt::io::File
, andFileInfo
has been renamed toFileStat
.
Other Changes
- Calling variadic functions with the C FFI is now implemented. This is a pretty sweet change. The only thing missing in our C FFI now is unions.
- We now have octal numeric literals, for all your esoteric numeric needs!
- An
Any
type has been added, and it is now possible to retrieve the object a task failed with. Previously tasks could only fail with a string, now they can fail with anything. - A
concat!
syntax extension has been added for compile-time string concatenation. - Timers are now also ports, and the creator of a timer can cancel it.
- As the first part of closure reform,
proc
is now sugar for~once fn
, and|A| -> B
(andfn(A) -> B
for bare functions) are now allowed in types. - The section in the tutorial on vectors and strings has been rewritten for correctness with modern Rust.
- A bunch of C++ has been removed and rewritten. Thread
creation, memory
regions (used for debugging and
@
-boxes, from what I can tell), and an unusedarray_list
. - Bounds check failures are now marked as a cold
path, and a
cold
function attribute has been added. - The build system can cross-compile to iOS now, even though Rust doesn’t actually run on that platform (yet!).
std::rand
now implements the Gamma distribution.- Cross-crate destructor inlining now works.
- A
type_id
intrinsic has been added. - Everything in the runtime that uses
libuv
has been split into its own crate. This means that the runtime really is pluggable: you can implement your own event loop and so forth.
New Contributors
Welcome to our new contributors!
- Brian
- Carol Willing
- Dirkjan Bussink
- Guillaume Pinot
- Gyorgy Andrasek
- Joshua Yanovski
- Mat Carberry
- Noufal Ibrahim
- Robert Irelan
- Tomas Sedovic
- Jennifer Ward
- Patrick Kim
At .85 new contributors a day, we’ll soon dwarf every other language in the “awesome volunteer” category.
Weekly Meetings
Last week’s meeting discussed segmented stacks (spoiler: they’re not coming back ) and placement new (we want it, how do we want it?).
This week’s meeting discussed the future of libextra, more stack things, octal literals, vector representation, and temporary (“rvalue”) lifetimes.
Announcements etc
- Reminder from
the Ministry of TruthChrisMorgan: Rust is awesome. - Rust Skåne, has an event page now. It will be December 3 at 17:30 in Foo Cafe.
- Integermingled Parameter Lists, and take 2.
- speculate – a parallel speculative execution library.
- mcchat – a pure-Rust Minecraft chat client.


Welcome to our house.
HTML, CSS & JavaScript explained.
HTML
HTML or HyperText Markup Language uses tags to identify content and delivers basic structure to websites.
CSS
CSS or Cascading Style Sheets are what gives a website its style.
JavaScript
JavaScript controls the behavior of a website. It's a
programming language used by web developers to design interactive
websites. One example would be pop up windows.
Hmmm what does all of this mean?
Think of building a website as you would build a house. HTML is the basic structure or frame of the house 2x4s, drywall etc. CSS is the house with added siding, interior paint colors, decor etc. You would be able to change any of those things without changing the structure. Adding JavaScript adds function to the house like gas, electric and plumbing.
Best Websites to Learn Code
In this post I will have two categories of sites: free and not free. From there I will break down the pros and cons of each site.

This site is good for learning the basics.
Con: If you learn best by watching videos Code Academy
might not be the best way for you to learn code. While it is interactive
by assigning exercises and quizzes before you can make it to the next
level, Code Academy does not use videos. In my opinion Code Academy is a
good place to start but it can only get you so far and doesn’t have as
much information to offer as other sites.
YouTube:
Pro: YouTube is free and has a
wealth of knowledge to sift through. If you don’t like how one person
teaches, you can find someone else that will teach you the same thing.
YouTube is also a great source if you are stumped and need to look up how
to do a specific thing instead of a general learning video. Quentin Watt
has an amazing YouTube channel that has courses in HTML, CSS, JavaScript,
Bootstrap and more. He has updated his HTML and CSS to the new standard
and tries to keep his videos up to date.
Con: Old content. People who upload their videos to
YouTube don’t always take down out of date information. You have to be
careful in selecting the most current videos that practice current code
practices. The developer world is fast paced and constantly changing. So
make sure you can keep up or your skills won’t be as valuable.
Not Free Options
Treehouse:
Pro: Treehouse is my personal
favorite site to learn code. It costs 25 dollars a month and has a wide
variety of courses that go into depth on each subject. Treehouse does a
good job of explaining things step by step with an instructor in videos
that have code alongs and quizzes.
Con: Treehouse is done well but since a lot of work goes
into making a new course they have not yet added newer languages such as
React even though it’s been requested by popular demand.
Lynda:
Pro: At Lynda.com you can learn
more than just coding. It’s a wealth of knowledge with videos on Adobe
Illustrator, Photoshop and video editing. They also have small projects
they walk you through that you might want to use on your current website,
like a rotating carousel with a jQuery library they provide you.
Con: There are so many videos on Lynda.com some are bound
to be old. One video I found was using a four year old jQuery library that
was not being maintained anymore and was prone to breaking.


projects
Some of the projects I've worked on.
Similar Image search using K-means clustering in Hadoop
- Given an image, the system returns k closest similar images for a database of 1 million images from Flickr.
- Used feature vectors obtained from VGG-16 network to cluster 1 million images for product quantization.
- Reduced distance computations to 0.4% of original using product quantization.
- Searches for upto top 20 images in 1 sec.
- Transformed and filtered data and implemented distributed k means clustering using Map Reduce in Hadoop.
Social Network Web Service
- Designed a RESTful web service having the functionality of a typical social network; signup, login, friends and wall using Springboot framework in Java and deployed the app on Heroku.
- Used PostgreSQL database and implemented database migrations using Flyway .
- Documented the API using Swagger
- Used Maven as a build tool and Bitbucket Pipelines for CI/CD and followed Agile development practices in a team of 4.
Deep Reinforcement Learning Agent
- Created a deep reinforcement learning agent that learned to play the Flappy bird game from raw video input.
- Implemented the CNN in Python using Tensorflow, OpenCV and pygame environment.
- Studied the effect of reward structures and epsilon probabilities on the learning process.
- Based on the paper “Playing Atari with Deep Reinforcement Learning” by DeepMind.
Visualising Convolutional Neural Networks
- Visualized the effect of every filter on the input pixel space of a ConvNet using deconvolutional architecture.
- Created a custom CIFAR-100 image classifier with 67% accuracy for testing the deconvolutional net.
- Implemented un-maxpooling layers and deconvolutional layers based on Matthew Zeiler’s 2010 CVPR paper on Deconvolutional Nets and 2013 paper on Visualizing Neural Networks.
Camera pose estimation using multiple images
- This application visualises the camera position and orientation in the real world. As inputs you need to give in an image whose camera location we need to estimate, the original image and its dimensions.
- Uses pinhole camera model’s intrinc matrix from photogammetry
IoT Cube
- Successfully designed and prototyped a smart IoT hub for wireless controlling of connected devices using motion gestures.
- Used Arduino Nano as the embedded system on the device with accelerometers as actuators.
- Accelerometer readings are sent to a central hub to trigger API calls to IFTTT server to controll smart lights and other devices.
- Fabricated and 3d printed the casing for the cube.
Distributed RESTful WebService
- Designed a distributed RESTful web service that emulated a busy ski-resort’s functionalities with CRUD operations
- Supported horizontal scaling by using AWS EC2 auto scaling groups. Deployed AWS RDS instances for relational data store.
Company rating system using sentiment analysis
- Created a rating system trained on data from Glassdoor reviews to predict company ratings based on textual reviews by using neural networks using Keras, pandas and sklearn.
- Cleaned and processed raw data to remove biases and improve result without the use of recurrent networks.
Every Bit Counts (MHacksX 2017)
- Created a web app that simulated bitcoin trading leveraging real-time bitcoin data using Coinbase API for MHacks X Hackathon 2017.
- Used the Flask micro-framework in Python with SQLite. Used Plot.ly to create statistical visualizations. Created the application in 30hrs with a team of 4.
ArcGIS tool for locating access points for optimum WiFi signal coverage
- Developed an ArcGIS tool for identification of WiFi access points for optimum signal coverage for any given input map image of an area in vector format.
- Collected field data, conducted elevation surveys and gathered satellite imagery of the experimental area.
- Processed all the data using the ArcGIS suite.
- Worked on the programming and scripting of the tool in Python using the arcpy library
Use of remote sensing in water runoff estimation using SCS-CN method
- Used satellite imagery to estimate water runoff from study area (Anandwan) with the help of SCS-CN method in ArcGIS.
- Used Python scripts to compute quantities and generate representative graphs.


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|
1-Wire API for .NET Version 4.00
|
Interface for holding all constants related to Network Adapter communications. More...
Inherited by NetAdapter, NetAdapterHost, and NetAdapterSim.
Static Public Attributes | |
| static int | versionUID = 1 |
| version UID, used to detect incompatible host | |
| static final boolean | BUFFERED_OUTPUT = true |
| Indicates whether or not to buffer the output (probably always true!) | |
| static final int | DEFAULT_PORT = 6161 |
| Default port for NetAdapter TCP/IP connection. | |
| static final String | DEFAULT_SECRET = "Adapter Secret Default" |
| default secret for authentication with the server | |
| static final String | DEFAULT_MULTICAST_GROUP = "<IP_ADDRESS>" |
| Address for Multicast group for NetAdapter Datagram packets. | |
| static final int | DEFAULT_MULTICAST_PORT = 6163 |
| Default port for NetAdapter Datagram packets. | |
| static final Connection | EMPTY_CONNECTION = new Connection() |
| instance for an empty connection, basically it's a NULL object that's safe to synchronize on. | |
Static Package Attributes | |
| static final boolean | DEBUG = false |
| Debug message flag. |
Interface for holding all constants related to Network Adapter communications.
This interface is used by both NetAdapterHost and the NetAdapter. In addition, the common utility class Connection
is defined here.
final Connection EMPTY_CONNECTION = new Connection() [static] |
instance for an empty connection, basically it's a NULL object that's safe to synchronize on.


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Before Change
s1_p.add_query_performance(q11_p)
q12_p = agg.EdwQueryPerformance(Q2_NAME, Q2_PERFORMANCE, METADATA_EMPTY)
s1_p.add_query_performance(q12_p)
b_p.add_suite_performance("suite_seq_1", s1_p)
s2_p = agg.EdwSuitePerformance("suite_name", "suite_seq_2", 2)
q21_p = agg.EdwQueryPerformance(Q1_NAME, Q1_PERFORMANCE, METADATA_EMPTY)
s2_p.add_query_performance(q21_p)
q22_p = agg.EdwQueryPerformance(Q2_NAME, Q2_PERFORMANCE, METADATA_EMPTY)
s2_p.add_query_performance(q22_p)
b_p.add_suite_performance("suite_seq_2", s2_p)
with self.assertRaises(agg.EdwPerformanceAggregationError):
b_p.aggregated_query_metadata(QFAIL_NAME)
def test_aggregated_query_metadata_failing_query(self):
After Change
b_p = agg.EdwBenchmarkPerformance(
total_iterations=2, expected_queries=[Q1_NAME, Q2_NAME])
i1_p = agg.EdwIterationPerformance("1", 2)
s1_p = agg.EdwStreamPerformance(S1_NAME, 2)
q11_p = agg.EdwQueryPerformance(Q1_NAME, Q1_PERFORMANCE, METADATA_EMPTY)
q12_p = agg.EdwQueryPerformance(Q2_NAME, Q2_PERFORMANCE, METADATA_EMPTY)
s1_p.add_query_performance(q11_p)
s1_p.add_query_performance(q12_p)
i1_p.add_stream_performance(s1_p)
b_p.add_iteration_performance(i1_p)
i2_p = agg.EdwIterationPerformance("2", 2)
s2_p = agg.EdwStreamPerformance(S1_NAME, 2)
q21_p = agg.EdwQueryPerformance(Q1_NAME, Q1_PERFORMANCE, METADATA_EMPTY)
q22_p = agg.EdwQueryPerformance(Q2_NAME, Q2_PERFORMANCE, METADATA_EMPTY)
s2_p.add_query_performance(q21_p)
s2_p.add_query_performance(q22_p)
i2_p.add_stream_performance(s2_p)
b_p.add_iteration_performance(i2_p)
with self.assertRaises(agg.EdwPerformanceAggregationError):
b_p.aggregated_query_metadata(QFAIL_NAME)
def test_aggregated_query_metadata_failing_query(self):


Hydrocodone Addiction - Help with Hydrocodone Abuse Withdrawal ...
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Treatment for Herniated or Bulging Discs
How long does hydrocodone stay in the urine? - Ask Me Help Desk
Apr 6, 2007 . Summary. Hydrocodone can stay detectable in your body for up to a week. It depends on the amount given, length of time given, and individual .
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How long does hydrocodone stay in your system? | Addiction Blog
Jul 27, 2011 . Hydrocodone shows up on drug tests. And it can stay in the hair for up to 90 days. Learn more about the length of time hydrocodone stays in the .
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hydrocodone in your system Herniated or Bulging Discs
How Long does Hydrocodone Stay in Your System? - Answers.Ask ...
Hydrocodone stays in your system about four to eight hours, but it still can be detected in your urine for one to six days.... view more.
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How long does hydrocodone stay in your system for a blood test?
Oct 1, 2011 . 1 Answer - Posted in: headache, blood disorders, hydrocodone - Answer: oldschool, You can go to the website I listed for information pertaining .
http://www.drugs.com/answers/i-had-an-old-script-for-hydracodone-i-took-a-460150.html
How Long does Hydrocodone Stay in Your System | Reference.com ...
If you are asking yourself how long does hydrocodone stay in you system, you probably should not be taking it. People who have to take a drug test due to .
http://www.reference.com/motif/health/how-long-does-hydrocodone-stay-in-your-system
Official Impairment Listing for Spinal Disorders
How Long Does Hydrocodone Stay in Your System?
Hydrocodone is a potentially habit-forming semi-synthetic opiod that stays in your system for 3-4 days.
http://medical.yourdictionary.com/articles/how-long-does-hydrocodone-stay-in-your-system.html
- how to downoad windows vista free (narrowing of the spine)
To leave a comment please enable JavaScript in your browser ...
Your body must purge the hydrocodone and all of the associated symptoms from your system so that it can start functioning normally again. It takes only a matter .
http://www.projectknow.com/research/hydrocodone/How long will hydrocodone stay in my system? - Topix
How long will hydrocodone stay in my system? . I guess whether or not they test for it must depend on your job. when I started mine they drug .
http://www.topix.com/forum/drug/vicodin/TK6PCIJ2095O7KI7B
how long does hydrocodone stay in your system for an extensive ...
Aug 10, 2012 . Question - how long does hydrocodone stay in your system for an extensive urine test?. Find the answer to this and other Drug Testing .
http://www.justanswer.com/drug-testing/70k3y-long-does-hydrocodone-stay-system-extensive-urine-test.html
How Long Each Drug Stays In your Body.. Drug Use Chart
. how long marijuana, cocaine and most other drugs actually stay in your system . . Hydrocodone (Opioid Agonist), Vicodin, Lorcet, Norco, Lortab; Vicoprofen, .
http://www.passyourdrugtest.com/timetable.htm
Medical-Vocational Allowance for Herniated Disc
How long does hydrocodone stay in your system when been taken ...
Mar 29, 2010 . 1 Answer - Posted in: hydrocodone - Answer: Usually 2 days for each day you were on it. Drug test? Sorry, see if you ...
http://www.drugs.com/answers/how-long-does-hydrocodone-stay-in-your-system-208410.html
How long does hydrocodone stay in your system
You can flush hydrocodone out of your system, but the breakdown composites of hydrocodone get stuck in the liver and kidneys. If you are worried that you will .
http://wiki.answers.com/Q/How_long_does_hydrocodone_stay_in_your_system
Appealing a Denial of Benefits
How Long Will Hydrocodone Stay In Your System - Doctor answers ...
Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Villaplana and others: WHY ARE YOU ASKING THIS QUESTION? BE HONEST.
https://www.healthtap.com/topics/how-long-will-hydrocodone-stay-in-your-system
How does Hydrocodone help relieve pain? - Askville - Amazon.com
Hydrocodone will stay in your system for about two weeks. If you stop taking it too quickly, you're going to suffer withdrawal symptoms and .
http://askville.amazon.com/Hydrocodone-help-relieve-pain-persists-wean-drug/AnswerViewer.do?requestId=2698301