Author: Chris Lattner
- Proposal: SE-XXXX
- Authors: Chris Lattner, Joe Groff
Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.
This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.
/*<?php | |
//*/public class PhpJava { public static void main(String[] args) { System.out.printf("/*%s", | |
//\u000A\u002F\u002A | |
class PhpJava { | |
static function main() { | |
echo(//\u000A\u002A\u002F | |
"Hello World!"); | |
}} | |
//\u000A\u002F\u002A | |
PhpJava::main(); |
Why do compilers even bother with exploiting undefinedness signed overflow? And what are those | |
mysterious cases where it helps? | |
A lot of people (myself included) are against transforms that aggressively exploit undefined behavior, but | |
I think it's useful to know what compiler writers are accomplishing by this. | |
TL;DR: C doesn't work very well if int!=register width, but (for backwards compat) int is 32-bit on all | |
major 64-bit targets, and this causes quite hairy problems for code generation and optimization in some | |
fairly common cases. The signed overflow UB exploitation is an attempt to work around this. |
API | Status Codes |
---|---|
[Twitter][tw] | 200, 304, 400, 401, 403, 404, 406, 410, 420, 422, 429, 500, 502, 503, 504 |
[Stripe][stripe] | 200, 400, 401, 402, 404, 429, 500, 502, 503, 504 |
[Github][gh] | 200, 400, 422, 301, 302, 304, 307, 401, 403 |
[Pagerduty][pd] | 200, 201, 204, 400, 401, 403, 404, 408, 500 |
[NewRelic Plugins][nr] | 200, 400, 403, 404, 405, 413, 500, 502, 503, 503 |
[Etsy][etsy] | 200, 201, 400, 403, 404, 500, 503 |
[Dropbox][db] | 200, 400, 401, 403, 404, 405, 429, 503, 507 |
PS: If you liked this talk or like this concept, let's chat about iOS development at Stitch Fix! #shamelessplug
Speaker: David Abrahams. (Tech lead for Swift standard library)
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"Crusty" is an old-school programmer who doesn't trust IDE's, debuggers, programming fads. He's cynical, grumpy.
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OOP has been around since the 1970's. It's not actually new.
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Classes are Awesome
- Encapsulation
- Access control
- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath { | |
UITableViewRowAction *moreAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"More" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath){ | |
// maybe show an action sheet with more options | |
[self.tableView setEditing:NO]; | |
}]; | |
moreAction.backgroundColor = [UIColor lightGrayColor]; | |
UITableViewRowAction *blurAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Blur" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath){ | |
[self.tableView setEditing:NO]; | |
}]; |
#####Gibson Security (aka GibSec, GibsonSec) statement on the latest snapchat blog post.
Follow our twitter (@GibsonSec) or email us at [email protected]
In your blog post, you made a couple statements and you left a few things out, we want (on the behalf of the Snapchat user base) a few things cleared up:
A security group first published a report about potential Find Friends abuse in August 2013. Shortly thereafter, we implemented practices like rate limiting aimed at addressing these concerns. On Christmas Eve, that same group publicly documented our API, making it easier for individuals to abuse our service and violate our Terms of Use.
But is the exploit patched? I wouldn’t want to test, because I might get told “abusing” the service. A phone number, real name (most snapchat usernames i’ve seen have a full name in them) and location (whitepages and the area code) can get you pretty far when yo
Quite a few more related to maths here because I suck at maths and need as much help as I can get.
- Essential Math for Games Programmers - http://www.essentialmath.com/tutorial.htm
- Learning Modern 3D Graphics Programming - http://arcsynthesis.org/gltut/
- 2D and 3D graphics programming techniques from scratch - http://www.scratchapixel.com
- Cheating to make great graphics - http://simonschreibt.de/game-art-tricks/
- Game programming patterns - http://gameprogrammingpatterns.com
- GPU Gems books at Nvidia developer site: GPU Gems 1, GPU Gems 2, GPU Gems 3