Service Worker - offline support for the web
Progressive apps - high-res icon, splash screen, no URL bar, etc.
On Tue Oct 27, 2015, history.state.gov began buckling under load, intermittently issuing 500 errors. Nginx's error log was sprinkled with the following errors:
2015/10/27 21:48:36 [crit] 2475#0: accept4() failed (24: Too many open files)
2015/10/27 21:48:36 [alert] 2475#0: *7163915 socket() failed (24: Too many open files) while connecting to upstream...
An article at http://www.cyberciti.biz/faq/linux-unix-nginx-too-many-open-files/ provided directions that mostly worked. Below are the steps we followed. The steps that diverged from the article's directions are marked with an *.
su to run ulimit on the nginx account, use ps aux | grep nginx to locate nginx's process IDs. Then query each process's file handle limits using cat /proc/pid/limits (where pid is the process id retrieved from ps). (Note: sudo may be necessary on your system for the cat command here, depending on your system.)fs.file-max = 70000 to /etc/sysctl.conf| #!/bin/sh | |
| # Uncomment the following two lines for normal desktop: | |
| # unset SESSION_MANAGER | |
| # exec /etc/X11/xinit/xinitrc | |
| [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup | |
| [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources | |
| xsetroot -solid grey | |
| vncconfig -iconic & |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| { | |
| "package": "Cordova", | |
| "package-version": "5.1.1", | |
| "revision": 1, | |
| "output": [ | |
| { | |
| "category": "iOS", | |
| "description": "iOS icons", | |
| "alpha": false, | |
| "path": "Resources/icons", |
| #!/usr/bin/sudo sh | |
| ## ruby_revealer.sh -- decrypt obfuscated GHE .rb files. 2.0.0 to 2.3.1+. | |
| ## From `strings ruby_concealer.so`: | |
| ## | |
| ## > This obfuscation is intended to discourage GitHub Enterprise customers | |
| ## > from making modifications to the VM. | |
| ## | |
| ## Well, good, as long as its not intended to discourage *me* from doing this! |
Get Git log in JSON format
git log --pretty=format:'{%n "commit": "%H",%n "abbreviated_commit": "%h",%n "tree": "%T",%n "abbreviated_tree": "%t",%n "parent": "%P",%n "abbreviated_parent": "%p",%n "refs": "%D",%n "encoding": "%e",%n "subject": "%s",%n "sanitized_subject_line": "%f",%n "body": "%b",%n "commit_notes": "%N",%n "verification_flag": "%G?",%n "signer": "%GS",%n "signer_key": "%GK",%n "author": {%n "name": "%aN",%n "email": "%aE",%n "date": "%aD"%n },%n "commiter": {%n "name": "%cN",%n "email": "%cE",%n "date": "%cD"%n }%n},'The only information that aren't fetched are:
%B: raw body (unwrapped subject and body)%GG: raw verification message from GPG for a signed commit
OS X 10.11, aka El Capitan, comes with a new system font for Chinese users, named PingFang, it includes 6 weights for both Simplified and Traditional Chinese. The same font also appear on iOS 9 as the default UI font, though Apple didn't mention it explicitly.
If you are in Apple Developer Program (costs 99 USD a year), then you can get them now at their developer resource site, otherwise you can wait for their public beta to come out in July or wait for the public release this fall (a free upgrade like previous release).
Or you can get PingFang.ttc from your developer friends, though you are probably violating its font license one way or another, but I am not a lawyer so freedom to you.
I fell in love with CoffeeScript a couple of years ago. Javascript has always seemed something of an interesting curiosity to me and I was happy to see the meteoric rise of Node.js, but coming from a background of Python I really preferred a cleaner syntax.
In any fast moving community it is inevitable that things will change, and so today we see a big shift toward ES6, the new version of Javascript. It incorporates a handful of the nicer features from CoffeeScript and is usable today through tools like Babel. Here are some of my thoughts and issues on moving away from CoffeeScript in favor of ES6.
While reading I suggest keeping open a tab to Babel's learning ES6 page. The examples there are great.
Holy punctuation, Batman! Say goodbye to your whitespace and hello to parenthesis, curly braces, and semicolons again. Even with the advanced ES6 syntax you'll find yourself writing a lot more punctuatio