| exports.stripComments = function stripComments(toBeStrippedStr){ | |
| //LEXER | |
| function Lexer () { | |
| this.setIndex = false; | |
| this.useNew = false; | |
| for (var i = 0; i < arguments.length; ++i) { | |
| var arg = arguments [i]; | |
| if (arg === Lexer.USE_NEW) { | |
| this.useNew = true; | |
| } |
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
I saw some JS filter setups, so naturally I had to see if I could make a CSS one. Pretty simple.
A Pen by Sam Gordon on CodePen.
There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.
All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.
What do these lines do? Make predictions and then scroll down.
func print(pi *int) { fmt.Println(*pi) }I've heard this before:
What I really get frustrated by is that I cannot wrap
console.*and preserve line numbers
We enabled this in Chrome DevTools via blackboxing a bit ago.
If you blackbox the script file the contains the console log wrapper, the script location shown in the console will be corrected to the original source file and line number. Click, and the full source is looking longingly into your eyes.
Below are many examples of function hoisting behavior in JavaScript. Ones marked as works successfuly print 'hi!' without errors.
To play around with these examples (recommended) clone them with git and execute them with e.g. node a.js
(I may be using incorrect terms below, please forgive me)
Before doing anything else, install those:
| ############################################################################################################ | |
| ### % [ title ] ( src ) ### | |
| video_matcher = /^%\[([^\]]*)\]\s*\(([^)]+)\)/ | |
| #----------------------------------------------------------------------------------------------------------- | |
| parse_video = ( state, silent ) -> | |
| return false if state.src[ state.pos ] isnt '%' | |
| match = video_matcher.exec state.src[ state[ 'pos' ] .. ] | |
| return false unless match? | |
| unless silent |
| [alias] | |
| recent = "!git for-each-ref --sort=-committerdate refs/heads/ --format='%(committerdate:short) %(refname:short)' | head -n 10" | |
| co = checkout | |
| cob = checkout -b | |
| coo = !git fetch && git checkout | |
| br = branch | |
| brd = branch -d | |
| brD = branch -D | |
| merged = branch --merged | |
| st = status |