git clone <repo>
clone the repository specified by ; this is similar to "checkout" in some other version control systems such as Subversion and CVS
Add colors to your ~/.gitconfig file:
// It is important to declare your variables. | |
(function() { | |
var foo = 'Hello, world!'; | |
print(foo); //=> Hello, world! | |
})(); | |
// Because if you don't, the become global variables. | |
(function() { |
// find all elements with a z-index and indicate what they are. | |
// uses css outline which is not supported in IE <8 | |
function contrast(color){ return '#' + | |
(Number('0x'+color.substr(1)).toString(10) > 0xffffff/2 ? '000000' : 'ffffff'); | |
} | |
jQuery('*') | |
.filter(function(){ return $(this).css('zIndex') !== 'auto'; }) | |
.each(function(){ |
<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Box Shadow</title> | |
<style> | |
.box { | |
height: 150px; | |
width: 300px; | |
margin: 20px; |
git branch -m old_branch new_branch # Rename branch locally | |
git push origin :old_branch # Delete the old branch | |
git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote |
Because pointers can be ugh
To understand a pointer, let's review "regular" variables first. If you're familiar with a programming language without pointers like JavaScript, this is what you think when you hear "variable".
When declaring a variable by identifier (or name), the variable is synonymous with its value.
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
import { FieldProps } from 'formik' | |
import React from 'react' | |
import Select, { Option, ReactSelectProps } from 'react-select' | |
export const SelectField: React.SFC<ReactSelectProps & FieldProps> = ({ | |
options, | |
field, | |
form, | |
}) => ( | |
<Select |