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How do I provide a username and password when running “git clone git@remote.git”?
...counts at a place like GitHub or Heroku, you'll have multiple ssh keys (at least one per account). To pick which account you want to log in as, you have to tell ssh which private key to use.
For example, suppose you had two GitHub accounts: foo and bar. Your ssh key for foo is ~/.ssh/foo_github_...
CSS3 background image transition
...icable jump when the z-index switches in the middle of the transition. At least on Chrome 35, you can shift the timing of the z-index switch and clean up the transition by changing the property value to "all 4s ease, z-index 1ms" (jsfiddle.net/eD2zL/330).
– Neal Stublen
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When to use symbols instead of strings in Ruby?
If there are at least two instances of the same string in my script, should I instead use a symbol?
4 Answers
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in_array multiple values
... values to say that $haystack is a superset of $target.
To verify that at least one value in $target is also in $haystack, you can do this check:
if(count(array_intersect($haystack, $target)) > 0){
// at least one of $target is in $haystack
}
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In an array of objects, fastest way to find the index of an object whose attributes match a search
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This answer is at least 3.5 times faster than the accepted answer above. Using var elementPos = array.map(function(x) {return x.id; }).indexOf(idYourAreLookingFor); it took 0.03500000002532033 milliseconds Using [{id:1},{id:2},{id:3},{id:4...
Are unused CSS images downloaded?
...
No, they are not downloaded, not at least in Firefox, IE8 and Chrome.
An easy way to test this:
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.nonexistent {
background: url('index.php?foo');
...
How to drop a table if it exists?
... 'dbo')
drop table dbo.Scores;
Most modern RDBMS servers provide, at least, basic INFORMATION_SCHEMA support, including: MySQL, Postgres, Oracle, IBM DB2, and Microsoft SQL Server 7.0 (and greater).
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Add a column to a table, if it does not already exist
...r to only perform the minimum reads necessary to evaluate the EXISTS... at least in SQL Server. Other DB engines may have a more or less efficient query optimizer.
– Kenneth Cochran
Jul 21 '15 at 16:56
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How to handle initializing and rendering subviews in Backbone.js?
...lections. How you handle the collection is really up to you, but you'll at least need to be listening to the collection events and deciding how you want to render (append/remove, or just re-render the whole block). I personally like to append new views and remove old ones, not re-render the whole vi...
Multi-gradient shapes
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I don't think you can do this in XML (at least not in Android), but I've found a good solution posted here that looks like it'd be a great help!
ShapeDrawable.ShaderFactory sf = new ShapeDrawable.ShaderFactory() {
@Override
public Shader resize(int width, i...