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How to compare UIColors?
... var l_blue = CGFloat(0); var l_alpha = CGFloat(0)
guard l.getRed(&l_red, green: &l_green, blue: &l_blue, alpha: &l_alpha) else { return false }
var r_red = CGFloat(0); var r_green = CGFloat(0); var r_blue = CGFloat(0); var r_alpha = CGFloat(0)
guard r.getRed(...
Why shouldn't `'` be used to escape single quotes?
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" is on the official list of valid HTML 4 entities, but ' is not.
From C.16. The Named Character Reference ':
The named character reference '
(the apostrophe, U+0027) was
introduced in XML 1...
Coding Style Guide for node.js apps? [closed]
...=
Always declare your variables with var in the appropriate scope - don't fallback to the global scope
Wrap your app in a closure (function(){})() if you plan on releasing code that runs server-side as well as in the browser
Callbacks should take err as the first argument and if they themselves take...
Should I store entire objects, or pointers to objects in containers?
...intees. The custom allocator has to take care of the cache locality, for example using placement new (see en.wikipedia.org/wiki/Placement_syntax#Custom_allocators).
– amit
Feb 27 '11 at 11:34
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Is a `=default` move constructor equivalent to a member-wise move constructor?
...
Yes both are the same.
But
struct Example {
int a, b;
Example(int mA, int mB) : a{mA}, b{mB} { }
Example(const Example& mE) = default;
Example(Example&& mE) = default;
Example& operator=(const Exa...
Postgres dump of only parts of tables for a dev snapshot
...d this approach in the past and it only took something like 20-30 lines of PHP.
Modify pg_dump so it accepts a condition along with the -t switch when dumping a single table.
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Using the star sign in grep
...will match a string that contains abc followed by def with something optionally in between.
Update based on a comment:
* in a regular expression is not exactly the same as * in the console. In the console, * is part of a glob construct, and just acts as a wildcard (for instance ls *.log will list ...
Unicode character for “X” cancel / close?
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✖ works really well. The HTML code is ✖.
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Setting focus on an HTML input box on page load
...nload="focusOnInput()">
<form name="passwordForm" action="verify.php" method="post">
<input name="passwordInput" type="password" />
</form>
</body>
And then in your JavaScript:
function focusOnInput() {
document.forms["passwordForm"]["passwordInput"]...
How to detect IE11?
...e == 'Microsoft Internet Explorer') || ((navigator.appName == 'Netscape') && (new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})").exec(navigator.userAgent) != null))); }
– rg89
Nov 26 '13 at 20:59
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