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When to use enumerateObjectsUsingBlock vs. for
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Ultimately, use whichever pattern you want to use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingB...
How to center text vertically with a large font-awesome icon?
Lets say I have a bootstrap button with a font-awesome icon and some text:
14 Answers
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Stop setInterval call in JavaScript
...ater */
clearInterval(refreshIntervalId);
See the docs for setInterval() and clearInterval().
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Getting activity from context in android
...ve a Context in the layout, but you will know it is actually your Activity and you can cast it so that you have what you need:
Activity activity = (Activity) context;
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Regex - Does not contain certain Characters
... this means, beginning of string, then one or more of anything except < and >, then the end of the string.
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Trust Anchor not found for Android SSL Connection
I am trying to connect to an IIS6 box running a godaddy 256bit SSL cert, and I am getting the error :
17 Answers
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Stop UIWebView from “bouncing” vertically?
...ean when a user touches their iphone screen, drags their finger downwards, and the webview shows a blank spot above the web page I had loaded?
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String vs. StringBuilder
I understand the difference between String and StringBuilder ( StringBuilder being mutable) but is there a large performance difference between the two?
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Using 'return' in a Ruby block
... method, that's why you have LocalJumpError
break returns value from block and ends its call. If your block was called by yield or .call, then break breaks from this iterator too
next returns value from block and ends its call. If your block was called by yield or .call, then next returns value to l...
How to check if an object is an array?
...Array.isArray(obj)
(Supported by Chrome 5, Firefox 4.0, IE 9, Opera 10.5 and Safari 5)
For backward compatibility you can add the following
# only implement if no native implementation is available
if (typeof Array.isArray === 'undefined') {
Array.isArray = function(obj) {
return Object.pr...