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What's the difference between :: (double colon) and -> (arrow) in PHP?
...to access instance members).
In general, :: is used for scope resolution, and it may have either a class name, parent, self, or (in PHP 5.3) static to its left. parent refers to the scope of the superclass of the class where it's used; self refers to the scope of the class where it's used; static r...
Properties file in python (similar to Java Properties)
... let me add again that this is not the same. I cant speak for Java or Py3, and maybe it works for simple key/values. But the syntax for string interpolation is different. This solution provides Python formatting, ie. %(string)s while (for e.g. Ant) I would use ${string}. pymotw.com/2/ConfigParser
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How big can a user agent string get?
...pt, throwing 413 Entity Too Large if it exceeds.
Depending on web-server and their settings these limits vary from 4KB to 64KB (total for all headers).
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Which is better: … or …
...ype attribute at all? If you're using HTML5, no. Otherwise, yes. HTML 4.01 and XHTML 1.0 specifies the type attribute as required while HTML5 has it as optional, defaulting to text/javascript. HTML5 is now widely implemented, so if you use the HTML5 doctype, <script>...</script> is valid...
Is there a limit to the length of a GET request? [duplicate]
... place any a priori limit on the length of
a URI. Servers MUST be able to handle the URI of any resource they
serve, and SHOULD be able to handle URIs of unbounded length if they
provide GET-based forms that could generate such URIs. A server
SHOULD return 414 (Request-URI Too Long) status if a URI ...
Global and local variables in R
I am a newbie for R, and I am quite confused with the usage of local and global variables in R.
3 Answers
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Difference between $(this) and event.target?
I'm new to jQuery, and was making tabbed panels, following the tutorial in JavaScript and jQuery : The Missing Manual , there's that first line when the author does this :
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How can I use jQuery in Greasemonkey scripts in Google Chrome?
...ript on Google Chrome.
// ==/UserScript==
// a function that loads jQuery and calls a callback function when jQuery has finished loading
function addJQuery(callback) {
var script = document.createElement("script");
script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min....
What is the javascript MIME type for the type attribute of a script tag? [duplicate]
...
This is a common mistake. The MIME type for javascript wasn't standardized for years. It's now officially: "application/javascript".
The real kicker here is that most browsers won't use that attribute anyway, at least not in the case of the script tag. They actually peek inside the pac...
How do I know which version of Javascript I'm using?
...r versions)
Mozilla progresses with every dot release (they maintain the standard so that's not surprising)
Firefox 4 is on JavaScript 1.8.5
The other big off-the-beaten-path one is IE9 - it implements ECMAScript 5, but doesn't implement all the features of JavaScript 1.8.5 (not sure what they're c...