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What is the (function() { } )() construct in JavaScript?
...tion expression. Then look at the last pair (function(){})();, this is normally added to an expression to call a function; in this case, our prior expression.
This pattern is often used when trying to avoid polluting the global namespace, because all the variables used inside the IIFE (like in any ...
Loop through properties in JavaScript object with Lodash
.../lodash.com/docs#forOwn
Note that forOwn checks hasOwnProperty, as you usually need to do when looping over an object's properties. forIn does not do this check.
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How to get function parameter names/values dynamically?
Is there a way to get the function parameter names of a function dynamically?
31 Answers
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What's an easy way to read random line from a file in Unix command line?
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You can use shuf:
shuf -n 1 $FILE
There is also a utility called rl. In Debian it's in the randomize-lines package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't exist when it was cr...
Is there a way to include commas in CSV columns without breaking the formatting?
...distinguishing which should be used (for generate/interpret). I discussed all the methods to escape characters (newlines in that case, but same basic premise) in another post. Basically it comes down to using a CSV generation/escaping process for the intended users, and hoping the rest don't mind....
How to get GET (query string) variables in Express.js on Node.js?
...eJS, you can access req.url and the builtin url module to url.parse it manually:
var url = require('url');
var url_parts = url.parse(request.url, true);
var query = url_parts.query;
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Can't access object property, even though it shows up in a console log
...g)) and you will see the keys, or the state of the object at the time you called console.log.
You will (usually) find the keys are being added after your console.log call.
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How to read and write INI file with Python3?
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The standard ConfigParser normally requires access via config['section_name']['key'], which is no fun. A little modification can deliver attribute access:
class AttrDict(dict):
def __init__(self, *args, **kwargs):
super(AttrDict, self).__init...
Convert XML to JSON (and back) using Javascript
...cts) and vice versa javascript conversion functions. The library is very small and doesn't require any other additional libraries.
API functions
new X2JS() - to create your instance to access all library functionality. Also you could specify optional configuration options here
X2JS.xml2json - Conve...
Composer killed while updating
I got a problem, I tried to install a new package to my Laravel 4 project.
But when I run php composer.phar update I get this:
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