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From an array of objects, extract value of a property as array

... Check out Lodash's _.pluck() function or Underscore's _.pluck() function. Both do exactly what you want in a single function call! var result = _.pluck(objArray, 'foo'); Update: _.pluck() has been removed as of Lodash v4.0.0, in favour of _...
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How do I tidy up an HTML file's indentation in VI?

How do I fix the indentation of his huge html files which was all messed up? 11 Answers ...
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Python nonlocal statement

... @Dustin - Actually, if you had class A with an attribute x and a subclass B defined in it, you would refer to x from within B as A.x – Anon Aug 11 '09 at 18:37 ...
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Split Python Flask app into multiple files

...like this: Main.py from flask import Flask from AccountAPI import account_api app = Flask(__name__) app.register_blueprint(account_api) @app.route("/") def hello(): return "Hello World!" if __name__ == "__main__": app.run() AccountAPI.py from flask import Blueprint account_api = Bl...
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How do I create a link using javascript?

....attr('href',desiredLink); a.text(desiredText); $('body').append(a); In all the above examples you can append the anchor to any element, not just to the 'body', and desiredLink is a variable that holds the address that your anchor element points to, and desiredText is a variable that holds the te...
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Writing Unicode text to a text file?

...a out of a Google doc, processing it, and writing it to a file (that eventually I will paste into a Wordpress page). 8 Answ...
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How do I declare class-level properties in Objective-C?

...mething that's equivalent to a static variable? E.g. only one instance for all types of Foo? To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like: // Foo.h @interface Foo { } + (NSDictionary *)dictionary; // Foo.m + (NSDicti...
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Difference Between Cohesion and Coupling

... example of low cohesion at the top looks pretty good, I think you accidentally meant to say "high cohession" – relipse Mar 4 '16 at 14:45 39 ...
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Finding local maxima/minima with Numpy in a 1D numpy array

... If you are looking for all entries in the 1d array a smaller than their neighbors, you can try numpy.r_[True, a[1:] < a[:-1]] & numpy.r_[a[:-1] < a[1:], True] You could also smooth your array before this step using numpy.convolve(). I...
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Installing PG gem on OS X - failure to build native extension

It seems many others have had problems installing the pg gem. None of the solutions posed for others have worked for me. 1...