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Twitter API returns error 215, Bad Authentication Data

I am trying to call following Twitter's API to get a list of followers for a user. 15 Answers ...
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Hidden features of Perl?

What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work? ...
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Why does HTML5 form-validation allow emails without a dot?

... I wonder when the last time someone actually sent an email to localhost! – Matthew Lock May 19 '17 at 3:14 2 ...
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How to use pull to refresh in Swift?

...lf.tableView.reloadData() and self.refreshControl?.endRefreshing() in the callback? – Qian Chen Dec 6 '15 at 19:58 Exa...
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What is the curiously recurring template pattern (CRTP)?

... curiously recurring, isn't it? :) Now, what does this give you? This actually gives the X template the ability to be a base class for its specializations. For example, you could make a generic singleton class (simplified version) like this template <class ActualClass> class Singleton { ...
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Check if a value is within a range of numbers

...u're asking a question about numeric comparisons, so regular expressions really have nothing to do with the issue. You don't need "multiple if" statements to do it, either: if (x >= 0.001 && x <= 0.009) { // something } You could write yourself a "between()" function: function b...
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JavaScript listener, “keypress” doesn't detect backspace?

...s invoked only for character (printable) keys, KeyDown event is raised for all including nonprintable such as Control, Shift, Alt, BackSpace, etc. UPDATE: The keypress event is fired when a key is pressed down and that key normally produces a character value Reference. ...
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Android OpenGL ES and 2D

...ur canvas with the proper GL flags for 2D (sprite) rendering. You should really take a look at SpriteMethodTest by the same author of replica island: http://code.google.com/p/apps-for-android/source/browse/trunk/SpriteMethodTest See this question where I posted my own code: Using OpenGL to replace ...
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Python None comparison: should I use “is” or ==?

...ject None, so when you do my_var is None, you're checking whether they actually are the same object (not just equivalent objects) In other words, == is a check for equivalence (which is defined from object to object) whereas is checks for object identity: lst = [1,2,3] lst == lst[:] # This is Tr...
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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...