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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL

... A tweet from DHH earlier. Rake .9.0 breaks Rails and several other things, you need to: gem "rake", "0.8.7" in your Gemfile. share | improve this answer ...
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CSS: bolding some text without changing its container's size

...h a little compromise, I used text-shadow instead. li:hover {text-shadow:0px 0px 1px black;} Here's a working example: body { font-family: segoe ui; } ul li { display: inline-block; border-left: 1px solid silver; padding: 5px } .textshadow :hover { text-shadow: 0px 0p...
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Permutations in JavaScript?

... 108 If you notice, the code actually splits the chars into an array prior to do any permutation, so...
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HSL to RGB color conversion

... 308 Garry Tan posted a Javascript solution on his blog (which he attributes to a now defunct mjijac...
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Fast Bitmap Blur For Android SDK

... I'm looping through the pixels of an image to blur it. This takes about 30 seconds on a 640x480 image. 19 Answers ...
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How to detect a Christmas Tree? [closed]

... 10 Answers 10 Active ...
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Determine the data types of a data frame's columns

... 220 Your best bet to start is to use ?str(). To explore some examples, let's make some data: set...
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UITableView - scroll to the top

...e top. But I cannot guarantee that the first object is going to be section 0, row 0. May be that my table view will start from section number 5. ...
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Sorting arrays in NumPy by column

... copy: In [1]: import numpy as np In [2]: a = np.array([[1,2,3],[4,5,6],[0,0,1]]) In [3]: np.sort(a.view('i8,i8,i8'), order=['f1'], axis=0).view(np.int) Out[3]: array([[0, 0, 1], [1, 2, 3], [4, 5, 6]]) To sort it in-place: In [6]: a.view('i8,i8,i8').sort(order=['f1'], axis=0) #&...
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CocoaPods - use specific pod version

...rsion, 1.2.1) and saw that these didn't exist in the previous version (1.2.0). 4 Answers ...