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Adding two numbers concatenates them instead of calculating the sum
...d as a string, and the + will therefore concatenate rather than add.
When reading supposedly numeric data from a form, you should always push it through parseInt() or parseFloat(), depending on whether you want an integer or a decimal.
Note that neither function truly converts a string to a number...
bundle install fails with SSL certificate verification error
.../ (temporarily updating system part using non-ssl connection).
Now you're ready to use gem update.
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Keep ignored files out of git status
...ged for commit" or "Untracked files" for your file? The former is if you already have file in index and I would need more informations to solve your problem (better create separate question with git messages shown and just post link to it in comment). The later is for files which are not tracked by ...
How do I close all open tabs at once?
...exit Vim. If there are buffers
without a file name, which are readonly or which cannot be
written for another reason, Vim will not quit.
:conf wqa :confirm wqall :conf xa :confirm xall
Write all changed buffers and exit Vim. Bring up a prompt
when some buffer...
How to test if parameters exist in rails
...e].present?
Just because it keeps the params[sym] form so it's easier to read.
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Why there is no ConcurrentHashSet against ConcurrentHashMap
...a "ConcurrentSet" stems from not the API but rather the implementation - thread safety but without a universal lock - multiple concurrent reads for instance.
– Ustaman Sangat
Sep 13 '12 at 16:07
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Canvas is stretched when using CSS but normal with “width” / “height” properties
...canvas element scales based on the canvas width and height. In javascript, read the css width and height and set the canvas width and height to that.
var myCanvas = $('#TheMainCanvas');
myCanvas[0].width = myCanvas.width();
myCanvas[0].height = myCanvas.height();
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Where can I find Android source code online? [closed]
...can view the source code through http://developer.android.com, when you're reading the API there will be a link to the matching source code on GitHub, you just need to add the Android SDK Reference Search Plugin on Chrome.
I blogged about it here:
http://blog.blundellapps.com/add-source-code-links-...
How do I do redo (i.e. “undo undo”) in Vim?
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If I am reading about vi, then my fingers just act on their own. The vi commands do not work on stackoverflow. :-)
– ciscogambo
Jan 17 '14 at 21:17
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The smallest difference between 2 Angles
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Simpler and makes more sense read out loud, though effectively the same thing, first bti figures out the angle, second part makes sure its always the smaller of the 2 possible angles
– Tom J Nowell
Oct 25 '11 at 11:...