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Why does .NET foreach loop throw NullRefException when collection is null?
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@kjbartel beat you to this by over a year (at " stackoverflow.com/a/32134295/401246 "). ;) This is the best solution, because it doesn't: a) involve performance degradation of (even when not null) generalizing the whole loop to the LCD of Enumerable ...
Centering the pagination in bootstrap
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I don't know when drive-by downvoting became cool, but your first answer works for me so have an upvote.
– David Harbage
Nov 27 '13 at 1:20
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form serialize javascript (no framework)
...lement the serialization function yourself. (though at a weight of 1.2 kilobytes, why not use it?)
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No route matches “/users/sign_out” devise rails 3
...nk a DELETE RESTful call requires an html attribute data-method = "delete" by using the rails code = link_to('Logout', destroy_user_session_path, :method => :delete).
However, if you do not have the gem jquery-ujs installed or are not calling the resulting javascript in your application.html vi...
uint8_t can't be printed with cout
...nt8_t is just a type def of unsigned char, unsigned char itself is handled by ostream just like char and prints its ASCII value.
– Harsh
May 16 at 8:55
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Base64 encoding and decoding in client-side Javascript
... to convert the object to utf8.
// We can make it convert to other formats by passing the encoding type to toString().
var s = b.toString('base64');
And here is how you decode base64 encoded strings:
var b = new Buffer('SmF2YVNjcmlwdA==', 'base64')
var s = b.toString();
with Dojo.js
To encode an ...
Importing Maven project into Eclipse
...during years and was very happy with it (and very unsatisfied at this time by Eclipse plugins for Maven like m2eclipse).
The m2eclipse plugin is one of the Eclipse plugins for Maven. It's actually the first and most mature of the projects aimed at integrating Maven within the Eclipse IDE (this has...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...first key part of using Rotation Detector is to associate the canvas to it by calling the method MyRotationDetector1. AddHandlerToCanvas, which configures the detector to listen the finger movements on Canvas1. This step should be done when screen is initialized.
The main feature of the RotationDet...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...first key part of using Rotation Detector is to associate the canvas to it by calling the method MyRotationDetector1. AddHandlerToCanvas, which configures the detector to listen the finger movements on Canvas1. This step should be done when screen is initialized.
The main feature of the RotationDet...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...first key part of using Rotation Detector is to associate the canvas to it by calling the method MyRotationDetector1. AddHandlerToCanvas, which configures the detector to listen the finger movements on Canvas1. This step should be done when screen is initialized.
The main feature of the RotationDet...