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How to forward declare a C++ template class?

... This is how you would do it: template<typename Type, typename IDType=typename Type::IDType> class Mappings; template<typename Type, typename IDType> class Mappings { public: ... Type valueFor(const IDType& id) { /...
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How do I update zsh to the latest version?

I recently switched to zsh on my Terminal.app on my OS X machine successfully. The version number of zsh is 4.3.11. 6 Answe...
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Understanding the ngRepeat 'track by' expression

I'm having difficulties understanding how the track by expression of ng-repeat in angularjs works. The documentation is very scarce: http://docs.angularjs.org/api/ng/directive/ngRepeat ...
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jQuery .hasClass() vs .is()

... Update: I committed a test following a comment and four upvotes to very comment. It turns out that what I had said is the correct answer. Here is the result: http://jsperf.com/hasclass-vs-is-so The is is multi-purpose, you ...
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how to add records to has_many :through association in rails

How do I add to the Agents model for Customer ? 3 Answers 3 ...
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Conda: Installing / upgrading directly from github

Can I install/upgrade packages from GitHub using conda ? 4 Answers 4 ...
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jQuery: keyPress Backspace won't fire?

... Use keyup instead of keypress. This gets all the key codes when the user presses something share | improve this answer ...
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AngularJS : What is a factory?

I've been doing a lot of work on Angular.js and overall I find it to be an interesting and powerful framework. 4 Answers ...
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Should the .gradle folder be added to version control?

Gradle creates a folder called .gradle . Should I track it with my version control (i.e. git)? 5 Answers ...
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Providing a default value for an Optional in Swift?

...om for dealing with optionals in Swift seems excessively verbose, if all you want to do is provide a default value in the case where it's nil: ...