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What is a “context bound” in Scala?
One of the new features of Scala 2.8 are context bounds. What is a context bound and where is it useful?
4 Answers
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how do you push only some of your local git commits?
...master~3
In the case of git-svn, you could also use HEAD~3, since it is expecting a commit. In the case of straight git, you need to use the branch name because HEAD isn't evaluated properly in the refspec.
You could also take a longer approach of:
$ git checkout -b tocommit HEAD~3
$ git push or...
How to implement Rate It feature in Android App
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I implemented this a while back, to some extent. It is impossible to know whether or not a user has rated an app, to prevent ratings from becoming a currency (some developers might add an option like "Rate this app and get so and so in the app for free").
The class...
ASP.NET MVC View Engine Comparison
...w Engines (Community Wiki)
Since a comprehensive list does not appear to exist, let's start one here on SO. This can be of great value to the ASP.NET MVC community if people add their experience (esp. anyone who contributed to one of these). Anything implementing IViewEngine (e.g. VirtualPathProvi...
What are the rules about using an underscore in a C++ identifier?
It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use m_foo . I've also seen myFoo occasionally.
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To underscore or to not to underscore, that is the question
Are there any problems with not prefixing private fields with an underscore in C# if the binary version is going to be consumed by other framework languages? For example since C# is case-sensitive you can call a field "foo" and the public property "Foo" and it works fine.
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Can dplyr package be used for conditional mutating?
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Added - arithmetic/na_if If the values are numeric and the conditions (except for the default value of NA at the end) are mutually exclusive, as is the case in the question, then we can use an arithmetic expression such that each term is multiplied by the desired result using na_if at the end to ...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...n Interface Builder is a bit unclear as to what 'Delta' means in this context, the code contained in the .xib file that corresponds to this feature is a bit more clear:
<inset key="insetFor6xAndEarlier" minX="-50" minY="-100" maxX="-50" maxY="300"/>
The key name insetFor6xAndEarlier expl...
Views vs Components in Ember.js
...ipt? You can't do this actually with a Ember.View.
Ember.Component
That's exactly what components let you do. In fact, it's such a good idea that the W3C is currently working on the Custom Elements spec.
Ember's implementation of components tries to be as closely to the Web Components specification ...
How can I profile Python code line-by-line?
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You could also use pprofile(pypi).
If you want to profile the entire execution, it does not require source code modification.
You can also profile a subset of a larger program in two ways:
toggle profiling when reaching a specific point in the code, such as:
import pprofile
profiler = pprof...