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Linq to Entities join vs groupjoin
...ve web searched but I still cant find a simple answer. Can someone please explain (in simple English) what a GroupJoin is? How is it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice.
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iPhone App Icons - Exact Radius?
...rying to create the icon for my iPhone app, but don't know how to get the exact radius that the iPhone's icons use. I've searched and searched for a tutorial or a template but can't find one.
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What does ||= (or-equals) mean in Ruby?
...ted assignments" of the Ruby Language Draft Specification.
As a first approximation,
a ||= b
is equivalent to
a || a = b
and not equivalent to
a = a || b
However, that is only a first approximation, especially if a is undefined. The semantics also differ depending on whether it is a simple variab...
When serving JavaScript files, is it better to use the application/javascript or application/x-javas
The whole question fits in the title. And to add some context: I'm not asking what is the best according to what the specs are saying, but rather what works the best given the mix of browsers deployed nowadays.
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How to check if an element does NOT have a specific class?
How do I check if there isn't a class. For example, I know how to check to see if it has the class "test", but how do I check to see if it doesn't have the class "test"?
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Most efficient way to concatenate strings?
...thod is much better than using the + operator. But I've found that, when executing 1000 concatenations or less, String.Join() is even more efficient than StringBuilder.
StringBuilder sb = new StringBuilder();
sb.Append(someString);
The only problem with String.Join is that you have to concatenat...
Handling JSON Post Request in Go
...self that Go has better designed libraries than this, but I can't find an example of Go handling a POST request of JSON data. They are all form POSTs.
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C++ equivalent of Java's toString?
...t; ")";
}
This way you can output instances of your class on streams:
A x = ...;
std::cout << x << std::endl;
In case your operator<< wants to print out internals of class A and really needs access to its private and protected members you could also declare it as a friend func...
Can a constructor in Java be private?
...e it private, but then your remaining constructors delegate to it.
As an example of delegating constructors, the following class allows you to save a value and a type, but it only lets you do it for a subset of types, so making the general constructor private is needed to ensure that only the permi...