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Why is '+' not understood by Python sets?
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Python sets don't have an implementation for the + operator.
You can use | for set union and & for set intersection.
Sets do implement - as set difference. You can also use ^ for symmetric set difference (i.e., it will return a new set with only the objects tha...
Why does .NET foreach loop throw NullRefException when collection is null?
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Well, the short answer is "because that's the way the compiler designers designed it." Realistically, though, your collection object is null, so there's no way for the compiler to get the enumerator to loop through the collection.
If y...
Where are static methods and static variables stored in Java?
For example:
9 Answers
9
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Does JavaScript have the interface type (such as Java's 'interface')?
... you can create an object with the proper methods, which would make it conform to the interface, and then undefine all the stuff that made it conform. It'd be so easy to subvert the type system -- even accidentally! -- that it wouldn't be worth it to try and make a type system in the first place.
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Stash changes while keeping the changes in the working directory in Git
...re a git stash command that stashes your changes, but keeps them in the working directory too? So basically a git stash; git stash apply in one step?
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What is the command to exit a Console application in C#?
What is the command in C# for exit a Console Application?
4 Answers
4
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A regex to match a substring that isn't followed by a certain other substring
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.* any character except \n (0 or more times
(matching the most amount possible))
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bar 'bar'
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Session timeout in ASP.NET
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Are you using Forms authentication?
Forms authentication uses it own value for timeout (30 min. by default). A forms authentication timeout will send the user to the login page with the session still active. This may look like the behavior...
Does Haskell require a garbage collector?
...As others have already pointed out, Haskell requires automatic, dynamic memory management: automatic memory management is necessary because manual memory management is unsafe; dynamic memory management is necessary because for some programs, the lifetime of an object can only be determined at runtim...
JavaScript curry: what are the practical applications?
...e where currying—by itself—is useful in JavaScript; it is a technique for converting function calls with multiple arguments into chains of function calls with a single argument for each call, but JavaScript supports multiple arguments in a single function call.
In JavaScript—and I assume mos...