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Get the first key name of a javascript object [duplicate]
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In Javascript you can do the following:
Object.keys(ahash)[0];
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Disable cross domain web security in Firefox
In Firefox, how do I do the equivalent of --disable-web-security in Chrome. This has been posted a lot, but never a true answer. Most are links to add-ons (some of which don't work in the latest Firefox or don't work at all) and "you just need to enable support on the server".
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Java Name Hiding: The Hard Way
...bject isn't involved in invocation of static methods).
((net.foo.X) null).doSomething();
This has the benefits of
being side-effect free (a problem with instantiating net.foo.X),
not requiring renaming of anything (so you can give the method in B the name you want it to have; that's why a impor...
Why Doesn't C# Allow Static Methods to Implement an Interface?
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Assuming you are asking why you can't do this:
public interface IFoo {
void Bar();
}
public class Foo: IFoo {
public static void Bar() {}
}
This doesn't make sense to me, semantically. Methods specified on an interface should be there to specify the ...
What is git actually doing when it says it is “resolving deltas”?
...ses delta encoding to store some of the objects in packfiles. However, you don't want to have to play back every single change ever on a given file in order to get the current version, so Git also has occasional snapshots of the file contents stored as well. "Resolving deltas" is the step that deals...
How to check a not-defined variable in JavaScript
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In JavaScript, null is an object. There's another value for things that don't exist, undefined. The DOM returns null for almost all cases where it fails to find some structure in the document, but in JavaScript itself undefined is the value used.
Second, no, there is not a direct equivalent. If ...
How to get Twitter-Bootstrap navigation to show active link?
I'm not understanding how Twitter Bootstrap does active links for the navigation. If I have a regular navigation like this (with ruby on rails linking):
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Search for string and get count in vi editor
...is will delete all the lines with pattern, and report how many deleted. Undo to get them back after.
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How to open a URL in a new Tab using JavaScript or jQuery? [duplicate]
How to open a URL in new tab instead of new window programatically?
6 Answers
6
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Why not infer template parameter from constructor?
...compiler infer template parameters from class constructors, much as it can do from function parameters? For example, why couldn't the following code be valid:
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