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best way to get the key of a key/value javascript object
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If you want to get all keys, ECMAScript 5 introduced Object.keys. This is only supported by newer browsers but the MDC documentation provides an alternative implementation (which also uses for...in btw):
if(!Object.keys) Object.keys = function...
How to tell PowerShell to wait for each command to end before starting the next?
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Normally, for internal commands PowerShell does wait before starting the next command. One exception to this rule is external Windows subsystem based EXE. The first trick is to pipeline to Out-Null like so:
Notepad.exe | Out-N...
Nested attributes unpermitted parameters
... Person . I want a form that can create the Bill and its children Dues all in one page. I am trying to create a form using nested attributes, similar to ones in this Railscast .
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How can I selectively merge or pick changes from another branch in Git?
I'm using Git on a new project that has two parallel -- but currently experimental -- development branches:
25 Answers
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Are there strongly-typed collections in Objective-C?
...hich means that the runtime doesn't care about the type of an object since all objects can receive messages. When you add an object to a built-in collection, they are just treated as if they were type id. But don't worry, just send messages to those objects like normal; it will work fine (unless of ...
Parsing domain from a URL
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echo $parse['host']; // prints 'google.com'
parse_url doesn't handle really badly mangled urls very well, but is fine if you generally expect decent urls.
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How to create an AVD for Android 4.0
...nload the AVD Manager that is external to eclipse and says you have it installed, you have to go into eclipse with the AVD Plugin and re-install it as well. Have to 2 it twice. I ran into this error when going through the setup steps even though I had the ARM EABI installed external from eclipse.
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Correct way to close nested streams and writers in Java [duplicate]
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I usually do the following. First, define a template-method based class to deal with the try/catch mess
import java.io.Closeable;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
public abstract cl...
How to check if a number is a power of 2
...nd only if both its operands are true.
Now let's take a look at how this all plays out:
The function returns boolean (true / false) and accepts one incoming parameter of type unsigned long (x, in this case). Let us for the sake of simplicity assume that someone has passed the value 4 and called ...
Is there a way to delete a line in Visual Studio without cutting it?
...command is omitted when you search in that fashion). The terrible UI only allows me to see 4 results at a time (for me, contrary to that screen shot in the other answer.) which makes it a real pain.
– Kirk Woll
Sep 17 '10 at 1:08
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