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Javascript “this” pointer within nested function
...r example, consider the following funciton,
function someFunction() {
}
and the following object,
var obj = { someFunction: someFunction };
If you call the function using method syntax such as,
obj.someFunciton();
then this is bound to obj.
If you call someFunction() directly, such as,
so...
Weird PHP error: 'Can't use function return value in write context'
I'm getting this error and I can't make head or tail of it.
12 Answers
12
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How to delete/unset the properties of a javascript object? [duplicate]
...window.a; //true
delete this.a; //true
http://perfectionkills.com/understanding-delete/
another fact is that using delete on an array will not remove the index but only set the value to undefined, meaning in certain control structures such as for loops, you will still iterate over that entity, wh...
What is the equivalent of Java's final in C#?
...inal keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used.
Classes
To prevent subclassing (inheritance from the defined class):
Java
public final class MyFinalClass {...}
C#
public sealed class MyFinalClass {...
How do I delete all untracked files from my working directory in Mercurial?
...ded a bunch of files to my working directory, didn't add them via 'hg add' and now want to get rid of those new files entirely?
...
Pointers, smart pointers or shared pointers? [duplicate]
...ting/copying/destructing a shared pointer needs to be an atomic operation, and this can hinder performance if you have many threads running. However, it won't always be the case - only testing will tell you for sure.
There is an argument (that I like) against shared pointers - by using them, you ar...
Is it possible in SASS to inherit from a class in another file?
...ty much answered this question (I just neglected to check back for a while and then forgot); but I'm accepting your answer because it is the most complete—i.e., it walks me through the whole process. Thanks!
– Dan Tao
Mar 7 '13 at 22:02
...
Iterate through pairs of items in a Python list [duplicate]
... the advantage that this works on iterators is that this does not require random access into a stream of data (i.e. array access); rather, it only needs to ingest each item once, and caches it for the next evaluation. So if you have, say, a Twitter firehose, you don't ever need to read the firehose ...
How can I find the version of the Fedora I use?
...on't work if anyone's changed the login banners … I typically edit mine, and so, it seems, do many (most) corporate IT departments... :-(
– BRPocock
Dec 2 '11 at 16:05
8
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Checking if an instance's class implements an interface?
... "yes";
}
You can use the "instanceof" operator. To use it, the left operand is a class instance and the right operand is an interface. It returns true if the object implements a particular interface.
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