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When should I make explicit use of the `this` pointer?
...;int> b;
b.foo();
}
If you omit this->, the compiler does not know how to treat i, since it may or may not exist in all instantiations of A. In order to tell it that i is indeed a member of A<T>, for any T, the this-> prefix is required.
Note: it is possible to still omit this-...
How to log a method's execution time exactly in milliseconds?
...SDate date]
#define TOCK NSLog(@"Time: %f", -[startTime timeIntervalSinceNow])
Use it like this:
TICK;
/* ... Do Some Work Here ... */
TOCK;
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How can I change the file type association of an existing file in WebStorm?
...think. I renamed it to have the .js extension which is what I wanted, but now it's stuck without any syntax highlighting. WebStorm doesn't treat it as a javascript file. I can't find anywhere to change how WebStorm treats this file. I've tried renaming it and renaming it back and that doesn't wo...
How to convert an array to object in PHP?
...[id]=> 321313[username]=>shahbaz)
$object = (object) $array_name;
//now it is converted to object and you can access it.
echo $object->username;
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How to check if a user is logged in (how to properly use user.is_authenticated)?
...
Update for Django 1.10+:
is_authenticated is now an attribute in Django 1.10.
The method was removed in Django 2.0.
For Django 1.9 and older:
is_authenticated is a function. You should call it like
if request.user.is_authenticated():
# do something if the user is au...
JavaScript - onClick to get the ID of the clicked button
...uttons are in a repeater and therefore generated dynamically, so you dont know how many buttons you will have?
– Amc_rtty
Oct 26 '12 at 12:47
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How do you add Boost libraries in CMakeLists.txt?
... can also use FIND_PACKAGE(Boost REQUIRED COMPONENTS system) if you don't know the exact version of boost to use
– smac89
Aug 17 '17 at 6:39
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Should each and every table have a primary key?
... thinking I wouldn't need one, I've ended up going back and adding one. I now create even my join tables with an auto-generated identity field that I use as the primary key.
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How to move screen without moving cursor in Vim?
...edalat, it's highly annoying in other editors when you scroll away, don't know where your cursor is anymore and have to use the mouse to click somewhere just so you can get the cursor back. Or you think you are "here", start typing and it suddenly jumps back to where the cursor was, at which point y...
Reading Excel files from C#
... any empty sheets in it. So, although it was very easy to integrate we are now re-evaluating whether to keep using this library. It does not seem to be being actively developed.
– Ian1971
Oct 23 '12 at 13:02
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