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Direct vs. Delegated - jQuery .on()
... if attaching many event handlers (for example, each row of a table), it is often better performance wise to use single delegated handler to container instead of attaching many direct handlers. You can see this from the basic fact that event handler count is by itself a profiling metric...
MySQL: Order by field size/length
Here is a table structure (e.g. test):
3 Answers
3
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How to import module when module name has a '-' dash or hyphen in it?
...appens with sys.modules, you don't need it to import itself), just getting all of the file's globals into your own scope, you can use execfile
# contents of foo-bar.py
baz = 'quux'
>>> execfile('foo-bar.py')
>>> baz
'quux'
>>>
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Is there a performance impact when calling ToList()?
...ntees that the file amount in the folder is always small, the code is acceptable. But it's still suggested to use a lazy version: Directory.EnumerateFiles in C#4. This is much more like a query, which will not be executed immediately, you can add more query on it like:
Directory.EnumerateFiles(myP...
Prevent direct access to a php include file
...eople the trouble of Googling, if you're using Apache, put this in a file called ".htaccess" in the directory you don't want to be accessible:
Deny from all
If you actually have full control of the server (more common these days even for little apps than when I first wrote this answer), the best ...
What is the definition of “interface” in object oriented programming
... one of the more overloaded and confusing terms in development.
It is actually a concept of abstraction and encapsulation. For a given "box", it declares the "inputs" and "outputs" of that box. In the world of software, that usually means the operations that can be invoked on the box (along with ar...
JavaScript function similar to Python range()
...uple of additional defensive checks - ensure that the arguments passed are all coercible to numbers and ensure that stop is greater than start (and swap them if not).
– Russ Cam
Nov 25 '11 at 18:46
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...ssing token (see below), is
replaced by the corresponding argument after all macros contained therein have been
expanded. Before being substituted, each argument’s preprocessing tokens are
completely macro replaced as if they formed the rest of the preprocessing file; no other
preprocessin...
When should you NOT use a Rules Engine? [closed]
...
Sure: Put your stuff in a single decision table and query to get the answers you want. No need for Rete rules engine.
– duffymo
Feb 2 '15 at 15:24
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How does an underscore in front of a variable in a cocoa objective-c class work?
...to-generated accessor (for the property) knows which ivar to use. Specifically, in your implementation file, your synthesize should look like this:
@synthesize missionName = _missionName;
More generically, this is:
@synthesize propertyName = _ivarName;
...