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Which is faster : if (bool) or if(int)?
... (specifically -O3), here's what I get:
For f():
.type _Z1fi, @function
_Z1fi:
.LFB0:
.cfi_startproc
.cfi_personality 0x3,__gxx_personality_v0
cmpl $1, %edi
sbbl %eax, %eax
andb $58, %al
addl $99, %eax
ret
.cfi_e...
Creating an abstract class in Objective-C
...stringWithFormat:@"%s must be overridden in a subclass/category", __PRETTY_FUNCTION__] userInfo:nil]
#define methodNotImplemented() mustOverride()
then in your methods you can use this
- (void) someMethod {
mustOverride(); // or methodNotImplemented(), same thing
}
Notes: Not sure if maki...
Purpose of Trigraph sequences in C++?
...teral won't get interpreted as a digraph.
For a nice education on various fun with punctuation in C/C++ programs (including a trigraph bug that would defintinely have me pulling my hair out), take a look at Herb Sutter's GOTW #86 article.
Addendum:
It looks like GCC will not process (and will w...
How can I search sub-folders using glob.glob module?
...
@User123: that doesn't list directories recursively. You are listing all text files one level deep, but not in further subdirectories or even directly in path to directory.
– Martijn Pieters♦
...
Why are Python's 'private' methods not actually private?
...
Example of private function
import re
import inspect
class MyClass :
def __init__(self) :
pass
def private_function ( self ) :
try :
function_call = inspect.stack()[1][4][0].strip()
# See if ...
How to convert a currency string to a double with jQuery or Javascript?
...
This example run ok
var currency = "$1,123,456.00";
var number = Number(currency.replace(/[^0-9\.]+/g,""));
console.log(number);
share
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How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
...han k time if it's not there
Supports ordered traversal
No need for a hash function
Deletion is straightforward
New operations:
You can quickly look up prefixes of keys, enumerate all entries with a given prefix, etc.
Advantages of linked structure:
If there are many common prefixes, the spa...
Why can I access TypeScript private members when I shouldn't be able to?
...'t be a member of the class, it would be a local variable created inside a function scope inside the code that creates the object. That would mean that you can't access it like a member of the class, i.e. using the this keyword.
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Can two applications listen to the same port?
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iptables -m statistic --mode random --probability 0.5 is fun.
– Jed Smith
Nov 7 '09 at 21:27
1
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Validating parameters to a Bash script
... as a commentar). i did "$#" to fix it. second, the regex also matches "foo123bar". i fixed it by doing ^[0-9]+$. you may also fix it by using grep's -x option
– Johannes Schaub - litb
Mar 31 '09 at 1:21
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