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Why are unnamed namespaces used and what are their benefits?
... You explain the relation to static. Can you please also compare with __attribute__ ((visibility ("hidden")))?
– phinz
Mar 22 at 15:16
...
Hidden features of C
...ints to the compiler (common in the Linux kernel)
#define likely(x) __builtin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
see: http://kerneltrap.org/node/4705
What I like about this is that it also adds some expressiveness to some functions.
void foo(int arg)
{
if (...
Is git-svn dcommit after merging in git dangerous?
...d answer here messed up what I was doing - couldn't git svn rebase without errors.
– João Bragança
Dec 22 '10 at 23:31
19
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What is the maximum length of a valid email address?
...tely, in his attempt to clarify the situation, Klensin included some gross errors that were corrected in the Errata. But nobody reads the errata so RFC 3693 ends up being very unhelpful, ironically.
– Dominic Sayers
Feb 12 '14 at 7:17
...
How to access object attribute given string corresponding to name of that attribute
...ay prefer to use a generalized getter method like so:
class Test:
def __init__(self):
self.attr1 = 1
self.attr2 = 2
def get(self,varname):
return getattr(self,varname)
t = Test()
x = "attr1"
print ("Attribute value of {0} is {1}".format(x, t.get(x)))
Outputs:
At...
How can I extract audio from video with ffmpeg?
...g.exe
Issue your command and wait for the output file (or troubleshoot any errors)
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CORS Access-Control-Allow-Headers wildcard being ignored?
...d-By, X-Requested-With
.htaccess Example (CORS Included):
<IfModule mod_headers.c>
Header unset Connection
Header unset Time-Zone
Header unset Keep-Alive
Header unset Access-Control-Allow-Origin
Header unset Access-Control-Allow-Headers
Header unset Access-Control-Expose-Headers
...
Ways to circumvent the same-origin policy
...cess any third-party resource.
Source: http://www.nczonline.net/blog/2010/05/25/cross-domain-ajax-with-cross-origin-resource-sharing/
The window.postMessage method
Method type: iframe.
window.postMessage, when called, causes a MessageEvent to be dispatched at the target window when any pending...
Weak and strong property setter attributes in Objective-C
...n release autorelease etc... Instead you use strong weak for properties or __strong
__weak
for variables (defaults to __strong). Strong is the equivalent to retain, however ARC will manage the release for you.
The only time you would want to use weak, is if you wanted to avoid retain cycles (e.g...
Running python script inside ipython
...
from within the directory of "my_script.py" you can simply do:
%run ./my_script.py
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