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How to get number of entries in a Lua table?
...ole table with pairs(..).
function tablelength(T)
local count = 0
for _ in pairs(T) do count = count + 1 end
return count
end
Also, notice that the "#" operator's definition is a bit more complicated than that. Let me illustrate that by taking this table:
t = {1,2,3}
t[5] = 1
t[9] = 1
Ac...
C# 5 async CTP: why is internal “state” set to 0 in generated code before EndAwait call?
... int num3 = state;
if (num3 == 1)
{
goto Label_ContinuationPoint;
}
if (state == -1)
{
return;
}
t = new SimpleAwaitable();
i = 0;
Label_ContinuationPoint:
while (i < 3)
{
//...
How to return a value from __init__ in Python?
I have a class with an __init__ function.
10 Answers
10
...
Python decorators in classes
...
Would something like this do what you need?
class Test(object):
def _decorator(foo):
def magic( self ) :
print "start magic"
foo( self )
print "end magic"
return magic
@_decorator
def bar( self ) :
print "normal call"
test ...
What is the advantage of GCC's __builtin_expect in if else statements?
I came across a #define in which they use __builtin_expect .
6 Answers
6
...
Parse JSON String into a Particular Object Prototype in JavaScript
...ant to. That's all I'm sayin'. I was really looking for the one-liner: x.__proto__ = X.prototype; (although it's not IE browser compatible at this time)
– BMiner
May 3 '11 at 18:56
...
Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
...
Passing base64 encoded strings in URL
...
en.wikipedia.org/wiki/Base64#URL_applications — it says clearly that escaping ‘makes the string unnecessarily longer’ and mentions the alternate charset variant.
– Michał Górny
Sep 3 '09 at 23:02
...
GCC dump preprocessor defines
...o dump its preprocessor defines from the command line?
I mean things like __GNUC__ , __STDC__ , and so on.
6 Answers
...
Flattening a shallow list in Python [duplicate]
...ndexable sequence, consider itertools.chain and company.
>>> list_of_menuitems = [['image00', 'image01'], ['image10'], []]
>>> import itertools
>>> chain = itertools.chain(*list_of_menuitems)
>>> print(list(chain))
['image00', 'image01', 'image10']
It will work...