大约有 47,000 项符合查询结果（耗时：0.0549秒） [XML]
How do I check the operating system in Python?
... platform you are on out of "Linux", "Windows", or "Darwin" (Mac), without more precision, you should use:
>>> import platform
>>> platform.system()
'Linux' # or 'Windows'/'Darwin'
The platform.system function uses uname internally.
...
How can I efficiently select a Standard Library container in C++11?
...iderations only really kick in when you start handling a few thousands (or more) of items.
There are two big categories of containers:
Associative containers: they have a find operation
Simple Sequence containers
and then you can build several adapters on top of them: stack, queue, priority_que...
Should I pass an std::function by const-reference?
...e are forced to copy the std::function.
That store makes passing by value more optimal. If there is any possibility you are storing a copy of the std::function, pass by value. Otherwise, either way is roughly equivalent: the only downside to by-value is if you are taking the same bulky std::funct...
How to sort an array in descending order in Ruby
... ( 0.242340)
New results running the above code using Ruby 2.2.1 on a more recent Macbook Pro. Again, the exact numbers aren't important, it's their relationships:
Running Ruby 2.2.1
n=500
user system total real
sort 0.650000 0.000...
Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
... read and understand. for(;;) is rather cryptic.
Source:
I messed a little more with .NET Reflector, and I compiled both loops with the "Optimize Code" on in Visual Studio.
Both loops compile into (with .NET Reflector):
Label_0000:
goto Label_0000;
Raptors should attack soon.
...
git pull VS git fetch Vs git rebase
...hat the warning really only matters in cases of where you've got something more complex than X -> origin/X, but I could be wrong. If someone knows of a scenario I'm overlooking, please share.
– neverfox
Jun 26 '13 at 17:00
...
How do I perform HTML decoding/encoding using Python/Django?
...it is only appropriate for strings encoded with django.utils.html.escape. More generally, it is a good idea to stick with the standard library:
# Python 2.x:
import HTMLParser
html_parser = HTMLParser.HTMLParser()
unescaped = html_parser.unescape(my_string)
# Python 3.x:
import html.parser
html_p...
Should developers have administrator permissions on their PC
...frame systems than it is on Windows. On these platforms a user can do far more in their own domain without needing system-wide permissions. You will probably still want root or sudo access for developers, but not having this will get underfoot much less often. This flexibility is a significant bu...
Downloading a Google font and setting up an offline site that uses it
... Google, this approach relies on WOFF format alone and is thus essentially more limited. Besides, Google distributes their fonts in TTF format, not WOFF.
– Jukka K. Korpela
Apr 10 '13 at 17:32
...