大约有 4,000 项符合查询结果（耗时：0.0261秒） [XML]
How to change plot background color?
...e ‘T10’ categorical palette (which is the default color cycle);
a “CN” color spec, i.e. 'C' followed by a single digit, which is an index into the default property cycle (matplotlib.rcParams['axes.prop_cycle']); the indexing occurs at artist creation time and defaults to black if the cycle...
Trusting all certificates with okHttp
...
Update OkHttp 3.0, the getAcceptedIssuers() function must return an empty array instead of null.
share
|
improve this answer
|
follow
...
Find all files in a directory with extension .txt in Python
...f in os.listdir(path) if f.endswith('.txt')]
>>> text_files
['euc-cn.txt', 'euc-jp.txt', 'euc-kr.txt', 'euc-tw.txt', ... 'windows-950.txt']
share
|
improve this answer
|
...
Decorators with parameters?
...rguments is a bit different - the decorator with arguments should return a function that will take a function and return another function. So it should really return a normal decorator. A bit confusing, right? What I mean is:
def decorator_factory(argument):
def decorator(function):
def...
What is lexical scope?
...
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer levels.
There is another way, called dynamic scope used by the first implementation of Lisp, again in a ...
What's the $unwind operator in MongoDB?
...e" ,
author : "bob" ,
posted : new Date () ,
pageViews : 5 ,
tags : [ "fun" , "good" , "fun" ] ,
comments : [
{ author :"joe" , text : "this is cool" } ,
{ author :"sam" , text : "this is bad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 ite...
How to know what the 'errno' means?
... not thread safe while strerror_r() is thread safe. MT-Safe or Thread-Safe functions are safe to call in the presence of other threads. MT, in MT-Safe, stands for Multi Thread. -p26, The GNU C Library char * strerror(int errnum ) [Function] Preliminary: | MT-Unsafe race:strerror | AS-Unsafe heap i18...
Regular expression to match standard 10 digit phone number
...^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Matches the following
123-456-7890
(123) 456-7890
123 456 7890
123.456.7890
+91 (123) 456-7890
If you do not want a match on non-US numbers use
^(\+0?1\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Update :
As noticed by user Simon Weaver below, if y...
How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
...y type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: CN=Android Debug, O=Android, C=US
Issuer: CN=Android Debug, O=Android, C=US
Serial number: 4f3dfc69
Valid from: Fri Feb 17 15:06:17 SGT 2012 until: Sun Feb 09 15:06:17 SGT 2042
Certificate fingerprints:
MD5: 11:10:11:11...
What are the advantages of using nullptr?
...ere doesn't seem to be an advantage. But consider the following overloaded functions:
void f(char const *ptr);
void f(int v);
f(NULL); //which function will be called?
Which function will be called? Of course, the intention here is to call f(char const *), but in reality f(int) will be called! ...