大约有 43,000 项符合查询结果（耗时：0.0435秒） [XML]
How to ignore deprecation warnings in Python
.../eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/persisted/sob.py:12:
DeprecationWarning: the md5 module is deprecated; use hashlib instead import os, md5, sys
/home/eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/p...
how do I make a single legend for many subplots with matplotlib?
...
There is also a nice function get_legend_handles_labels() you can call on the last axis (if you iterate over them) that would collect everything you need from label= arguments:
handles, labels = ax.get_legend_handles_labels()
fig.legend(handles, labels, loc...
What's a reliable way to make an iOS app crash?
...
Since we all use Clang for iOS, this is fairly reliable:
__builtin_trap();
This has the benefit that it's designed for exactly this purpose, so it shouldn't generate any compiler warnings or errors.
share...
Precision String Format Specifier In Swift
...
a simple way is:
import Foundation // required for String(format: _, _)
print(String(format: "hex string: %X", 123456))
print(String(format: "a float number: %.5f", 1.0321))
share
|
impro...
How do I convert an NSString value to NSData?
...t Developer coming here,
to convert from NSString / String to NSData
var _nsdata = _nsstring.dataUsingEncoding(NSUTF8StringEncoding)
share
|
improve this answer
|
follow
...
Django: accessing session variables from within a template?
...
You need to add django.core.context_processors.request to your template context processors. Then you can access them like this:
{{ request.session.name }}
In case you are using custom views make sure you are passing a RequestContext instance. Example taken ...
Match whitespace but not newlines
...usr/bin/env perl
use strict;
use warnings;
use 5.005; # for qr//
my $ws_not_crlf = qr/[^\S\r\n]/;
for (' ', '\f', '\t', '\r', '\n') {
my $qq = qq["$_"];
printf "%-4s => %s\n", $qq,
(eval $qq) =~ $ws_not_crlf ? "match" : "no match";
}
Output:
" " => match
"\f" => match
"\t" ...
What is this weird colon-member (“ : ”) syntax in the constructor?
...ring("Name")). It fits in with the constructor better than Foo(int num) : m_Count = 5. Not to mention that classes must be constructed at this point anyway, since it's initialized here. Foo(int num) : Bar = num, wouldn't compile right. It just seems weird seeing Foo(int num) : m_Count(num), since pr...
How to use “raise” keyword in Python [duplicate]
...dler, so that it can be handled further up the call stack.
try:
generate_exception()
except SomeException as e:
if not can_handle(e):
raise
handle_exception(e)
share
|
improve this answe...
Correct way to pass multiple values for same parameter name in GET request
...s multiple values from this example at w3schools.
<form action="/action_page.php">
<select name="cars" multiple>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="opel">Opel</option>
<option value="audi"...