大约有 40,000 项符合查询结果(耗时:0.0562秒) [XML]

https://stackoverflow.com/ques... 

How to compare two dates in php

How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' . 15 Answers ...
https://stackoverflow.com/ques... 

Broken references in Virtualenvs

I recently installed a bunch of dotfiles on my Mac along with some other applications (I changed to iTerm instead of Terminal, and Sublime as my default text editor) but ever since, all my virtual environments have stopped working, although their folders inside .virtualenvs are still there and they ...
https://stackoverflow.com/ques... 

Xcode build failure “Undefined symbols for architecture x86_64”

...ometimes the error "build failure “Undefined symbols for architecture x86_64”" may be caused by this. Because, some libs (not Apple's) were compiled for x32 originally and doesn't support x64. So what you need, is to change the "Architectures" for your project target like this NB. If you're us...
https://stackoverflow.com/ques... 

Creating a UICollectionView programmatically

...wDataSource,UICollectionViewDelegateFlowLayout> { UICollectionView *_collectionView; } Implementation File:-- - (void)viewDidLoad { [super viewDidLoad]; self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; UICollectionViewFlowLayout *layout=[[UICollect...
https://stackoverflow.com/ques... 

How can I get the current network interface throughput statistics on Linux/UNIX? [closed]

...$dev/statistics"; my %stats = do { opendir +(my $dh), $dir; local @_ = readdir $dh; closedir $dh; map +($_, []), grep !/^\.\.?$/, @_; }; if (-t STDOUT) { while (1) { print "\033[H\033[J", run(); my ($time, $us) = gettimeofday(); my ($sec, $min, $hour) = l...
https://stackoverflow.com/ques... 

Why does “pip install” inside Python raise a SyntaxError?

...stalled package so this is the right way of using the API: subprocess.check_call([sys.executable, '-m', 'pip', 'install', 'SomeProject']) but since Python allows to access internal API and you know what you're using the API for you may want to use internal API anyway eg. if you're building own GUI p...
https://stackoverflow.com/ques... 

ActiveModel::ForbiddenAttributesError when creating new user

...mit(:what, :ever) end Update: Here's a continuation project for CanCan called CanCanCan, which looks promising: CanCanCan share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Unexpected Caching of AJAX results in IE8

...reventing IE from caching the response. Note that if you have other Ajax calls going on where you do want caching, this will disable it for those too. In that case, switch to using the $.ajax() method and enable that option explicitly for the necessary requests. See http://docs.jquery.com/Ajax/jQu...
https://stackoverflow.com/ques... 

ImportError: No module named apiclient.discovery

... You should be able to get these dependencies with this simple install: sudo pip install --upgrade google-api-python-client This is described on the quick start page for python. share | i...
https://stackoverflow.com/ques... 

Create unique constraint with null columns

...or may not be useful. In extreme situations it might even help to maintain all three indexes (the two partial ones and a total on top). Aside: I advise not to use mixed case identifiers in PostgreSQL. share | ...