大约有 45,000 项符合查询结果（耗时：0.0603秒） [XML]
Regex lookahead, lookbehind and atomic groups
...obarbarfoo:
bar(?=bar) finds the 1st bar ("bar" which has "bar" after it)
bar(?!bar) finds the 2nd bar ("bar" which does not have "bar" after it)
(?<=foo)bar finds the 1st bar ("bar" which has "foo" before it)
(?<!foo)bar finds the 2nd bar ("bar" which does not have "foo" before...
Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
... the "universal" constructor is not, in fact, supposed to always move from its argument. It's supposed to move if the argument is really an rvalue, and copy if it's an lvalue.
The behaviour, you observe, which always moves, is a bug in libstdc++, which is now fixed according to a comment on the que...
Understanding the difference between __getattr__ and __getattribute__
...nce between __getattr__ and __getattribute__ , however, I am failing at it.
4 Answers
...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
This isn't meant as a troll or flamebait or anything like that. I've been using Vim as my console-editor of choice for a couple months now (for editing configuration files while in my terminal), but I don't think I could stand it for my normal, every day work of writing web applications, which I ...
Get first key in a (possibly) associative array?
... determine the first key in a possibly associative array? My first thought it to just foreach the array and then immediately breaking it, like this:
...
Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
...rmation:
for blink browsers slice() is the fastest method, concat() is a bit slower, and while loop is 2.4x slower.
for other browsers while loop is the fastest method, since those browsers don't have internal optimizations for slice and concat.
This remains true in Jul 2016.
Below are simple sc...
ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
...r than having a huge SQL query.
I saw elasticsearch recently and played with whoosh (a Python implementation of a search engine).
...
Profiling Django
...y django application has become painfully slow on the production. Probably it is due to some complex or unindexed queries.
...
How to inspect FormData?
I've tried console.log and looping through it using for in .
15 Answers
15
...
UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7
In my iPhone application built with Xcode 5 for iOS 7 I set UIViewControllerBasedStatusBarAppearance=YES in info.plist , and in my ViewController I have this code:
...