大约有 42,000 项符合查询结果（耗时：0.0797秒） [XML]
Instantiate and Present a viewController in Swift
I started taking a look of the new Swift on Xcode 6 , and I tried some demo projects and tutorials. Now I am stuck at:
1...
jQuery map vs. each
In jQuery, the map and each functions seem to do the same thing. Are there any practical differences between the two? When would you choose to use one instead of the other?
...
C pointer to array/array of pointers disambiguation
...declarators. P[N] is an array declarator. P(....) is a function declarator and *P is a pointer declarator. So everything in the following is the same as without any parentheses (except for the one of the functions' "()": int (((*p))); void ((g(void))); int *(a[1]); void (*(p())).
...
Significance of -pthread flag when compiling
In various multi threaded C and C++ projects I've seen the -pthread flag applied to both the compiling and linking stage while others don't use it at all and just pass -lpthread to the linking stage.
...
How do I detect a click outside an element?
...
This breaks standard behaviour of many things, including buttons and links, contained within #menucontainer. I am surprised this answer is so popular.
– Art
Jun 12 '10 at 8:00
...
How do I install cygwin components from the command line?
...ebian or yum on redhat that allows me to install components from the command line?
9 Answers
...
Does pandas iterrows have performance issues?
I have noticed very poor performance when using iterrows from pandas.
6 Answers
6
...
What is the optimal length for user password salt? [closed]
Any salt at all will obviously help when salting and hashing a user's password. Are there any best practices for how long the salt should be? I'll be storing the salt in my user table, so I would like the best tradeoff between storage size and security. Is a random 10 character salt enough? Or ...
X-UA-Compatible is set to IE=edge, but it still doesn't stop Compatibility Mode
...S7) or through the custom HTTP headers in the web site's properties (IIS6) and set X-UA-Compatible there. The meta tag doesn't override IE's intranet setting in Compatibility View Settings, but if you set it at the hosting server it will override the compatibility.
Example for web.config in IIS7:
...
How can I String.Format a TimeSpan object with a custom format in .NET?
...
Please note: this answer is for .Net 4.0 and above. If you want to format a TimeSpan in .Net 3.5 or below please see JohannesH's answer.
Custom TimeSpan format strings were introduced in .Net 4.0. You can find a full reference of available format specifiers at th...