大约有 47,000 项符合查询结果（耗时：0.0944秒） [XML]
Proper use of beginBackgroundTaskWithExpirationHandler
...en you're finished - otherwise the app will be killed after its allotted tim>me m> has expired.
Mine tend look som>me m>thing like this:
- (void) doUpdate
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[self beginBackgroundUpdateTask];
NSURLResponse...
常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...零散，于是汇总了一些常用的Git命令。
常用配置
system #系统级别
--global #用户全局
--local #单独一个项目
git config --global user.nam>me m> "xxxx" #用户名
git config --global user.email "xxxx@xxx.com" #邮箱
git config --global core.editor vim #编辑器
gi...
Where do you store your salt strings?
...per per-entry salt string when hashing passwords for database storage. For my needs, storing the salt in the DB next to the hashed password has always worked fine.
...
Can I zip more than two lists together in Scala?
...y size, but the transpose function does exactly what you need if you don't mind getting a list of lists instead.
share
|
improve this answer
|
follow
|
...
Differences between Java 8 Date Tim>me m> API (java.tim>me m>) and Joda-Tim>me m>
I know there are questions relating to java.util.Date and Joda-Tim>me m>. But after som>me m> digging, I couldn't find a thread about the differences between the java.tim>me m> API (new in Java 8 , defined by JSR 310 ) and Joda-Tim>me m> .
...
How are msys, msys2, and msysgit related to each other?
...'t find a thorough description of what's going on with these 3 versions of MSYS. (It's entirely possible I just don't know what to look for.) I do understand that MSYS is a minimal port of Linux tools to support developm>me m>nt using MinGW, but I'm not clear on the relationship between the three of them...
Generating v5 UUID. What is nam>me m> and nam>me m>space?
I've read the man page, but I do not undestand what nam>me m> and nam>me m>space are for.
3 Answers
...
How do I get the collection of Model State Errors in ASP.NET MVC?
...
<% ViewData.ModelState.IsValid %>
or
<% ViewData.ModelState.Values.Any(x => x.Errors.Count >= 1) %>
and for a specific property...
<% ViewData.ModelState["Property"].Errors %> // Note this returns a collection
...
Why doesn't Python have a sign function?
... return in all the edge cases (+/-0, +/-nan, etc)
So they decided to implem>me m>nt only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which som>me m>tim>me m>s might require the call to cmp(x,0).
I don't know why it's not a built-in, but ...
What is the difference between _tmain() and main() in C++?
If I run my C++ application with the following main() m>me m>thod everything is OK:
5 Answers
...