大约有 47,000 项符合查询结果（耗时：0.0548秒） [XML]
Why there is no ForEach extension method on IEnumerable?
...
Couldn't you just use Select instead of your Apply method? It seems to me that applying an action to each element and yielding it is exactly what Select does. E.g. numbers.Select(n => n*2);
– rasmusvhansen
...
How do I simulate a low bandwidth, high latency environment?
...ce pane is part of the Hardware IO Tools for XCode, which you can download from developer.apple.com/downloads
– avernet
Feb 4 '13 at 19:10
...
django : using select_related and get_object_or_404 together
Is there any way of using get_object_or_404 and select_related together or any other way to achieve the result of using these two together(except from putting it in try/except)??
...
Finish all previous activities
...n when the user logs in and home is created and afterwards all the screens from 1 to 5 on top of that one. The code i posted will return you to home screen finishing all the other activites. You can add an extra in the intent and read that in the home screen activity and finish it also (maybe launch...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
...
Select the class's symbol in its header file - i.e. the bit just after @interface. Then the refactoring stuff should be enabled.
share
|
...
MySQL get the date n days ago as a timestamp
...
DATE_SUB will do part of it depending on what you want
mysql> SELECT DATE_SUB(NOW(), INTERVAL 30 day);
2009-06-07 21:55:09
mysql> SELECT TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day));
2009-06-07 21:55:09
mysql> SELECT UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day));
1244433347
...
How do I purge a linux mail box with huge number of emails? [closed]
...
It is not a good praxis data manipulation from outside an application. If there is an option or command that can do the job, it is better to use it. As @timaschew answered, you can use the ‘d’ command inside the mail tool.
– pocjoc
...
Android: Storing username and password?
...ve to re-enter their name/password often, so storing that info makes sense from a usability perspective.
The advice from the (Android dev guide) is:
In general, we recommend minimizing the frequency of asking for user
credentials -- to make phishing attacks more conspicuous, and less
likel...
“[notice] child pid XXXX exit signal Segmentation fault (11)” in apache error.log [closed]
...er why it might exhibit this behavior. It didn't find a lot of the symbols from my build, but that should just produce a less informative backtrace no?
– lucian303
Aug 19 '12 at 18:53
...
Best way to organize jQuery/JavaScript code (2013) [closed]
... var parent = "";
if(selected_folder != "" ){
parent = selected_folder+" .content";
}
$R.find(".layer").clone()
.addClass(name).html(...