大约有 44,000 项符合查询结果(耗时:0.0784秒) [XML]

https://stackoverflow.com/ques... 

Adding asterisk to required fields in Bootstrap 3

... Use .form-group.required without the space. .form-group.required .control-label:after { content:"*"; color:red; } Edit: For the checkbox you can use the pseudo class :not(). You add the required * after each label unless ...
https://stackoverflow.com/ques... 

What's the best practice for primary keys in tables?

...fer a numeric type because numeric types are stored in a much more compact format than character formats. This is because most primary keys will be foreign keys in another table as well as used in multiple indexes. The smaller your key, the smaller the index, the less pages in the cache you will use...
https://stackoverflow.com/ques... 

How does Trello access the user's clipboard?

...ner"><textarea id="clipboard"></textarea></div> CSS for the clipboard stuff: #clipboard-container { position: fixed; left: 0px; top: 0px; width: 0px; height: 0px; z-index: 100; display: none; opacity: 0; } #clipboard { width: 1px; height: 1px; pad...
https://stackoverflow.com/ques... 

Remove everything after a certain character

...d when necessary (this isn't one of those cases). Updated code to account for no '?': var s = '/Controller/Action'; var n = s.indexOf('?'); s = s.substring(0, n != -1 ? n : s.length); document.write(s); Sample here share...
https://stackoverflow.com/ques... 

How do I diff the same file between two different commits on the same branch?

... between two different commits (not contiguous) on the same branch (master for example)? 11 Answers ...
https://stackoverflow.com/ques... 

When should I use nil and NULL in Objective-C?

...ith an object. if(str==nil) NSLog("str is empty"); Now NULL is used for non-object pointer (like a C pointer) in Objective-C. Like nil , NULL got no value nor address. char *myChar = NULL; struct MyStruct *dStruct = NULL; So if there is a situation, when I need to check my struct (structur...
https://stackoverflow.com/ques... 

gradle build fails on lint task

... With 0.7.0 there comes extended support for Lint, however, it does not work always properly. (Eg. the butterknife library) Solution is to disable aborting build on found lint errors I took the inspiration from https://android.googlesource.com/platform/tools/base...
https://stackoverflow.com/ques... 

@Html.HiddenFor does not work on Lists in ASP.NET MVC

...to add more items to this List with jQuery which makes an array unsuitable for expansion later on. Normally you would use ...
https://stackoverflow.com/ques... 

How to add Action Bar from support library into PreferenceActivity?

...ed into support library, revision 18. It now has ActionBarActivity class for creating activities with Action Bar on older versions of Android. ...
https://stackoverflow.com/ques... 

Understanding Linux /proc/id/maps

...memory use. The /proc/pid/maps utility/file seems to be a good resource for seeing the details. Unfortunately I don't understand all the columns and entries. ...