大约有 44,000 项符合查询结果(耗时:0.0608秒) [XML]

https://stackoverflow.com/ques... 

“Ago” date/time functions in Ruby/Rails

I was wondering if there's a way in Rails to calculate time stamp like - half a minute ago, 2 minute ago, 1 day ago etc. Something like twitter real time date stamp. ...
https://stackoverflow.com/ques... 

Using ChildActionOnly in MVC

...would you use the attribute ChildActionOnly ? What is a ChildAction and in what circumstance would you want restrict an action using this attribute? ...
https://stackoverflow.com/ques... 

Adding a build configuration in Xcode

I'd like to add a new build configuration in Xcode 5, "QA", to the other three we currently have (Debug, Distribution, Release). However, when I click "Editor > Add Configuration", everything is grayed out. I'm not very familiar with Xcode in the first place, so I'm not sure how to go about doing th...
https://stackoverflow.com/ques... 

Check difference in seconds between two times

Hi all I am currently working on a project where when a certain event happens details about the event including the time that the event occurred is added into a list array. ...
https://stackoverflow.com/ques... 

Block commenting in Ruby

... You can do =begin [Multi line comment] =end =begin and =end must be at the beginning of the line (not indented at all). Source Also, in TextMate you can press Command + / to toggle regular comments on a highlighted block of code. Sou...
https://stackoverflow.com/ques... 

Android ListView not refreshing after notifyDataSetChanged

... Look at your onResume method in ItemFragment: @Override public void onResume() { super.onResume(); items.clear(); items = dbHelper.getItems(); // reload the items from database adapter.notifyDataSetChanged(); } what you just have updat...
https://stackoverflow.com/ques... 

git ignore all files of a certain type, except those in a specific subfolder

... An optional prefix ! which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources. http://schacon.github.com/git/gitignore.html *.json !spec/*.js...
https://stackoverflow.com/ques... 

How do you turn off auto-capitalisation in HTML form fields in iOS?

By default, iOS’s keyboard sets the first letter in text form fields (including type=email ) to uppercase. (At least prior to iOS 5.) ...
https://stackoverflow.com/ques... 

How to keep environment variables when using sudo

...d with sudo the environment variables are not there. For example after setting HTTP_PROXY the command wget works fine without sudo . However if I type sudo wget it says it can't bypass the proxy setting. ...
https://stackoverflow.com/ques... 

Set default CRAN mirror permanent in R

How can I set a specific CRAN mirror permanently in R? 1 Answer 1 ...