大约有 26,000 项符合查询结果（耗时：0.0414秒） [XML]
A migration to add unique constraint to a combination of columns
What I need is a migration to apply unique constraint to a combination of columns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
...
How to handle AccessViolationException
I am using a COM object (MODI) from within my .net application. The method I am calling throws a System.AccessViolationException, which is intercepted by Visual Studio. The odd thing is that I have wrapped my call in a try catch, which has handlers for AccessViolationException, COMException and ev...
Intercept page exit event
When editing a page within my system, a user might decide to navigate to another website and in doing so could lose all the edits they have not saved.
...
Why does Internet Explorer not send HTTP post body on Ajax call after failure?
We are able to reliably recreate the following scenario:
6 Answers
6
...
What's the difference between findAndModify and update in MongoDB?
I'm a little bit confused by the findAndModify method in MongoDB. What's the advantage of it over the update method? For me, it seems that it just returns the item first and then updates it. But why do I need to return the item first? I read the MongoDB: the definitive guide and it says that i...
Argparse: Way to include default values in '--help'?
...
Active
Oldest
Votes
...
Efficient list of unique strings C#
What is the most efficient way to store a list of strings ignoring any duplicates?
I was thinking a dictionary may be best inserting strings by writing dict[str] = false; and enumerating through the keys as a list. Is that a good solution?
...
How to copy an object in Objective-C
I need to deep copy a custom object that has objects of its own. I've been reading around and am a bit confused as to how to inherit NSCopying and how to use NSCopyObject.
...
How to revert a Git Submodule pointer to the commit stored in the containing repository?
...nd it, the main repo stores a SHA value (somewhere...), pointing to the specific commit of the submodule that it is "linked to".
...
HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
...
Active
Oldest
Votes
...