大约有 36,010 项符合查询结果（耗时：0.0974秒） [XML]
Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
...
@NotNull is a JSR 303 Bean Validation annotation. It has nothing to do with database constraints itself. As Hibernate is the reference implementation of JSR 303, however, it intelligently picks up on these constraints and translates them into database constraints for you, so you get two for t...
What's the point of NSAssert, actually?
.../unit testing, and also when you provide frameworks to stop the users from doing "evil" things.
share
|
improve this answer
|
follow
|
...
What does “@private” mean in Objective-C?
What does @private mean in Objective-C?
3 Answers
3
...
How to specify an area name in an action link?
...hich currently specifies the controller and action, but of course the link doesn't work if I'm in the wrong area. I see no overload for actionlink that takes an area parameter, is it possible to do?
...
How can I erase all inline styles with javascript and leave only the styles specified in the css sty
...o, your forgetting the massive inefficient overhead of looping though more DOM elements which makes the second method even faster than the first.
– user7892745
May 11 '17 at 19:53
...
How to export all collections in MongoDB?
...orestore -d <database_name> <directory_backup>
This way, you don't need to deal with all collections individually. Just specify the database.
Note that I would recommend against using mongodump/mongorestore for big data storages. It is very slow and once you get past 10/20GB of data i...
Getting multiple keys of specified value of a generic Dictionary?
...other. Encapsulate them in a separate class, and work out what you want to do when you have duplicate key or value (e.g. throw an exception, overwrite the existing entry, or ignore the new entry). Personally I'd probably go for throwing an exception - it makes the success behaviour easier to define....
Comparing two strings, ignoring case in C# [duplicate]
...culture-aware comparisons.
ToLowerCase can be the better option if you're doing a lot of comparisons against the same string, however.
As with any performance optimization: measure it, then decide!
share
|
...
JavaScript global event mechanism
...
Does this help you:
<script type="text/javascript">
window.onerror = function() {
alert("Error caught");
};
xxx();
</script>
I'm not sure how it handles Flash errors though...
Update: it doesn't work in O...
Git fast forward VS no fast forward merge
...t, and merge them as a single unit. It is clear from your history when you do feature branch merging with --no-ff.
If you do not care about such thing - you could probably get away with FF whenever it is possible. Thus you will have more svn-like feeling of workflow.
For example, the author of thi...