大约有 47,000 项符合查询结果（耗时：0.0480秒） [XML]
Optimistic vs. Pessimistic locking
I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would use either one in general?
...
How do I overload the square-bracket operator in C#?
... +1 for the handy list. FYI the link died. (4 years later, I know)
– Mixxiphoid
Mar 4 '13 at 21:04
I'd li...
How do I undo 'git add' before commit?
...used to error out when
you do not have any commits in your history, but it now gives you
an empty index (to match non-existent commit you are not even on).
Documentation: git reset
share
|
improve ...
Get the _id of inserted document in Mongo database in NodeJS
...
I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.
– vantesllar
Oct 30 '16 at 20:45
...
How to unit test abstract classes: extend with stubs?
... then become implementations of this new interface.
This means you can now test your previously abstract class using a mock instance of the new interface, and each new implementation through the now public interface. Everything is simple and testable.
Solution For 2
If you have the second si...
How to compare DateTime in C#?
... Your answer provides a way to see what the difference is instead of just knowing that the date is before or after. Of course his answer is better for the OP, but yours is better for some people who got here from google (self included).
– levininja
Apr 14 '17 ...
Change key pair for ec2 instance
...ould do the trick for #5. And don't forget step 13. is probably rm ~/.ssh/known_hosts on boxes you've been connecting from.
– brandonscript
Apr 9 '14 at 6:38
...
Integer division: How do you produce a double?
...
I don't like casting primitives, who knows what may happen.
Why do you have an irrational fear of casting primitives? Nothing bad will happen when you cast an int to a double. If you're just not sure of how it works, look it up in the Java Language Specificatio...
Wait for a process to finish
...
Who would have known that tail would do this.
– ctrl-alt-delor
Jul 30 '17 at 15:06
8
...
Long press on UITableView
...
Don't forget, gesture recognizers can now be added to UI elements directly in Interface Builder and connected through an IBAction method, so this answer is even easier ;-) (just remember to attach the recognizer to the UITableView, not the UITableViewCell...)
...