大约有 20,204 项符合查询结果（耗时：0.0427秒） [XML]
INSERT … ON DUPLICATE KEY (do nothing)
I have a table with a unique key for two columns:
3 Answers
3
...
How to turn off word wrapping in HTML?
I feel silly for not being able to figure this out, but how do I turn off wordwrap? the css word-wrap property can be forced on with break-word , but cannot be forced off (only can be left alone with normal value).
...
Gesture recognizer and button actions
I have a view hierarchy that looks something like this:
6 Answers
6
...
Control the size of points in an R scatterplot?
In R, the plot() function takes a pch argument that controls the appearance of the points in the plot. I'm making scatterplots with tens of thousands of points and prefer a small, but not too small dot. Basically, I find pch='.' to be too small, but pch=19 to be too fat. Is there somethin...
How to color System.out.println output? [duplicate]
...
13 Answers
13
Active
...
Android: how to make an activity return results to the activity which calls it?
I have a Location activity that can be called from many activities, such as Sign up and Order . In the Location activity the user enters his location, so the activity Location will return this new location to that activity which called it.
...
What are all the differences between src and data-src attributes?
What are differences and consequences (both good and bad) of using either data-src or src attribute of img tag? Can I achieve the same results using both? If so, when should be used each of them?
...
Backwards migration with Django South
Ok, so this seems like a really silly thing to ask, and I'm sure I'm missing something somewhere.
3 Answers
...
SQL Server - When to use Clustered vs non-Clustered Index?
I know primary differences between clustered and non clustered indexes and have an understanding of how they actually work. I understand how clustered and non-clustered indexes improve read performance. But one thing I am not sure is that what would be the reasons where I would choose one over the o...
How to conditionally push an item in an observable array?
I would like to push a new item onto an observableArray , but only if the item is not already present. Is there any "find" function or recommended pattern for achieving this in KnockoutJS?
...