大约有 44,000 项符合查询结果(耗时:0.0972秒) [XML]
Test if characters are in a string
...
@GregSnow -- Tried system.time(a <- grepl("abc", vec)) and system.time(a <- grepl("abc", vec, fixed=TRUE)), and fixed=TRUE is still, if anything slightly slower. The difference isn't appreciable with these short strings, but fixed=TRUE still doesn't seem to be faster. Thanks ...
What is a segmentation fault?
What is a segmentation fault? Is it different in C and C++? How are segmentation faults and dangling pointers related?
14 A...
Why can I access TypeScript private members when I shouldn't be able to?
I'm looking at implementation of private members in TypeScript, and I find it a little confusing. Intellisense doesn't allow to access private member, but in pure JavaScript, it's all there. This makes me think that TS doesn't implement private members correctly.
Any thoughts?
...
How to get image height and width using java?
Is there any other way besides using ImageIO.read to get image height and width?
13 Answers
...
Combining CSS Pseudo-elements, “:after” the “:last-child”
...pe: none; }
li:after { content: ", "; }
li:last-child:before { content: "and "; }
li:last-child:after { content: "."; }
<html>
<body>
<ul>
<li>One</li>
<li>Two</li>
<li>Three</li>
</ul>
</body>...
Padding between ActionBar's home icon and title
Does anybody know how to set padding between the ActionBar's home icon and the title?
21 Answers
...
Last non-empty cell in a column
...
This works with both text and numbers and doesn't care if there are blank cells, i.e., it will return the last non-blank cell.
It needs to be array-entered, meaning that you press Ctrl-Shift-Enter after you type or paste it in. The below is for colu...
Java concurrency: Countdown latch vs Cyclic barrier
I was reading through the java.util.concurrent API , and found that
14 Answers
14
...
Abstract methods in Python [duplicate]
...seems too easy for me in Java yet up till now I have been unable to understand in Python which is surprising to me at least.
...
Moq mock method with out specifying input parameter
...nything where the types fit for all parameters"?
– Brandon
Mar 2 '16 at 19:13
6
...
