大约有 47,000 项符合查询结果（耗时：0.0663秒） [XML]
Check if value exists in Postgres array
Using Postgres 9.0, I need a way to test if a value exists in a given array. So far I came up with something like this:
7 A...
Xcode build failure “Undefined symbols for architecture x86_64”
An Xcode beginner's question:
24 Answers
24
...
How to write file if parent folder doesn't exist?
I need to write file to the following path:
10 Answers
10
...
Calculating text width
I'm trying to calculate text width using jQuery. I'm not sure what, but I am definitely doing something wrong.
22 Answers
...
Get JSON object from URL
I have a URL that returns a JSON object like this:
11 Answers
11
...
Are C++ enums signed or unsigned?
Are C++ enums signed or unsigned? And by extension is it safe to validate an input by checking that it is = your min value (assuming you started at 0 and incremented by 1)?
...
Make .gitignore ignore everything except a few files
I understand that a .gitignore file cloaks specified files from Git's version
control. I have a project (LaTeX) that generates lots of extra files (.auth,
.dvi, .pdf, logs, etc) as it runs, but I don't want those to be tracked.
...
Where is Java Installed on Mac OS X?
I just downloaded Java 7u17 on Mac OS 10.7.5 from here and then successfully installed it. In order to do some JNI programming, I need to know where Java installed on my Mac.
...
What is the difference between sigaction and signal?
I was about to add an extra signal handler to an app we have here and I noticed that the author had used sigaction() to set up the other signal handlers. I was going to use signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
...