大约有 40,000 项符合查询结果（耗时：0.0576秒） [XML]
Total size of the contents of all the files in a directory [closed]
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@MathiasBynens Reverse the order of the flags (i.e. du -sbh <dir>). Works for me.
– Luis E.
May 30 '13 at 7:52
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How to link a Facebook app with an existing fan page
...ou will find "App Page". There you will be able to create a new page or if all went well, select your page from a list.
I found the info in the little question-mark next to "App page".
I hope this helps.
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How to request a random row in SQL?
...rom that link):
Select a random row with MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
Select a random row with PostgreSQL:
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1
Select a random row with Microsoft SQL Server:
SELECT TOP 1 column FROM table
ORDER BY NEWID()
Select a r...
Error installing mysql2: Failed to build gem native extension
...ew to install open source programs. I did have to install mac Dev tools in order to install homebrew, but after that it was a simple:
brew install mysql
to install mysql. I haven't had a mysql gem problem since.
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What is the difference between decodeURIComponent and decodeURI?
...d the same question, but didn't find the answer here, I made some tests in order to figure out what the difference actually is.
I did this, since I need the encoding for something, which is not URL/URI related.
encodeURIComponent("A") returns "A", it does not encode "A" to "%41"
decodeURIComponent...
What is the difference between a definition and a declaration?
...lly instantiates/implements this identifier. It's what the linker needs in order to link references to those entities. These are definitions corresponding to the above declarations:
int bar;
int g(int lhs, int rhs) {return lhs*rhs;}
double f(int i, double d) {return i+d;}
class foo {};
A definit...
Is there a difference between YES/NO,TRUE/FALSE and true/false in objective-c?
...is intended to be a logical boolean, it will always have this interface in order to preserve binary compatibility. The problems begin when you use non booleans that seem like booleans, for example c standard library application entry function, main returns 0 on success, many end up thinking of this ...
Xcode Debugger: view value of variable
...e line in your code where you want your program to pause, by clicking the border of your Code Area.
Now in the Debug Area look for this buttons and click the one in the middle. You will notice your area is now divided in two.
Now run your application.
When the first Breakpoint is reached du...
How to add Git's branch name to the commit message?
I need some help with a Bash script that will automatically add the git's branch name as a hash in commit messages.
9 Answe...
MySQL search and replace some text in a field
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