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Return multiple values to a method caller
... edited Dec 18 '19 at 17:49
Vimes
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answered Apr 23 '12 at 10:24
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How to revert a folder to a particular commit by creating a patch
Here's my history for the folder 'somefolder'
2 Answers
2
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MySQL select 10 random rows from 600K rows fast
...ql/order-by-rand/
For most general case, here is how you do it:
SELECT name
FROM random AS r1 JOIN
(SELECT CEIL(RAND() *
(SELECT MAX(id)
FROM random)) AS id)
AS r2
WHERE r1.id >= r2.id
ORDER BY r1.id ASC
LIMIT 1
This supposes th...
sudo echo “something” >> /etc/privilegedFile doesn't work
...'deb blah ... blah' | sudo tee -a /etc/apt/sources.list > /dev/null
Remember about the (-a/--append) flag!
Just tee works like > and will overwrite your file. tee -a works like >> and will write at the end of the file.
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Adding options to select with javascript
...ause I do not want to create all of the option tags manually. Can you give me some pointers? Thanks
9 Answers
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject:afterDelay: but with an argument like int / double / float ?
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Adding a build configuration in Xcode
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I ran into this same problem and figured it out. Here is a screenshot of the problem. I want to duplicate my "Release" configuration, but the option to do so is disabled. Why?
The answer is hiding behind this little button here (circled ...
What's Go's equivalent of argv[0]?
How can I get my own program's name at runtime? What's Go's equivalent of C/C++'s argv[0]? To me it is useful to generate the usage with the right name.
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Create folder with batch but only if it doesn't already exist
Can anybody tell me how to do the following in in a Windows batch script? ( *.bat ):
9 Answers
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LPCSTR, LPCTSTR and LPTSTR
...he first part of your question:
LPCSTR is a pointer to a const string (LP means Long Pointer)
LPCTSTR is a pointer to a const TCHAR string, (TCHAR being either a wide char or char depending on whether UNICODE is defined in your project)
LPTSTR is a pointer to a (non-const) TCHAR string
In practi...