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Is there a REAL performance difference between INT and VARCHAR primary keys?
... ($i = 0; $i < 1000; $i++) {
$val .= '("' . generate_random_string() . '", ' . rand (0, 10000) . ', "' . ($keys[rand(0, 9)]) . '"),';
}
$val = rtrim($val, ',');
$pdo->query('INSERT INTO jan_char VALUES ' . $val);
}
echo "\n" . ($k + 1) . ' millon(s) ...
CSS Printing: Avoiding cut-in-half DIVs between pages?
... This should work with Webkit. However you may need to put in a few extra divs styled for print with page-break-after: always; after ~ half a dozen of your regular divs.
– ʍǝɥʇɐɯ
May 16 '11 at 10:12
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Most efficient way to determine if a Lua table is empty (contains no entries)?
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This won't work on a table that as strings as index's
– SamHoque
Aug 2 '19 at 0:01
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How to compare binary files to check if they are the same?
...es that also contain some ascii text. Many do, at least begin with a magic string.
– Felix Dombek
Jul 12 '19 at 11:20
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How do I adb pull ALL files of a folder present in SD Card
...ices to make sure your readable, type adb pull sdcard/ sdcard_(the date or extra) <---this file needs to be made in adb directory beforehand. PROFIT!
In other versions type adb pull mnt/sdcard/ sdcard_(the date or extra)
Remember to make file or your either gonna have a mess or it wont work.
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Why would I want stage before committing in Git?
...then you do your work, then you run git add, and then git commit. Why the extra git add step?
The secret here is what Git calls, variously, the index, or the staging area, or sometimes—rarely these days—the cache. These are all names for the same thing.
Edit: I think I may be confusing the te...
Merge/flatten an array of arrays
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Ahh, I found your error. You have an extra pair of square brackets in your notation, should be [].concat([1],[2,3],[4],...).
– Ryan Kennedy
Aug 6 '13 at 15:27
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Best way to add Activity to an Android project in Eclipse?
... a "changes to be performed" list. In this list you can see manifest file, strings.xml etc already checked. So, unless you uncheck them, it is added automatically
– berkuqo
Aug 16 '12 at 8:55
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Create Windows service from executable
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these extras prove useful.. need to be executed as an administrator
sc create <service_name> binpath=<binary_path>
sc stop <service_name>
sc queryex <service_name>
sc delete <service_name>
If y...
What reason is there to use null instead of undefined in JavaScript?
...mply stuff like if(x) ... . Stop it. !x will evaluate to true for an empty string, 0, null, NaN - ie things you probably don't want. If you want to write javascript that isn't awful, always use triple equals === and never use null (use undefined instead). It'll make your life way easier.
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