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PHP expresses two different strings to be the same [duplicate]
..." // false (Note: this is different form PHP)
So in javascript, when you know the type of the result, you could use == instead of === to save one character.
For example, typeof operator always returns a string, so you could just use
typeof foo == 'string' instead of typeof foo === 'string' with...
How to create a hex dump of file containing only the hex characters without spaces in bash?
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Giacomo1968
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answered Apr 10 '10 at 20:27
mark4omark4o
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Right query to get the current number of connections in a PostgreSQL DB
...alent. The equivalent version of the first one would be:
SELECT sum(numbackends) FROM pg_stat_database;
In that case, I would expect that version to be slightly faster than the second one, simply because it has fewer rows to count. But you are not likely going to be able to measure a difference.
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How do I redirect in expressjs while passing some context?
I am using express to make a web app in node.js. This is a simplification of what I have:
8 Answers
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Wrong requestCode in onActivityResult
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mbm29414
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answered May 12 '12 at 14:13
Changwei YaoChangwei...
Static way to get 'Context' in Android?
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Peter Mortensen
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answered Feb 25 '11 at 6:37
Rohit GhatolRohit...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...t: This is a more complete version that shows more differences between [ (aka test) and [[.
The following table shows that whether a variable is quoted or not, whether you use single or double brackets and whether the variable contains only a space are the things that affect whether using a test wi...
Java code for getting current time [duplicate]
....getTime()) );
}
}
You can format SimpleDateFormat in the way you like. For any additional information you can look in java api:
SimpleDateFormat
Calendar
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Kill a postgresql session/connection
How can I kill all my postgresql connections?
20 Answers
20
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Should I put #! (shebang) in Python scripts, and what form should it take?
...hebang line in any script determines the script's ability to be executed like a standalone executable without typing python beforehand in the terminal or when double clicking it in a file manager (when configured properly). It isn't necessary but generally put there so when someone sees the file ope...