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How to check if an object is nullable?
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There are two types of nullable - Nullable<T> and reference-type.
Jon has corrected me that it is hard to get type if boxed, but you can with generics:
- so how about below. This is actually testing type T, but using the obj parameter purely for generic type inference ...
How do I add the contents of an iterable to a set?
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Just looked back at my interpreter session and I actually tried this, but thought that it had added the whole list as an element of the set because of the square brackets in the representation of the set. I had never noticed before that they're represented like that.
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What is the use case of noop [:] in bash?
...ver'
done
It's traditional to use : when the shell syntax requires a command but you have nothing to do.
while keep_waiting; do
: # busy-wait
done
The : builtin dates all the way back to the Thompson shell, it was present in Unix v6. : was a label indicator for the Thompson shell's goto state...
What does the 'standalone' directive mean in XML?
What does the ' standalone ' directive mean in an XML document?
5 Answers
5
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Case insensitive regular expression without re.compile?
...nk was added in 1.5. Basically since the beginning of time for all intents and purposes when it comes to Python. It's documented about half way through the first section of this page: docs.python.org/2/library/re.html#regular-expression-syntax
– ArtOfWarfare
M...
What's the most efficient way to test two integer ranges for overlap?
Given two inclusive integer ranges [x1:x2] and [y1:y2], where x1 ≤ x2 and y1 ≤ y2, what is the most efficient way to test whether there is any overlap of the two ranges?
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Indenting code in Sublime text 2?
...press Ctrl + K + D to indent everything so the code is structured nicely and readable. Is there a shortcut in Sublime 2 to do the same?
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Bootstrap Dropdown with Hover
... So much better than long 'full-built' solutions. Just add this and the default 'click' dropdown works on hover without extra changes.
– IamFace
Apr 13 '14 at 19:59
51
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Doing a cleanup action just before Node.js exits
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UPDATE:
You can register a handler for process.on('exit') and in any other case(SIGINT or unhandled exception) to call process.exit()
process.stdin.resume();//so the program will not close instantly
function exitHandler(options, exitCode) {
if (op...
Get record counts for all tables in MySQL database
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Is there any other way to get table_row and table_name ? Because i want exact result not rough estimate. Thank you.
– krunal shah
Apr 1 '11 at 3:35
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