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Python extract pattern matches
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Kind of late, but both yes and no. group(0) returns the matched text, not the first capture group. The code comment is correct, while you seem to be confusing capture groups and matches. group(1) returns the first capture group.
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How to get the current time in milliseconds from C in Linux?
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(intmax_t)s, ms);
}
If your goal is to measure elapsed time, and your system supports the "monotonic clock" option, then you should consider using CLOCK_MONOTONIC instead of CLOCK_REALTIME.
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How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
...... joker - zero width space. I just used some snippets from google groups and didn't recognize that there are doubled characters, because Idea (11) didn't show them, which was causing problems with parsing config file of my app... I discovered it accidentally in vi.
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How to prevent form from being submitted?
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{
someBug()
return false;
}
returning false here won't be executed and the form will be submitted either way. You should also call preventDefault to prevent the default form action for Ajax form submissions.
function mySubmitFunction(e) {
e.preventDefault();
someBug();
return false;
}...
Set the value of an input field
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Yes, assign an event handler to the input field that wipes the value onclick. Example: elem.onclick = clearField(); // that would point to a function that wipes the field by setting the value to nothing, similar to the answer above.
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Is it necessary to explicitly remove event handlers in C#
...he object which publishes the events which keeps the targets of the event handlers live. So if I have:
publisher.SomeEvent += target.DoSomething;
then publisher has a reference to target but not the other way round.
In your case, the publisher is going to be eligible for garbage collection (assu...
How to overlay images
...DIT: To clarify for your example - you could ignore the visibility:hidden; and kill the :hover execution if you wanted, this was just the way I did it.
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Reset AutoIncrement in SQL Server after Delete
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Issue the following command to reseed mytable to start at 1:
DBCC CHECKIDENT (mytable, RESEED, 0)
Read about it in the Books on Line (BOL, SQL help). Also be careful that you don't have records higher than the seed you are setting.
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Create a folder if it doesn't already exist
...777, true);
}
Note that 0777 is already the default mode for directories and may still be modified by the current umask.
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How to check if a file exists in a folder?
...he file exists in a folder. You might want to use DirectoryInfo.GetFiles() and enumerate the result.
– ogborstad
Feb 10 '15 at 8:50
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