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How do I get a TextBox to only accept numeric input in WPF?
... should allow what they've typed. In my case I only want to allow numbers, dots and dashes.
private static readonly Regex _regex = new Regex("[^0-9.-]+"); //regex that matches disallowed text
private static bool IsTextAllowed(string text)
{
return !_regex.IsMatch(text);
}
If you want to preve...
What's the difference between VARCHAR and CHAR?
...
@Marco Demaio do you know the reason behind this?
– Dehan de Croos
Aug 9 '17 at 9:38
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Python: Bind an Unbound Method?
...ef __init__(self, val):
self.val = val
something = Thing(21)
def double(self):
return 2 * self.val
bind(something, double)
something.double() # returns 42
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Retrieving Property name from lambda expression
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return propInfo;
}
The source parameter is used so the compiler can do type inference on the method call. You can do the following
var propertyInfo = GetPropertyInfo(someUserObject, u => u.UserID);
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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
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The reason is because when you explicitly do "0" == false, both sides are being converted to numbers, and then the comparison is performed.
When you do: if ("0") console.log("ha"), the string value is being tested. Any non-empty string is true, while an empty string...
MySQL > Table doesn't exist. But it does (or it should)
... command
cp -r /path/to/my/database /var/lib/mysql/new_database
If you do this with a database that uses InnoDB tables, you will get this crazy 'table does not exist' error mentioned above.
The issue is that you need the ib* files in the root of the MySQL datadir (e.g. ibdata1, ib_logfile0 and ...
Best way in asp.net to force https for an entire site?
...wUrl);
}
}
that would go in the global.asax.cs (or global.asax.vb)
i dont know of a way to specify it in the web.config
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format statement in a string resource file
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You do not need to use formatted="false" in your XML. You just need to use fully qualified string format markers - %[POSITION]$[TYPE] (where [POSITION] is the attribute position and [TYPE] is the variable type), rather than the ...
How to make an unaware datetime timezone aware in python
What I need to do
12 Answers
12
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Make xargs handle filenames that contain spaces
...pace characters (tabs, spaces, new lines) as delimiters.
You can narrow it down only for the new line characters ('\n') with -d option like this:
ls *.mp3 | xargs -d '\n' mplayer
It works only with GNU xargs.
For BSD systems, use the -0 option like this:
ls *.mp3 | xargs -0 mplayer
This method is ...