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How to test if string exists in file with Bash?
...
grep -Fxq "$FILENAME" my_list.txt
The exit status is 0 (true) if the name was found, 1 (false) if not, so:
if grep -Fxq "$FILENAME" my_list.txt
then
# code if found
else
# code if not found
fi
Explanation
Here are the relevant sections of the man page for grep:
grep [...
How to create CSV Excel file C#? [closed]
... {
if (((DateTime)value).TimeOfDay.TotalSeconds == 0)
return ((DateTime)value).ToString("yyyy-MM-dd");
return ((DateTime)value).ToString("yyyy-MM-dd HH:mm:ss");
}
string output = value.ToString();
if (ou...
jQuery callback on image load (even when the image is cached)
...ction() {
if(this.complete) {
$(this).load(); // For jQuery < 3.0
// $(this).trigger('load'); // For jQuery >= 3.0
}
});
Note the change from .bind() to .one() so the event handler doesn't run twice.
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Socket.IO - how do I get a list of connected sockets/clients?
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In Socket.IO 0.7 you have a clients method on the namespaces, this returns a array of all connected sockets.
API for no namespace:
var clients = io.sockets.clients();
var clients = io.sockets.clients('room'); // all users from room `roo...
What's the difference between SortedList and SortedDictionary?
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edited Feb 23 '13 at 8:08
answered Jun 1 '09 at 16:38
Jo...
Simple explanation of MapReduce?
...you want them summed up, you'd write a loop like this
A = [7, 8, 9]
sum = 0
foreach (item in A) sum = sum + A[item]
But, if you have access to a reduce function, you could write it like this
A = [7, 8, 9]
sum = A.reduce( 0, (x, y) => x + y )
Now it's a little confusing why there are 2 argum...
Bash/sh - difference between && and ;
...mp;.
– peterchaula
Aug 29 '19 at 19:06
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Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
I've installed Visual Studio 2012 Release Preview, and it appears to be fine, but now when I try to use Visual Studio 2010 to compile C++ projects, I get the following error message:
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View a list of recent documents in Vim
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203
Don't use a plugin, unless you want a nice menu. From Vim Documentation: Starting (or :help old...
Start two instances of IntelliJ IDE
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answered May 4 '11 at 20:45
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