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Set every cell in matrix to 0 if that row or column contains a 0
... using the final row/column to store that information, so I was stuck with extra memory for a pair of Nx1 arrays.
– Dave Sherohman
Dec 8 '08 at 15:44
1
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Is Meyers' implementation of the Singleton pattern thread safe?
...ingleton& instance()
{
static bool initialized = false;
static char s[sizeof( Singleton)];
if (!initialized) {
initialized = true;
new( &s) Singleton(); // call placement new on s to construct it
}
return (*(reinterpret_cast<Singleton*>( &s)))...
Hide div after a few seconds
...s rare that I ever use timers in my code, having that plugin around (read: extra code, bloat) for those few times does not outweigh the cost. If you were writing a lot of code that needed to use timers, and were using jQuery, I can see why this plugin would be very useful to keep with the jQuery syn...
How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...by, generating a queryset of authors, add the annotation (this will add an extra field to the returned values) and finally, you order them by this value
Refer to https://docs.djangoproject.com/en/dev/topics/db/aggregation/ for more insight
Good to note: if using Count, the value passed to Count does...
reformat in vim for a nice column layout
...lumn(1) command.
:%!column -t
The above will parse on delimiters inside string literals which is wrong, so you will likely need pre-processing steps and specifying the delimiter for this file for example:
%!sed 's/","/\&/' | column -t -s '&'
...
What's the easiest way to call a function every 5 seconds in jQuery? [duplicate]
...meout(someFunction, 5000, file, directory)
// YES, setTimeout passes any extra args to
// function being called
}
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Twitter Bootstrap Tabs: Go to Specific Tab on Page Reload or Hyperlink
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I'd add 1 more extra line window.scrollTo(0, 0); to make sure the Window always scroll to the top
– Trung Lê
Apr 23 '12 at 21:27
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MySQL “NOT IN” query
... it is possible that the code responsible for EXISTS makes some kind of an extra check which takes extra time.
[…]
MySQL can optimize all three methods to do a sort of NESTED LOOPS ANTI JOIN.
[…]
However, these three methods generate three different plans which are executed by three di...
What's the difference between an object initializer and a constructor?
...nstances of one or more other classes. For example see File.Create Method (String) (and its overloads) which creates a FileStream object.
– DavidRR
Jan 17 '18 at 18:13
add a c...
Run function from the command line
...function
This works because you are passing the command line argument (a string of the function's name) into locals, a dictionary with a current local symbol table. The parantheses at the end will make the function be called.
update: if you would like the function to accept a parameter from the c...