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How can I pad an int with leading zeros when using cout
...p = '\0';
// Force calculation of first digit
// (to prevent zero from not printing at all!!!)
*--p = (char)hexchar(x%base);
x = x / base;
// Calculate remaining digits
while(count--)
{
if(x != 0)
{
// Calculate next digit
*--p = ...
How can I add items to an empty set in python
...Set.
The update method in dictionary is used to update the new dictionary from a previous one, like so,
>>> abc = {1: 2}
>>> d.update(abc)
>>> d
{1: 2}
Whereas in sets, it is used to add elements to the set.
>>> D.update([1, 2])
>>> D
set([1, 2])
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Difference between addSubview and insertSubview in UIView class
...
Aside from the specific difference I described in my answer, there is none.
– Nikolai Ruhe
Oct 5 '09 at 16:41
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Determine the number of lines within a text file
.... You don't have to copy the buffer, when using ReadLine. See the answer from @GregBeech. Sorry to rain on your parade.
– Mike Christian
May 31 '12 at 16:55
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What does a type followed by _t (underscore-t) represent?
...e new version, which might be a problem. Restricting the _t usage prevents from refactoring the code. Thus, if you aim to a POSIX compliancy, you should definitely avoid the _t as the Standard states it.
Side note: personally, I try to stick to POSIX because I think it gives good basics for clean p...
Escape a string for a sed replace pattern
In my bash script I have an external (received from user) string, which I should use in sed pattern.
14 Answers
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Fastest way to check if a file exist using standard C++/C++11/C?
... You can also use/test en.cppreference.com/w/cpp/experimental/fs/exists from upcoming standard
– zahir
Aug 22 '14 at 14:10
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How to force a SQL Server 2008 database to go Offline
... use an 'sp_who2 active'/'sp_whoisactive' to see some stubborn connections from scheduled job machines or middletier stuff and run KILL with the SPID number to get rid of them
– Chris Wood
Jun 25 '14 at 14:57
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Do Java arrays have a maximum size?
...AY_SIZE be applied only when you are using an ArrayList? That is different from using an array like int[] array = new int[some_value_here]; isn't it? Why can a constant defined in ArrayList be applied to a normal array (defined with [])? Are they the same behind the scenes?
– ...
Undo a Git commit after push using reverse patch?
...ow; in those cases you will want to make a new commit that put the changes from one commit back to what they were.
– b01
Aug 23 '17 at 1:19
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