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How to pass optional arguments to a method in C++?
...ing mode as optional parameter
void myfunc(int blah, int mode = 0)
{
if (mode == 0)
do_something();
else
do_something_else();
}
you can call myfunc in both ways and both are valid
myfunc(10); // Mode will be set to default 0
myfunc(10, 1); // Mode will be set to 1
...
How to get a table cell value using jQuery?
...
If you can, it might be worth using a class attribute on the TD containing the customer ID so you can write:
$('#mytable tr').each(function() {
var customerId = $(this).find(".customerIDCell").html();
});
Essentia...
I need this baby in a month - send me nine women!
Under what circumstances - if any - does adding programmers to a team actually speed development of an already late project?
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efficient circular buffer?
...s defined. O(n) is understandable when the deque can grow to infinity, but if maxlen is given, indexing an element should be constant time.
– lvella
Nov 13 '15 at 21:57
1
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Rake just one migration
...
To expand on what Ryan says, if the table has been dropped from the database outside of Rails, rake db:migrate:up VERSION=my_version may do nothing, because the schema_migrations table still says it is has been run. In the same situation rake db:migrate:...
How to use sidebar with the keyboard in Sublime Text 2 and 3?
...
Ctrl+1 is the shortcut for "Focus Group 1", but if you want to focus the group which was originally focused, use Esc instead (see the unofficial docs). For example, if group 2 is focused, and you then focus the side bar, Esc will return the focus to group 2.
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Get item in the list in Scala?
... do that with lists very often, since linked lists take time to traverse. If you want to index into a collection, use Vector (immutable) or ArrayBuffer (mutable) or possibly Array (which is just a Java array, except again you index into it with (i) instead of [i]).
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How to do what head, tail, more, less, sed do in Powershell? [closed]
...also much faster than above option
gc log.txt | more # or less if you have it installed
gc log.txt | %{ $_ -replace '\d+', '($0)' } # sed
This works well enough for small files, larger ones (more than a few MiB) are probably a bit slow.
The PowerShell Community Extensions incl...
The smallest difference between 2 Angles
...n) -> a - floor(a/n) * n
Or so:
mod = (a, n) -> (a % n + n) % n
If angles are within [-180, 180] this also works:
a = targetA - sourceA
a += (a>180) ? -360 : (a<-180) ? 360 : 0
In a more verbose way:
a = targetA - sourceA
a -= 360 if a > 180
a += 360 if a < -180
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How do I check if a SQL Server text column is empty?
... upvoted, but ... where ISNULL( TRIM( Field), '') = '' is even better ;-), if you feel that " " is an Empty string even with spaces inside
– Kirsten
Jun 13 '19 at 7:26
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