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Is there a “goto” statement in bash?
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@ruakh Actually, many languages allow break LABEL_NAME;, rather than Bash's disgusting break INTEGER;.
– Sapphire_Brick
Jun 29 at 18:37
1
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PHP abstract properties
...cks (say, in the constructor) for the $tablename variable, e.g.:
class Foo_Abstract {
public final function __construct(/*whatever*/) {
if(!isset($this->tablename))
throw new LogicException(get_class($this) . ' must have a $tablename');
}
}
To enforce this for all derived classes...
Inject errors into already validated form?
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Form._errors can be treated like a standard dictionary. It's considered good form to use the ErrorList class, and to append errors to the existing list:
from django.forms.utils import ErrorList
errors = form._errors.setdefault("m...
What is the purpose of std::make_pair vs the constructor of std::pair?
What is the purpose of std::make_pair ?
7 Answers
7
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How to make the python interpreter correctly handle non-ASCII characters in string operations?
...e(u"Â ", u"") But in Python 3, just use quotes. In Python 2, you can from __future__ import unicode_literals to obtain the Python 3 behavior, but be aware this affects the entire current module.
s.replace(u"Â ", u"") will also fail if s is not a unicode string.
string.replace returns a new string ...
How do you round a floating point number in Perl?
...foreach my $i ( 0.5, 1.5, 2.5, 3.5 ) {
printf "$i -> %.0f\n", $i;
}
__END__
0.5 -> 0
1.5 -> 2
2.5 -> 2
3.5 -> 4
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C library function to perform sort
... changed as per most suggestions. I draw the line, @ChrisL, at needing size_t since my arrays never get that big :-) And, @AndreyT, clever though that hack is, I prefer my code to be readable :-)
– paxdiablo
Nov 24 '09 at 11:44
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Finding a substring within a list in Python [duplicate]
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sub = 'abc'
timeit.timeit('[s for s in mylist if sub in s]', setup='from __main__ import mylist, sub', number=100000)
# for me 7.949463844299316 with Python 2.7, 8.568840944994008 with Python 3.4
timeit.timeit('next((s for s in mylist if sub in s), None)', setup='from __main__ import mylist, sub',...
How do I copy the contents of a String to the clipboard in C#? [duplicate]
...y the clipboard.
abstract class StaHelper
{
readonly ManualResetEvent _complete = new ManualResetEvent( false );
public void Go()
{
var thread = new Thread( new ThreadStart( DoWork ) )
{
IsBackground = true,
}
thread.SetApartmentState( Ap...
How do I calculate square root in Python?
...ethod can be computed as: sqrt = x**(float(1)/2)
– VM_AI
Sep 28 '18 at 10:41
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