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How can I format a number into a string with leading zeros?
... example of formatting int
String.Format("{0:00000}", 15); // "00015"
or use String Interpolation:
$"{15:00000}"; // "00015"
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Multiply TimeSpan in .NET
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answered Mar 28 '12 at 14:01
Justin PihonyJustin Pihony
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Which characters need to be escaped in HTML?
...onal text
(eg. when using the Arabic or Hebrew scripts). It has no graphic form,
however, so it is difficult to see where these characters are in the
text, and if they are lost or forgotten they could create unexpected
results during later editing. Using (or its numeric character
reference equiv...
E731 do not assign a lambda expression, use a def
... Yes:
def f(x): return 2*x
No:
f = lambda x: 2*x
The first form means that the name of the resulting
function object is specifically 'f' instead of the generic '<lambda>'.
This is more useful for tracebacks and string representations in
general. The use of the assignment ...
C++11 rvalues and move semantics confusion (return statement)
... your first. The std::move on tmp is unnecessary and can actually be a performance pessimization as it will inhibit return value optimization.
The best way to code what you're doing is:
Best practice
std::vector<int> return_vector(void)
{
std::vector<int> tmp {1,2,3,4,5};
return...
What's the idiomatic syntax for prepending to a short python list?
...ation for the missing list.prepend() . Assuming my list is short and performance concerns are negligible, is
4 Answers
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How do browsers pause/change Javascript when tab or window is not active?
...mationFrame to run in different browsers, and gives you the results in the form of a distribution. You can change the number of milliseconds for setInterval to see how it runs under different settings. setTimeout works similarly to a setInterval with respect to delays. requestAnimationFrame generall...
What is getattr() exactly and how do I use it?
...etattr(person, attr_name)
Some practice:
Python 3.4.0 (default, Apr 11 2014, 13:05:11)
>>> class Person():
... name = 'Victor'
... def say(self, what):
... print(self.name, what)
...
>>> getattr(Person, 'name')
'Victor'
>>> attr_name = 'name'
>>&...
Most used parts of Boost [closed]
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answered Nov 28 '08 at 16:01
RobRob
67.3k5050 gold badges149149 silver badges189189 bronze badges
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What does `void 0` mean? [duplicate]
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answered Sep 17 '11 at 4:01
Peter OlsonPeter Olson
115k4545 gold badges183183 silver badges234234 bronze badges
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