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In .NET, which loop runs faster, 'for' or 'foreach'?
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ctford: No it's not. The compiler certainly cannot reorder elements in foreach. foreach is not at all related to functional programming. It's totally an imperative paradigm of programming. You are mis-attributing things happening in TPL and PLINQ to foreach.
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Media Queries: How to target desktop, tablet, and mobile?
...hether you prefer min-, max-, or combinations thereof, be cognizant of the order of your rules, keeping in mind that if multiple rules match the same element, the later rules will override the earlier rules.
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How to impose maxlength on textArea in HTML using JavaScript
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I switched the order of the alert and the value truncate - in the original order, the onkeyup would alert, causing the control to lose focus and the onblur to fire since the field had not been truncated yet.
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How to tell bash that the line continues on the next line
...lumns in length. What is the character or thing to be added to the line in order to indicate that the line continues on the next line?
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Select 50 items from list at random to write to file
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If the list is in random order, you can just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements f...
Copying data from one SQLite database to another
... X.TABLE SELECT * FROM Y.TABLE;
Or, if the columns are not matched up in order:
INSERT INTO X.TABLE(fieldname1, fieldname2) SELECT fieldname1, fieldname2 FROM Y.TABLE;
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PyPy — How can it possibly beat CPython?
... of Python that can be translated by PyPy's translation framework". But in order to be translated, RPython code has to be statically typed (the types are inferred, you don't declare them, but it's still strictly one type per variable), and you can't do things like declaring/modifying functions/class...
Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
...nsumes all subsequent events
For each child view (in reverse order they were added)
If touch is relevant (inside view), child.dispatchTouchEvent()
If it is not handled by a previous, dispatch to next view
If no children handles the event, the listene...
Why is `std::move` named `std::move`?
...by the rest of the program (nobody else has
a reference to the rvalue in order to detect a difference).
If at the time swap was instead presented like this:
template <class T>
void
swap(T& a, T& b)
{
T tmp(cast_to_rvalue(a));
a = cast_to_rvalue(b);
b = cast_to_rvalue(t...
namedtuple and default values for optional keyword arguments
...(Node._fields)
>>> Node()
Node(val=None, left=None, right=None)
Order
In all versions of Python, if you set fewer default values than exist in the namedtuple, the defaults are applied to the rightmost parameters. This allows you to keep some arguments as required arguments.
>>>...