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Calling filter returns [duplicate]
...ar with list comprehensions and generator expressions, the above filter is now (almost) equivalent to the following in python3.x:
( x for x in data if func(x) )
As opposed to:
[ x for x in data if func(x) ]
in python 2.x
...
Two forward slashes in a url/src/href attribute [duplicate]
...slashes" are a common shorthand for "whatever protocol is being used right now".
Best known as "protocol relative URLs", they are particularly useful when elements — such as the JS file in your example — could be loaded from either a http or a https context. By using protocol relative URLs, you ...
PHP - Get key name of array value
...; 'a', 'second' => 'b', );
$key = array_search ('a', $arr);
$key will now contain the key for value 'a' (that is, 'first').
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ImportError: No module named dateutil.parser
... I don't think this is accurate. It's a third party lib which has now been ported to python3, but install is still pip3 install python-dateutil for python 3 users
– beetree
Feb 16 at 11:07
...
Mock framework vs MS Fakes frameworks
... like this:
using (ShimsContext.Create())
{
System.Fakes.ShimDateTime.NowGet = () => { return new DateTime(fixedYear, 1, 1); };
}
My worry with shims is that people will start seeing them as "an easier way to unit test" because it doesn't force you to write code the way you should. For a ...
Find if variable is divisible by 2
...iot for asking the question...which (for all the others who don't already know) is a big deal to new jQuery/Javascript developers.
– sadmicrowave
May 13 '10 at 11:54
6
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Why does SIGPIPE exist?
...
You're right, I don't know why I accepted that in the first place. This answer makes sense, though IMO it's odd that e.g. on Linux this laziness is achieved by kernel and not the libc.
– Shea Levy
Mar 19 '14 a...
What is the correct way to create a single-instance WPF application?
...s, it
brings on a lot of overhead, and I wanted something cleaner.
Knowing that I could use a mutex for this (but never having done it
before) I set out to cut down my code and simplify my life.
In the class of my application main I created a static named Mutex:
static class Program
...
Passing Data between View Controllers
...elf didFinishEnteringItem:itemToPassBack];
That's it for ViewControllerB. Now in ViewControllerA.h, tell ViewControllerA to import ViewControllerB and conform to its protocol.
#import "ViewControllerB.h"
@interface ViewControllerA : UIViewController <ViewControllerBDelegate>
In ViewControl...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...avoid for large data, and why := and set() were introduced to data.table.
Now, with our copied newDT we can modify it by reference :
newDT
# a b
# [1,] 1 11
# [2,] 2 200
newDT[2, b := 400]
# a b # See FAQ 2.21 for why this prints newDT
# [1,] 1 11
# [2,] 2 400
.Internal(in...