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Is there YAML syntax for sharing part of a list or map?
...With no pure-YAML way to do this, I'm going to implement this as a "syntax transformation" sitting between the YAML parser and the code that actually uses the configuration file. So my core application doesn't have to worry at all about any human-friendly redundancy-avoidance measures, and can just ...
Most efficient way to reverse a numpy array
... np.fliplr(). Here is some code that demonstrates constructing a 1d array, transforming it into a 2d array, flipping it, then converting back into a 1d array. time.clock() will be used to keep time, which is presented in terms of seconds.
import time
import numpy as np
start = time.clock()
x = np....
Large-scale design in Haskell? [closed]
...programs like system daemons in Haskell.
In the end, you live in a monad transformer stack. At the bottom is IO. Above that, every major module (in the abstract sense, not the module-in-a-file sense) maps its necessary state into a layer in that stack. So if you have your database connection co...
Why is this program erroneously rejected by three C++ compilers?
...onal Standard does not specify
— the mechanism by which C programs are transformed for use by a data-processing
system;
— the mechanism by which C programs are invoked for use by a data-processing
system;
— the mechanism by which input data are transformed for use by a C program;
S...
What are the differences between Perl, Python, AWK and sed? [closed]
...e as Perl.
OK - when to use each?
Sed - when you need to do simple text transforms on files.
Awk - when you only need simple formatting and summarisation or transformation of data.
Perl - for almost any task, but especially when the task needs complex regular expressions.
Python - for the same ta...
There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
...do if the list is null! can you suggest something,
– transformer
Mar 15 '17 at 5:05
4
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Simple explanation of MapReduce?
...the way down to the basics for Map and Reduce.
Map is a function which "transforms" items in some kind of list to another kind of item and put them back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double ev...
Prevent “overscrolling” of web page
...tion: none; /* prevent scrolling */
}
body.refreshing .refresher {
transform: translate3d(0,150%,0) scale(1);
z-index: 1;
}
.refresher {
--refresh-width: 55px;
pointer-events: none;
width: var(--refresh-width);
height: var(--refresh-width);
border-radius: 50%;
...
Force DOM redraw/refresh on Chrome/Mac
...eZ fixed the issue without needing extra javascript.
.willnotrender {
transform: translateZ(0);
}
As these painting issues show up mostly in Webkit/Blink, and this fix mostly targets Webkit/Blink, it's preferable in some cases. Especially since many JavaScript solutions cause a reflow and r...
What are free monads?
...d homomorphisms to a category of endofunctors where the arrows are natural transformations, and we look for a functor that is left adjoint to that.
So, how does this relate to the notion of a free monad as it is usually used?
Knowing that something is a free monad, Free f, tells you that giving a...