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What is a monad?
...es.
But Haskell also have a dedicated syntax for monad expressions, the do-block, which hides the bind operator altogether:
do a <- [1,2,3]
b <- [a+1]
if b == 3 then [] else [b]
This hides the "plumbing" and lets you focus on the actual operations applied at each step.
In a do-blo...
Locking a file in Python
...' that happens to be atomic.
# This file opener *must* be used in a "with" block.
class AtomicOpen:
# Open the file with arguments provided by user. Then acquire
# a lock on that file object (WARNING: Advisory locking).
def __init__(self, path, *args, **kwargs):
# Open the file a...
What is std::promise?
...task? This is where the std::promise comes in. The promise is the building block for communicating with a future. The principal steps are these:
The calling thread makes a promise.
The calling thread obtains a future from the promise.
The promise, along with function arguments, are moved into a se...
Can I get the name of the currently running function in JavaScript?
... Perfect. That's when JS does not have native constants like PHP does with Magic constants...
– stamster
Jul 3 '19 at 15:41
...
How to simulate a higher resolution screen? [closed]
...an the ones proposed above:
http://www.infobyip.com/testwebsiteresolution.php
It's not as versatile as browsershots.org but it's much faster (a few seconds v. a 45 minute queue).
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How to order events bound with jQuery
Lets say I have a web app which has a page that may contain 4 script blocks - the script I write may be found in one of those blocks, but I do not know which one, that is handled by the controller.
...
width:auto for fields
Newbie CSS question. I thought width:auto for a display:block element meant 'fill available space'. However for an <input> element this doesn't seem to be the case. For example:
...
Update all objects in a collection using LINQ
... The link is broken, it is now available at: codewrecks.com/blog/index.php/2008/08/13/… . There's also a blog comment that links to stackoverflow.com/questions/200574 . In turn, the top question comment links to blogs.msdn.microsoft.com/ericlippert/2009/05/18/… . Perhaps the answer would b...
C# catch a stack overflow exception
...ws a stack overflow exception. The first call is surrounded by a try catch block but the exception is not caught.
9 Answer...
How can I center an absolutely positioned element in a div?
...
Percentage height is relative to the containing block, in this case <html>. But the <html> element doesn't have a height specified so it takes the height of all the content in the document, which is nothing because the only content is absolutely-positioned (tak...