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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...wrapped Optional" vs creating just a regular variable or constant?
If you know that it can be successfully unwrapped then why create an optional in the first place?
For example, why is this:
...
Memory footprint of Haskell data types
...ords, and a Due takes 3.
The Int type is defined as
data Int = I# Int#
now, Int# takes one word, so Int takes 2 in total. Most unboxed types take one word, the exceptions being Int64#, Word64#, and Double# (on a 32-bit machine) which take 2. GHC actually has a cache of small values of type Int...
What is the difference between named and positional parameters in Dart?
...etHttpUrl('example.com', '/index.html', 8080, 5);
Of course, unless you know what 8080 and 5 are, it's hard to tell what those apparently magic numbers are. You can use named optional parameters to create more readable APIs.
Named optional parameters
A parameter wrapped by { } is a named optiona...
initializer_list and move semantics
... const initializer_list at the compiler's discretion, so the user doesn't know whether to expect a const or mutable result from begin and end. But that's just my gut feeling, probably there's a good reason I'm wrong.
Update: I've written an ISO proposal for initializer_list support of move-only typ...
How to get an outline view in sublime texteditor?
...
With a very quick edit this is the result I got on what I'm working on now.
PathMaker.prototype.start = PathMaker.prototype.initiate = function(point){};
PathMaker.prototype.path = function(thePath){};
PathMaker.prototype.add = function(point){};
PathMaker.prototype.addPath = fu...
When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
...ate engine by default, you are always free to choose our own. As far as I know Flask comes in handy for writing APIs endpoints (RESTful services).
"Twisted is an event-driven networking engine written in python". This is a high-performance engine. The main reason for its speed is something called a...
Clone private git repo with dockerfile
...ey was password protected which was causing the problem, a working file is now listed below (for help of future googlers)
FROM ubuntu
MAINTAINER Luke Crooks "luke@pumalo.org"
# Update aptitude with new repo
RUN apt-get update
# Install software
RUN apt-get install -y git
# Make ssh dir
RUN mkdi...
Show data on mouseover of circle
...
I like tipsy. My only issue now is that it points to the upper left corner of the circle, rather than the edge as in that demo. I'm not finding any obvious reason why. jsfiddle.net/scottieb/JwaaV (tipsy at very bottom)
– ScottieB...
Haskell: Lists, Arrays, Vectors, Sequences
..." (putting objects at the end) than any pure linked list data structure I know of, although this is not a persistant data structure so less friendly than Haskell's lists.
The third problem with lists is that they have poor space efficiency. Bunches of extra pointers push up your storage (by a cons...
How to find time complexity of an algorithm
...y 2.
For this reason, we drop all but the largest terms for large N.
So, now we have gone from 2N + 2 to 2N.
Traditionally, we are only interested in performance up to constant factors.
This means that we don't really care if there is some constant multiple of difference in performance when N i...