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Best architectural approaches for building iOS networking applications (REST clients)
...: don't RACify your code too much, because it can become unreadable really fast, especially for newbies. Use it when it can really simplify your goals and logic.
So, read a lot, mix, experiment, and try to pick up the best from different architectural approaches. It is the best advice I can give yo...
Twitter image encoding challenge [closed]
...tures:
Reasonable compression time (around 1 minute for high quality)
Fast decompression (a fraction of a second)
Keeps the original image size (not just the aspect ratio)
Decent reconstruction quality (IMHO)
Message length and character set (ASCII, CJK, Symbols) can be chosen at ru...
What does .SD stand for in data.table in R
...: Instead of Teams[ , .SD[which.max(R)], by = teamID], you can exploit the fast data.table order function: via Teams[order(teamID,-R) , .SD[1L], keyby = teamID], this should be faster.
– bartleby
Nov 22 '17 at 8:59
...
Repeat String - Javascript
...
I've tested the performance of all the proposed approaches.
Here is the fastest variant I've got.
String.prototype.repeat = function(count) {
if (count < 1) return '';
var result = '', pattern = this.valueOf();
while (count > 1) {
if (count & 1) result += pattern;
...
What does multicore assembly language look like?
...reads waiting for a particular condition.
The syscall name itself means "Fast Userspace XXX".
Here is a minimal useless C++ x86_64 / aarch64 example with inline assembly that illustrates basic usage of such instructions mostly for fun:
main.cpp
#include <atomic>
#include <cassert>
#...
Why does Java switch on contiguous ints appear to run faster with added cases?
... variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but not the fastest possible, see Update 2 below) to get the multiplied value is to switch on the exponent :
...
When should I use Arrow functions in ECMAScript 6?
...55 characters per line) appears to support effective reading at normal and fast speeds. This produced the highest level of comprehension . . .
Similar justifications are made for the conditional (ternary) operator, and for single-line if statements.
However, are you really writing the simple math...
Append an object to a list in R in amortized constant time, O(1)?
...nis definitely seem to suggest that the a <- list(a, list(i)) method is fastest, at least for a problem size of 10000, but the results for a single problem size do not address the growth of the solution. For that, we need to run a minimum of two profiling tests, with differing problem sizes:
>...
What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
... to know the pain of trying to get conventions to work in a meaningful and fast way. It can be done with speed, but usually at the cost of being able to change it.
To that end, I take a "code as configuration" approach to Marionette. I don't provide a lot of "configuration" APIs where you can prov...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...-MAC. Using two block cipher encryptions per block it is very slow.
OCB is faster but encumbered by patents. For free (as in freedom) or non-military software the patent holder has granted a free license, though.
GCM is a very fast but arguably complex combination of CTR mode and GHASH, a MAC over t...