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Most efficient way to create a zero filled JavaScript array?
...) is painfully slow. (arr = []).length = len; arr.fill(0); is about the fastest solution ive seen anywhere... or at least tied
– Pimp Trizkit
Sep 22 '15 at 16:08
...
How to calculate the number of occurrence of a given character in each row of a column of strings?
...o that internally.
Here's benchmark results (with a scaled up size of the test to 3000 rows)
q.data<-q.data[rep(1:NROW(q.data), 1000),]
str(q.data)
'data.frame': 3000 obs. of 3 variables:
$ number : int 1 2 3 1 2 3 1 2 3 1 ...
$ string : Factor w/ 3 levels "greatgreat","magic",....
How do I test a file upload in rails?
...ng the JSON files to do some user maintenance for our application. In user testing the file upload and processing works, but of course I would like to automate the process of testing the user maintenance in our testing. How can I upload a file to a controller in the functional testing framework?
...
What's the best way to set a single pixel in an HTML5 canvas?
...ba("+r+","+g+","+b+","+(a/255)+")";
ctx.fillRect( x, y, 1, 1 );
You can test the speed of these here: http://jsperf.com/setting-canvas-pixel/9 or here https://www.measurethat.net/Benchmarks/Show/1664/1
I recommend testing against browsers you care about for maximum speed. As of July 2017, fillR...
Why is there a difference in checking null against a value in VB.NET and C#?
...e by an unfortunate belief that it is confusing to have different means of testing equality yield different results, and such confusion might be avoided by having the different forms of equality yield the same results whenever possible.
In reality, the fundamental cause of confusion is a misguided ...
How to programmatically clear application data
I am developing automated tests for an android application (using Robotium). In order to ensure the consistency and reliability of tests, I would like to start each test with clean state (of the application under test). In order to do so, I need to clear the app data. This can be done manually in Se...
switch() statement usage
...vor of switch:
# Simplified to only measure the overhead of switch vs if
test1 <- function(type) {
switch(type,
mean = 1,
median = 2,
trimmed = 3)
}
test2 <- function(type) {
if (type == "mean") 1
else if (type == "median") 2
else if (type == "trimmed") 3
}
syst...
How to test a merge without actually merging first
...
You can also do git checkout --detach and test anything you want. Later, if you want to keep your changes, do git checkout -b new_branch. And if you want to throw your changes away, checkout any branch you want (git checkout master).
– Shayan To...
Really Cheap Command-Line Option Parsing in Ruby
...
+1 for Trollop. I use it for my test automation system and it Just Works. Plus it's so easy to code with that sometimes I rearrange my banner just to experience the joy of it.
– kinofrost
Jul 19 '11 at 8:24
...
Test if characters are in a string
...there's at least 2^9=512 ways to invoke it, that's a lot of work to write, test, and remember... decouple such functions (split them up, remove dependencies on each other, string things are different than regex things are different than vector things). Some of the options are also mutually exclusive...