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How can I time a code segment for testing performance with Pythons timeit?
...when you set its number argument)
import time
def myfast():
code
n = 10000
t0 = time.time()
for i in range(n): myfast()
t1 = time.time()
total_n = t1-t0
In Windows, as Corey stated in the comment, time.clock() has much higher precision (microsecond instead of second) and is preferred over t...
What is difference between Collection.stream().forEach() and Collection.forEach()?
...ut still under worst situations, looping over 10^5 entries 10^6 times took 100 seconds for the worst performer, so other considerations are more important in virtually all situations.
public int outside = 0;
private void iteratorForEach(List<Integer> integers) {
integers.forEach((ii) ->...
Passing command line arguments to R CMD BATCH
...at invoking it from the command line looks like
> Rscript myScript.R 5 100
[1] 98.46435 100.04626 99.44937 98.52910 100.78853
Edit:
Not that I'd recommend it, but ... using a combination of source() and sink(), you could get Rscript to produce an .Rout file like that produced by R CMD BA...
How to profile methods in Scala?
.../ Now wrap your method calls, for example change this...
val result = 1 to 1000 sum
// ... into this
val result = time { 1 to 1000 sum }
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follo...
Formatting a number with exactly two decimals in JavaScript
...es. May break code with further calculations. Otherwise Math.round(value*100)/100 works better for 2DP.
– UpTheCreek
Aug 2 '12 at 6:11
...
How do I get the width and height of a HTML5 canvas?
...s. This may or may not matter, but in my CSS I set the width and height to 100,100 and the getBoundingClientRect returns 102, 102. clientHeight and clientWidth (or scrollHeight and scrollWidth) return 100 correctly.
– DoomGoober
Mar 30 at 0:15
...
Android splash screen image sizes to fit all devices
...px border has to be in addition to the intended base file dimensions. So a 100x100 9-patch image has to actually have 102x102 (100x100 +1px on top, bottom, left and right)
9-patch images have to end with *.9.png
So you can place 1 dot on either side of your logo (in the top border), and 1 dot abov...
What's the best way to get the last element of an array without deleting it?
...
shuffle = $array = []; $array[1] = "a"; $array[2] = "b"; $array[0] = "c";
100 = $array = []; for($i=0;$i<100;$i++) { $array[] = $i; }
100000 = $array = []; for($i=0;$i<100000;$i++) { $array[] = $i; }
For testing I will use the 5.6.38, 7.2.10 and 7.3.0RC1 PHP docker containers like:
sudo do...
How do I test a file upload in rails?
...ng default rails test with factory girl. Fine below code.
factory :image_100_100 do
image File.new(File.join(::Rails.root.to_s, "/test/images", "100_100.jpg"))
end
Note: you will have to keep an dummy image in /test/images/100_100.jpg.
It works perfectly.
Cheers!
...
How to fix the aspect ratio in ggplot?
... dev.off() sequence.)
library(ggplot2)
df <- data.frame(
x = runif(100, 0, 5),
y = runif(100, 0, 5))
ggplot(df, aes(x=x, y=y)) + geom_point() + coord_fixed()
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