[SugarCube] Sorting Arrays by Values in the Array

joshroby

So I have an array, let's say it's like:

<<set $array = [ [ "Jo" , 3 ] , [ "Sam" , 4 ] , [ "Alex" , 2  ] ] >>

What is the best way to sort that array by the values in the second index of each item? So I'll get "2, 0, 1" or "Alex, Jo, Sam" or similar?

greyelf

note: your example is missing an end square bracket ] at the end of the array definition.

You can use the Javascript Array sort() method combined with an inline function to do what you want, the method's documentation even includes an example of how to compare numbers.

To compare numbers instead of strings, the compare function can simply subtract b from a.

The following is based on your array:

<<set $array = [["Jo", 3], ["Sam", 4], ["Alex", 2]] >>

before: <<print $array>>

after:  <<print $array.sort(function(a,b){return a[1] - b[1];}) >>

WARNING: The sort method modifies the array it is called on!

joshroby

Awesome, thanks so much, greyelf!

(fixed the end bracket)