Re^2: How to Order an Array's Elements to Match Another Array's Element Order

Just a data point, but an alternative way to generate the hash is to use slice assignment. It is faster than using map if %index_map is to be generated many times, e.g. across data sets.

my %index_map;
@index{@array} = (0..$#array);
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Re^3: How to Order an Array's Elements to Match Another Array's Element Order by Eily (Monsignor) on Sep 17, 2019 at 09:40 UTC
Good point :). Although I like it more because it short than because it is fast (I basically treat speed considerations as insignificant until proven otherwise :) )	[reply]
Re^4: How to Order an Array's Elements to Match Another Array's Element Order by swl (Prior) on Sep 17, 2019 at 11:05 UTC
Yes, it's more concise. It does also need to be called a large number of times to be meaningfully faster.	[reply]