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```
require "benchmark/ips"
class String
def commafy_rev = reverse.scan(/(?:\d*\.)?\d{1,3}-?/).join(",").reverse
def commafy_fwd1 = gsub(/(?!\A)(?=(?:\d{3})+\z)/, ",")
def commafy_fwd2 = scan(/^\d{#{size % 3}}|\d{3}/).join ","
def commafy_fwd3 = (n = size % 3; [self[0...n], self[n..].scan(/\d{3}/)].join ",")
end
str = "32432908"
methods = %i[commafy_fwd1 commafy_fwd2 commafy_fwd3 commafy_rev]
Benchmark.ips_quick(*methods, on:str)
puts
Benchmark.ips_quick(methods, on:(str\*50))
```
why does mastodon keep stripping my blank lines?
it is also stripping "*" from `str*50` ??? wtf
The entire point of this story, perhaps lost due to mastodon, is that regexen are oft the first thing pulled out, but rarely the best solution if you get your head out of em.