Module:Shared: Difference between revisions

Module:Shared (view source)

109 bytes removed , 22 February 2022

formatnum: Use faster variant of function

12,704

edits

@@ Line 151: / Line 151: @@
 end
---Stolen from Stack Overflow
 --Adds commas
 function p.formatnum(number)
- local i, j, minus, int, fraction = tostring(number):find('([-]?)(%d+)([.]?%d*)')
+ if tonumber(number) == nil then
+ return number
- -- reverse the int-string and append a comma to all blocks of 3 digits
+ else
- int = int:reverse():gsub("(%d%d%d)", "%1,")
+ local result = number
+ while true do
- -- reverse the int-string back remove an optional comma and put the
+ -- Format in blocks of 3 digits at a time until formatting is complete
- -- optional minus and fractional part back
+ result, k = string.gsub(result, "^(-?%d+)(%d%d%d)", '%1,%2')
- return minus .. int:reverse():gsub("^,", "") .. fraction
+ if k == 0 then
+ break
+ end
+ end
+ return result
+ end
 end