integer to [String]

Question

with this code

digs 0 = []

digs x = x `mod` 1000 : digs (x `div` 1000)

for example: 24889375
we take the result [375,889,24]

how can i make this one ["375","889","024"]

kennytm · Accepted Answer · 2010-10-23 15:45:41Z

3

Prelude> import Text.Printf
Prelude Text.Printf> map (printf "%03d" :: Int -> String) [375,889,24]
["375","889","024"]

answered Oct 23, 2010 at 15:45

kennytm

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1 Comment

@ifan: map (printf "%03d" :: Int -> String) (digs 24889375).

svenningsson · Accepted Answer · 2010-10-23 16:43:00Z

2

The most idiomatic way to do this is to use the functions map and show.

Prelude> map show [375,889,24]
["375","889","024"]

show can be used to convert most values to a string. map applies that function to every element of a list map.

answered Oct 23, 2010 at 16:43

svenningsson

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that supplies ["375","889","24"] except 0