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"]
views:
85answers:
2
+3
A:
Prelude> import Text.Printf
Prelude Text.Printf> map (printf "%03d" :: Int -> String) [375,889,24]
["375","889","024"]
KennyTM
2010-10-23 15:45:41
how can I put this together with the code up there
marco
2010-10-23 15:58:46
@ifan: `map (printf "%03d" :: Int -> String) (digs 24889375)`.
KennyTM
2010-10-23 16:00:35
thank you a lot...
marco
2010-10-23 16:04:08
Any particular reason to use printf instead of show?
svenningsson
2010-10-23 16:43:46
@sven: `show 24 == "24"`, not `"024"`.
KennyTM
2010-10-23 16:55:29
Ah, right. Totally missed that one.
svenningsson
2010-10-26 17:30:13
+1
A:
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.
svenningsson
2010-10-23 16:43:00