commafy
Lib.commafy : string list -> string list
Add commas into a list of strings.
An application commafy [s1,...,sn] yields [s1, ",", ..., ",", sn].
Failure
Never fails.
Example
> commafy ["donkey", "mule", "horse", "camel", "llama"];
val it =
["donkey", ", ", "mule", ", ", "horse", ", ", "camel", ", ", "llama"]:
string list
> String.concat it;
val it = "donkey, mule, horse, camel, llama": string
> commafy ["foo"];
val it = ["foo"]: string list