String Module

String.replace : string -> string -> string -> string

Argument order is oldValue -> newValue -> source.

let text = String.replace "-" "_" "a-b-c"

String.indexOf : string -> string -> int option

Argument order is value -> source.

let maybeIndex = String.indexOf "script" "fscript"

String.toLower : string -> string

Converts a string to lowercase using invariant casing.

let lower = String.toLower "FSCRIPT"

String.toUpper : string -> string

Converts a string to uppercase using invariant casing.

let upper = String.toUpper "fscript"

String.substring : int -> int -> string -> string option

Argument order is start -> length -> source. Returns None for invalid ranges.

let maybeSub = String.substring 0 4 "fscript"

String.concat : string -> string list -> string

Joins a list of strings with a separator.

let joined = String.concat "," ["a"; "b"; "c"]

String.split : string -> string -> string list

Argument order is separator -> source. Splits on the exact separator string.

let parts = String.split "," "a,b,c"

String.endsWith : string -> string -> bool

Argument order is suffix -> source. Checks whether the source ends with the suffix.

let isScript = String.endsWith ".fss" "samples/hello.fss"