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| author | Alain Frisch <alain@frisch.fr> | 2016-11-07 17:11:35 +0100 |
|---|---|---|
| committer | David Allsopp <david.allsopp@metastack.com> | 2016-11-07 16:11:35 +0000 |
| commit | 69263a989313ab334f85f68e7c53ba2ff0f049f3 (patch) | |
| tree | 77e4f22f3a356da8f3ef71c391e8680325182305 /stdlib/int32.mli | |
| parent | a02958960640cba8f8058a7c7ca04af99a988097 (diff) | |
| download | ocaml-69263a989313ab334f85f68e7c53ba2ff0f049f3.tar.gz | |
Option-returning variants of stdlib functions (#885)
Provide an xxx_opt alternative for functions raising Not_found
and many instances of Failure/Invalid_arg.
The only exception is the rarely used Buffer.add_substitute, where
the [Not_found] can really be interpreted as an error condition.
Most new functions are implemented directly (instead of wrapping the
raising version). This is for performance reasons and also to avoid
destroying the stacktrace (if the function is used in an exception
handler). One could instead implement the raising versions on top of
the new functions, but there might be a small penalty.
Diffstat (limited to 'stdlib/int32.mli')
| -rw-r--r-- | stdlib/int32.mli | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/stdlib/int32.mli b/stdlib/int32.mli index 249fa23db3..19d7897a22 100644 --- a/stdlib/int32.mli +++ b/stdlib/int32.mli @@ -135,6 +135,11 @@ external of_string : string -> int32 = "caml_int32_of_string" a valid representation of an integer, or if the integer represented exceeds the range of integers representable in type [int32]. *) +val of_string_opt: string -> int32 option +(** Same as [of_string], but return [None] instead of raising. + @since 4.05 *) + + val to_string : int32 -> string (** Return the string representation of its argument, in signed decimal. *) |