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lib: Add toFunction

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This commit is contained in:
Robert Hensing 2022-03-21 23:06:01 +01:00
parent 6a0b24b276
commit 84274cbc95
2 changed files with 21 additions and 1 deletions
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3
lib/default.nix
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@ -68,7 +68,8 @@ let
bitNot boolToString mergeAttrs flip mapNullable inNixShell isFloat min max
importJSON importTOML warn warnIf throwIfNot checkListOfEnum
info showWarnings nixpkgsVersion version
mod compare splitByAndCompare functionArgs setFunctionArgs isFunction
mod compare splitByAndCompare
functionArgs setFunctionArgs isFunction toFunction
toHexString toBaseDigits;
inherit (self.fixedPoints) fix fix' converge extends composeExtensions
composeManyExtensions makeExtensible makeExtensibleWithCustomName;

19
lib/trivial.nix
View File

@ -403,6 +403,25 @@ rec {
isFunction = f: builtins.isFunction f ||
(f ? __functor && isFunction (f.__functor f));
/*
Turns any non-callable values into constant functions.
Returns callable values as is.
Example:
nix-repl> lib.toFunction 1 2
1
nix-repl> lib.toFunction (x: x + 1) 2
3
*/
toFunction =
# Any value
v:
if isFunction v
then v
else k: v;
/* Convert the given positive integer to a string of its hexadecimal
representation. For example: