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Merge pull request #273470 from adisbladis/lib-tohexstring-static-values

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lib.toHexString: Statically compute hexDigits attrset
This commit is contained in:
Silvan Mosberger
2023-12-11 17:46:23 +01:00
committed by GitHub
parent 5812c533ed ad647985cf
commit 6d8c22272a
1 changed files with 14 additions and 16 deletions
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30
lib/trivial.nix
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@@ -520,22 +520,20 @@ in {
toHexString 250 => "FA" toHexString 250 => "FA"
*/ */
toHexString = i: toHexString = let
let hexDigits = {
toHexDigit = d: "10" = "A";
if d < 10 "11" = "B";
then toString d "12" = "C";
else "13" = "D";
{ "14" = "E";
"10" = "A"; "15" = "F";
"11" = "B"; };
"12" = "C"; toHexDigit = d:
"13" = "D"; if d < 10
"14" = "E"; then toString d
"15" = "F"; else hexDigits.${toString d};
}.${toString d}; in i: lib.concatMapStrings toHexDigit (toBaseDigits 16 i);
in
lib.concatMapStrings toHexDigit (toBaseDigits 16 i);
/* `toBaseDigits base i` converts the positive integer i to a list of its /* `toBaseDigits base i` converts the positive integer i to a list of its
digits in the given base. For example: digits in the given base. For example: