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Remove need to specify lib

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zuckerberg 2022-12-03 20:06:30 -07:00
parent 0ca34d3bdc
commit 01b972fe3d
1 changed files with 12 additions and 13 deletions
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25
util.nix
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@ -1,30 +1,29 @@
let let
lib = import <nixpkgs/lib>; lib = import <nixpkgs/lib>;
utils = rec { utils = with lib; rec {
inherit lib;
# Passthrough trace for debugging # Passthrough trace for debugging
pTrace = v: lib.traceSeq v v; pTrace = v: traceSeq v v;
# find the total sum of a int list # find the total sum of a int list
sum = lib.foldr (x: y: x + y) 0; sum = foldr (x: y: x + y) 0;
# splits a list of length two into two params then they're passed to a func # splits a list of length two into two params then they're passed to a func
split = pair: f: f (lib.head pair) (lib.last pair); split = pair: f: f (head pair) (last pair);
# Finds the max value in a list # Finds the max value in a list
maxList = lib.foldr lib.max 0; maxList = foldr max 0;
# Sorts a int list. Greatest value first # Sorts a int list. Greatest value first
sortList = lib.sort (x: y: x > y); sortList = sort (x: y: x > y);
# Cuts a list in half and returns the two parts in a list # Cuts a list in half and returns the two parts in a list
cutInHalf = l: [(lib.take (lib.length l / 2) l) (lib.drop (lib.length l / 2) l)]; cutInHalf = l: [(take (length l / 2) l) (drop (length l / 2) l)];
# Splits a list into a list of lists with length cnt # Splits a list into a list of lists with length cnt
chunksOf = cnt: l: chunksOf = cnt: l:
if lib.length l >= cnt then if length l >= cnt then
[(lib.take cnt l)] ++ chunksOf cnt (lib.drop cnt l) [(take cnt l)] ++ chunksOf cnt (drop cnt l)
else []; else [];
# same as intersectLists but takes an array of lists to intersect instead of just two # same as intersectLists but takes an array of lists to intersect instead of just two
intersectManyLists = l: intersectManyLists = l:
if lib.length l == 0 then [] if length l == 0 then []
else if lib.length l == 1 then lib.head l else if length l == 1 then head l
else lib.intersectLists (lib.head l) (intersectManyLists (lib.tail l)); else intersectLists (head l) (intersectManyLists (tail l));
}; };
in in
lib // lib.strings // builtins // utils lib // lib.strings // builtins // utils