:: (a, b) -> a -package:numhask
base Prelude Data.Tuple, 
hedgehog Hedgehog.Internal.Prelude, 
extra Data.Tuple.Extra, 
base-compat Data.Tuple.Compat Prelude.Compat, 
protolude Protolude, 
relude Relude.Container.Reexport, 
rio RIO.Prelude, 
base-prelude BasePrelude, 
classy-prelude ClassyPrelude, 
numeric-prelude NumericPrelude NumericPrelude.Base, 
Cabal-syntax Distribution.Compat.Prelude, 
basic-prelude CorePrelude, 
universum Universum.Container.Reexport, 
ihaskell IHaskellPrelude, 
basement Basement.Compat.Base Basement.Imports, 
base-compat-batteries Data.Tuple.Compat, 
clash-prelude Clash.HaskellPrelude, 
ghc-lib-parser GHC.Prelude.Basic, 
ghc-internal GHC.Internal.Data.Tuple, 
dimensional Numeric.Units.Dimensional.Prelude, 
rebase Rebase.Prelude, 
mixed-types-num Numeric.MixedTypes.PreludeHiding, 
xmonad-contrib XMonad.Config.Prime, 
constrained-categories Control.Category.Hask, 
copilot-language Copilot.Language.Prelude, 
cabal-install-solver Distribution.Solver.Compat.Prelude, 
incipit-base Incipit.Base, 
LambdaHack Game.LambdaHack.Core.Prelude, 
faktory Faktory.Prelude, 
verset Verset, 
yesod-paginator Yesod.Paginator.Prelude, 
code-conjure Conjure.Utils, 
distribution-opensuse OpenSuse.Prelude, 
hledger-web Hledger.Web.Import Extract the first component of a pair.
Extract the first component of a pair.
Given an Alist, return the key