How to implement a isEmpty function

Help
#1

i am beginner for purescript, i want to know

how to implement a isEmpty function ,

can judge Array '' or something else value is empty

like ramda isEmpty

#2

The Data.Foldable.null function will will return True if anything which has a Foldable instance is empty.

https://pursuit.purescript.org/packages/purescript-foldable-traversable/6.0.0/docs/Data.Foldable#v:null

An Array has a Foldable instance, so null will work on an Array.

https://pursuit.purescript.org/packages/purescript-foldable-traversable/6.0.0/docs/Data.Foldable#t:Foldable

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