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Haskell / Lists and Higher Order

Any and all

Learn Any and all in Haskell through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.

12 min read • Intermediate

Any and all is a focused Haskell lesson inside Lists and Higher Order. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.

Trace the example from its inputs through Any and all and identify the behavior that would change if that construct were removed or replaced. Pay attention to the language-specific rules shown by the syntax, because neighboring lessons intentionally exercise different mechanisms.

Topic-specific example

haskell-0039-4faea32a74.hs
haskell Try It Live 
sample40 :: [Int]
sample40 = [40,41,42]
main = print (sum sample40) -- Any and all
Edge case / engineering note

For Any and all, test one realistic boundary: empty data, invalid input, unavailable resources, lifetime/cleanup, type constraints, or concurrency timing where applicable. A successful happy path is not enough to prove the construct is used correctly.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

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