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Groovy / Collections

Sort with closure

Learn Sort with closure in Groovy through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.

12 min read • Intermediate

Sort with closure is a focused Groovy lesson inside Collections. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.

Trace the example from its inputs through Sort with closure 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

groovy-0036-09ac7952a6.groovy
groovy Try It Live 
def multiply = { int a, int b -> a * b }
def timesTen = multiply.curry(10)
assert timesTen(4) == 40
assert [1,2,3].findAll { it > 1 } == [2,3]
Edge case / engineering note

For Sort with closure, 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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