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Composition with rightShift
Learn Composition with rightShift in Groovy through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.
Composition with rightShift is a focused Groovy lesson inside Closures. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.
Trace the example from its inputs through Composition with rightShift 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
def sample30 = [30, 31, 32]
println sample30.sum() // Composition with rightShift
For Composition with rightShift, 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.