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Range literals
Learn Range literals in Groovy through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.
Range literals is a focused Groovy lesson inside Syntax and Values. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.
Trace the example from its inputs through Range literals 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 sample8 = [8, 9, 10]
println sample8.sum() // Range literals
For Range literals, 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.