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Home/ Questions/Q 172735
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Asked: May 11, 20262026-05-11T13:13:07+00:00 2026-05-11T13:13:07+00:00

Tryng out some smalltalk + TDD + good practices I’ve run into a kinda

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Tryng out some smalltalk + TDD + ‘good practices’ I’ve run into a kinda ugly block:

How do I do an assertion in GNU Smalltalk?

I’m just looking for a simple ifFalse: [Die] kind of thing

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  1. 2026-05-11T13:13:07+00:00Added an answer on May 11, 2026 at 1:13 pm

    This is the code for assert: from Squeak (which I recommend you use rather than GNU):

    assert: aBlock      'Throw an assertion error if aBlock does not evaluates to true.'     aBlock value         ifFalse: [AssertionFailure signal: 'Assertion failed'] 
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