Yhn first seen 14 h ago, last 14 min ago, peak #15

Push ifs up and fors down: a programming idiom examined

Original: Push ifs up and fors down: The idiom, its algebra, and its limits

A new essay explores the software engineering idiom 'push ifs up and fors down', which advises structuring code so conditional checks are concentrated in outer layers while loops process collections directly. The piece walks through the algebraic reasoning behind the pattern, particularly in functional and compositional code, and discusses where the rule stops working well and why the simplification it promises can break down in real systems.

Why now: Programmers are debating the practical value and limitations of a widely shared code-structuring principle.

Debasish Ghoshsoftware engineeringfunctional programming

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• Push Ifs Up and Fors Down: The Idiom, Its Algebra, and Its Limits · speckx · 149

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