Iterating

Common Batch Script Patterns

A catalog of reusable Windows batch scripting idioms — looping over files, parsing command output, handling arguments, and structuring error paths.

Loops: Apply to Each

How Apply to Each and Do Until iterate over data, including concurrency control and performance trade-offs.

Loops in Perl

Master Perl's loop constructs — while, until, for, foreach — along with loop control statements like next, last, and redo.

Loops in PHP

Explains PHP's for, while, do-while, and foreach loops, along with break, continue, and reference-based iteration pitfalls.