Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

iRules Style Guide

This article (formatted here in collaboration with and from the notes of F5er Jim_Deucker) features an opinionated way to write iRules, which is an extension to the Tcl language. Tcl has its own st...
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Updated May 20, 2024
Version 4.0
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JRahm's avatar
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Christ Follower, Husband, Father, Technologist. I love community and I especially love THIS community. My background is networking, but I've dabbled in all the F5 iStuff, I'm a recovering Perl guy, and am very much a python enthusiast. Learning alongside all of you in this accelerating industry toward modern apps and architectures.
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Author of vscode extensions for iRules, iApps and Tcl, https://github.com/bitwisecook
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Kai_Wilke
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Jan 10, 2023

From the |& perspective I agree, but 10.) also mixed up "==" and "eq".

Using "eq" in both examples would be correct, since it should compare pure strings and dont do any math...

Cheers, Kai