Leveraging Rexx Stem Variables for Dynamic Data Mapping
Learn how to use Rexx stem variables and the PARSE instruction to create dynamic associative arrays for rapid prototyping and efficient data mapping.
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rexxPowerShell -ErrorAction: When Stop Beats Continue for Predictable Scripts
Use -ErrorAction Stop per call for predictable try/catch handling instead of relying on $ErrorActionPreference. Understand where the common parameter is ignored and how precedence works.
powershellAdopting Bash Strict Mode for Reliable CI Scripts
Learn how Bash strict mode (set -euo pipefail plus IFS hygiene) makes CI scripts fail fast, catches typos and broken pipelines, and what trade‑offs to watch.
bashUsing Rexx Stem Variables to Build and Iterate Indexed Collections
Learn how to use Rexx stem variables as indexed lists: set a stem default, store the count in tail 0, iterate with a DO loop, and avoid common pitfalls like unset tails and stem‑wide drops.
Stop Writing Text to the Pipeline: Why PSCustomObject Pays Off in PowerShell Scripts
Ad‑hoc text output dies at the console. Emitting [pscustomobject] instead makes PowerShell scripts reusable by Format-*, ConvertTo-*, and Export-* cmdlets, with a few allocation and serialization trade‑offs worth understanding.
Implementing Cooperative Multitasking with Lua Coroutines: A Practical Guide
Learn how to use Lua coroutines for cooperative multitasking: define yielding workers, create and drive coroutines, check status, and handle errors and cleanup.
luaDesigning Rexx Automation Scripts Around Dynamic Typing and Variable Scope
An architecture note on designing Rexx automation scripts around its string-everything typing and flexible variable scoping — where the model fits, the smallest safe structure, and the failure modes that should change your design.
Making Zsh Tab‑Completion Work for Your Own Scripts
Learn how to enable Zsh’s programmable completion for your own scripts by writing a simple completion function, linking it with compdef, and verifying the result in a fresh shell.
PowerShell Classes vs Hashtables: Typed Validation for Scripts
PowerShell classes replace error‑prone hashtables with typed, validated objects that support methods and inheritance. A migration example shows validation at assignment, static factories, and version trade‑offs.