How-To Guides

How-to guides are task-oriented — each one answers a specific "How do I...?" question. They assume you know the basics and need a quick recipe.

• Working with Arrays — selecting, reshaping, sorting, filtering
• Using the Rank Operator — applying functions at specific cell ranks
• Strings and Text — character arrays, splitting, trimming
• File I/O — reading and writing files
• Error Handling — catching errors and inspecting error codes
• Namespaces and Imports — organising and importing code
• Calling Python from APL — the i-beam FFI
• Performance — backends and optimisation tips