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Namespaces in Dyalog APL

An introduction to namespaces in Dyalog APL. 00:00 What are namespaces and what are they used for? 00:35 Overview of this video 01:00 Namespaces as a container for APL stuff which prevent name conflicts 01:46 How to create a namespace with the system function ⎕NS and assign names and execute other expressions within it 02:28 Viewing the contents of a namespace with the workspace explorer or ]map user command 03:14 Pass by reference semantics and mutability 05:12 The root namespace # and the session object ⎕SE 06:08 Find the parent of a namespace with ## 06:29 Check if two references point to the same namespace with the match function ≡ 06:35 Named and unnamed, anonymous namespaces 07:03 The result of dyadic ⎕NS, the namespace path character vector 07:32 Syntax of ⎕NS with an empty right argument. Creating subnamespaces in a single call. 08:16 Copying contents, code and data, from one namespace into another 09:22 Namespaces references are simple scalars 09:40 Convenient arrays of namespace references 10:40 Organise your application and make it modular 11:56 Namespaces as a dictionary or JSON object 12:24 Passing optional arguments to a function with defaults -------------------- GET STARTED Download the latest version of Dyalog: https://www.dyalog.com/downloads TAKE PART IN OUR APL COMPETITIONS THE APL CHALLENGE Learn APL and compete for one of three $100 prizes. Open to all experience levels. https://challenge.dyalog.com THE APL FORGE Got a problem to solve or a library to share? Use Dyalog APL to build something great — and win £2,500 + an expenses-paid trip to present at a Dyalog user meeting. https://forge.dyalog.com/ -------------------- #Namespaces #CodeOrganisation #APL