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→Summary of rules: moved to Function composition
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|<source lang=apl>⍺ (g h) ⍵</source>|| {{←→}} ||<source lang=apl>⍺ g (h ⍵)</source> | |<source lang=apl>⍺ (g h) ⍵</source>|| {{←→}} ||<source lang=apl>⍺ g (h ⍵)</source> | ||
|} | |} | ||
=== Problems caused by function-operator overloading === | === Problems caused by function-operator overloading === | ||
Trains that use a [[Function-operator_overloading|hybrid function-operator]] in its [[function]] role can run into the problems with the hybrid being parsed as a monadic [[operator]] instead of as a function. This happens when a function appears to the immediate left of the hybrid, causing this function to be bound as the hybrid's operand — the hybrid taking on an operator role — rather than supplying a left [[argument]] or post-processing the result. | Trains that use a [[Function-operator_overloading|hybrid function-operator]] in its [[function]] role can run into the problems with the hybrid being parsed as a monadic [[operator]] instead of as a function. This happens when a function appears to the immediate left of the hybrid, causing this function to be bound as the hybrid's operand — the hybrid taking on an operator role — rather than supplying a left [[argument]] or post-processing the result. | ||
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== External links == | == External links == | ||
=== Tutorials === | === Tutorials === | ||
<div style="column-width:30em"> | |||
==== In text form ==== | |||
* [[Learning APL]]: [https://xpqz.github.io/learnapl/tacit.html Trainspotting] | * [[Learning APL]]: [https://xpqz.github.io/learnapl/tacit.html Trainspotting] | ||
* [[Documentation_suites#Dyalog_APL|Dyalog documentation]]: [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm version 14.0 release notes] | * [[Documentation_suites#Dyalog_APL|Dyalog documentation]]: [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm version 14.0 release notes] | ||
* [[Dfns workspace]]: [https://dfns.dyalog.com/n_tacit.htm Translation of <nowiki>[dfns]</nowiki> into tacit form] | * [[Dfns workspace]]: [https://dfns.dyalog.com/n_tacit.htm Translation of <nowiki>[dfns]</nowiki> into tacit form] | ||
* [[APL Cultivation]]: [https://chat.stackexchange.com/rooms/52405/conversation/lesson-23-transcribing-to-and-reading-trains Transcribing to and reading trains] | * [[APL Cultivation]]: [https://chat.stackexchange.com/rooms/52405/conversation/lesson-23-transcribing-to-and-reading-trains Transcribing to and reading trains] | ||
* gitonthescene: [https://gist.github.com/gitonthescene/666c77ee3ed0ae0a79cf8e057584b7fd Forks: Spoon fed] | * gitonthescene: [https://gist.github.com/gitonthescene/666c77ee3ed0ae0a79cf8e057584b7fd Forks: Spoon fed] | ||
* gitonthescene: [https://gist.github.com/gitonthescene/5e9c25ab9edd2f2ce0d5ad38d8a8b2b4 Training day] | |||
==== Videos ==== | |||
* [[APLtrainer]]: [https://www.youtube.com/watch?v=kt4lMZbn-so How to read trains in Dyalog APL code] | |||
* [[APLtrainer]]: [https://www.youtube.com/watch?v=A2LqqBosvY0 Function trains in APL] | |||
* [[Dyalog webinar]]: [https://www.youtube.com/watch?v=Enlh5qwwDuY?t=440 Train Spotting in Dyalog APL] | |||
* [[Dyalog '13]]: [https://www.youtube.com/watch?v=7-93GzDqC08 Train Spotting in Version 14.0] | |||
</div> | |||
=== Documentation === | === Documentation === | ||
* [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm Announcement] | * [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm Announcement] | ||