APL syntax: Difference between revisions
Jump to navigation
Jump to search
Miraheze>RikedyP |
Miraheze>Adám Brudzewsky No edit summary |
||
| Line 1: | Line 1: | ||
APL's core syntactic principles are: | APL's core syntactic principles are: | ||
* [[Array model|Arrays]] as first class citizens | * [[Array model|Arrays]] as first class citizens | ||
* Functions take arrays as | * Functions take arrays as argument(s) and produce arrays as result | ||
* Operators take functions as | * Functions have long right scope | ||
* Operators take functions and/or arrays as operand(s) and produce derived functions | |||
* Operators have long left scope | |||
== Example array definitions == | == Example array definitions == | ||
| Line 28: | Line 30: | ||
<pre class="language-apl"> | <pre class="language-apl"> | ||
</pre> | </pre> | ||
== Scoping rules == | |||
=== Functions === | |||
=== Operators === | |||
{{APL programming language}} | |||
Revision as of 09:17, 20 September 2019
APL's core syntactic principles are:
- Arrays as first class citizens
- Functions take arrays as argument(s) and produce arrays as result
- Functions have long right scope
- Operators take functions and/or arrays as operand(s) and produce derived functions
- Operators have long left scope
Example array definitions
simplenumvec←1 2 3 4 ⍝ A simple numeric vector
simplecharvec←'ABCD' ⍝ A simple character vector
Example function definition
∇ r←l Tradfn r
[1] ⍝ An infix (dyadic) tradfn
[2] r←l r
∇
Example operator definition
∇ r←larg(Main OVER PreProc)rarg
[1] r←(PreProc larg)Main(PreProc rarg)
∇