Language Features: Difference between revisions
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==System Functions== | ==System Functions== | ||
* [[CR|<apll>⎕CR</apll> (Canonical Representation) | * [[CR|<apll>⎕CR</apll>]] (Canonical Representation) | ||
* [[DM|<apll>⎕DM</apll> (Diagnostic Message) | * [[DM|<apll>⎕DM</apll>]] (Diagnostic Message) | ||
* [[DR|<apll>⎕DR</apll> (Data Representation) | * [[DR|<apll>⎕DR</apll>]] (Data Representation) | ||
* [[ERROR|<apll>⎕ERROR</apll> (Error Signal) | * [[ERROR|<apll>⎕ERROR</apll>]] (Error Signal) | ||
* [[SIZE|<apll>⎕SIZE</apll> (Object Size) | * [[SIZE|<apll>⎕SIZE</apll>]] (Object Size) | ||
* [[SYSID|<apll>⎕SYSID</apll> (System Identifier) | * [[SYSID|<apll>⎕SYSID</apll>]] (System Identifier) | ||
* [[SYSVER|<apll>⎕SYSVER</apll> (System Version) | * [[SYSVER|<apll>⎕SYSVER</apll>]] (System Version) | ||
* [[TC|<apll>⎕TC</apll> | * [[TC|<apll>⎕TC</apll>/<apll>⎕TC</apll>xxx]] (Terminal Control) | ||
* [[TYPE|<apll>⎕TYPE</apll> (Prototype) | * [[TYPE|<apll>⎕TYPE</apll>]] (Prototype) | ||
* [[UCS|<apll>⎕UCS</apll> (Universal Character Set) | * [[UCS|<apll>⎕UCS</apll>]] (Universal Character Set) | ||
==System Variables== | ==System Variables== | ||
* [[Scalar System Variables]] (<apll>⎕CT</apll>, <apll>⎕IO</apll>, <apll>⎕PP</apll>, <apll>⎕PW</apll>, <apll>⎕RL</apll>) | * [[Scalar System Variables]] (<apll>⎕CT</apll>, <apll>⎕IO</apll>, <apll>⎕PP</apll>, <apll>⎕PW</apll>, <apll>⎕RL</apll>) | ||
* [[FC|<apll>⎕FC</apll>]] (Format Control) | * [[FC|<apll>⎕FC</apll>]] (Format Control) | ||
* [[IC|<apll>⎕IC</apll>]] (Indeterminate Control) | * [[IC|<apll>⎕IC</apll>]] (Indeterminate Control) | ||
Revision as of 14:25, 24 April 2008
At the moment, the following sections describe only those language features that are New or Enhanced relative to the Extended APL Standard, or that deserve special comment.
Syntax
- Strand Assignment: (A1 A2 ... An)←R
- Modify Assignment: Af←R
- Modify Strand Assignment: (A1 A2 ... An)f←R
- Function/Operator Assignment: A←f, A←op1, A←op2
- Sink: ←A
Primitive functions
- Index Generator: ⍳R
- Index Of: L⍳R
- Indexing: R[L], R[L]←A, R[L]f←A, L⌷R, L⊃R
- Matrix Inverse/Divide: ⌹R, L⌹R
- Without: L~R
Primitive operators
- Axis: f[X], f op1[X], f op2[X]g
- Composition: f∘g, f∘R, L∘g
- Null: f⊙
- Rank: f⍤X
- Rank with Axis: f⍥[X]
Datatypes
- Infinity: ∞ and ¯∞
- Arithmetic Progression Arrays: 2 3 4⍴⍳24
- Unicode Characters
System Functions
- ⎕CR (Canonical Representation)
- ⎕DM (Diagnostic Message)
- ⎕DR (Data Representation)
- ⎕ERROR (Error Signal)
- ⎕SIZE (Object Size)
- ⎕SYSID (System Identifier)
- ⎕SYSVER (System Version)
- ⎕TC/⎕TCxxx (Terminal Control)
- ⎕TYPE (Prototype)
- ⎕UCS (Universal Character Set)
System Variables
- Scalar System Variables (⎕CT, ⎕IO, ⎕PP, ⎕PW, ⎕RL)
- ⎕FC (Format Control)
- ⎕IC (Indeterminate Control)
