Language Features: Difference between revisions
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* [[Modify Strand Assignment]]: <apll>(A<sub>1</sub> A<sub>2</sub> ... A<sub>n</sub>)<i>f</i>←R</apll> | * [[Modify Strand Assignment]]: <apll>(A<sub>1</sub> A<sub>2</sub> ... A<sub>n</sub>)<i>f</i>←R</apll> | ||
* [[Function/Operator Assignment]]: <apll>A←<i>f</i></apll>, <apll>A←<i>op1</i></apll>, <apll>A←<i>op2</i></apll> | * [[Function/Operator Assignment]]: <apll>A←<i>f</i></apll>, <apll>A←<i>op1</i></apll>, <apll>A←<i>op2</i></apll> | ||
* [[Selective Assignment]]: <apll>(1 1⍉M)←0</apll> | * [[Selective Assignment]]: e.g., <apll>(1 1⍉M)←0</apll> | ||
* [[Sink]]: <apll>←R</apll> | * [[Sink]]: <apll>←R</apll> | ||
Revision as of 22:11, 3 November 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
- Selective Assignment: e.g., (1 1⍉M)←0
- Sink: ←R
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
- Array Predicates
System Functions
- ⎕AV (Atomic Vector)
- ⎕CR (Canonical Representation)
- ⎕DM (Diagnostic Message)
- ⎕DR (Data Representation)
- ⎕ERROR (Error Signal)
- ⎕MF (Monitor Function)
- ⎕NL (Name List)
- ⎕SIZE (Object Size)
- ⎕SYSID (System Identifier)
- ⎕SYSVER (System Version)
- ⎕TC/⎕TCxxx (Terminal Control)
- ⎕TF (Transfer Form)
- ⎕TYPE (Prototype)
- ⎕UCS (Universal Character Set)
System Variables
- Scalar System Variables (⎕CT, ⎕IO, ⎕PP, ⎕PW, ⎕RL)
- ⎕FC (Format Control)
- ⎕IC (Indeterminate Control)
