Variable

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A variable is a named location which can be assigned a value which can be retrieved and modified if desired. Like functions, variables in APL in general, and NARS2000 in particular, come in two flavors: user variables and system variables.

User variables

User variables come into existence when the creator of a workspace sets the value of the variable. Th rules for naming a user variable are as follows:

-- Do later --

System variables

System variables are created by NARS2000 when the program starts. They begin with the quad symbol , and one or more letters. The current list of system variables is as follows:


System Variables
⎕ALX Attention Latent Expression
⎕CT Comparison Tolerance
⎕DM Diagnostic Message (Read-only)
⎕DT Distribution Type
⎕ELX Error Latent Expression
⎕FC Format Control
⎕FEATURE Feature Control
⎕FPC Floating Point Control
⎕IC Indeterminate Control
⎕IO Index Origin
⎕LR Left-Right Direction Choice
⎕LX Latent Expression
⎕PP Print Precision
⎕PR Prompt Replacement
⎕PW Print Width
⎕RL Random Link
⎕SA Stop Action
⎕WSID Workspace Identifier



See Also
System Commands System Variables and Functions Operators
Keyboard
A+S
Alt ¨ ¯ < > × ÷
Sh ~ ! @ # $ % ^ & * ( ) _ +
Key ` 1 2 3 4 5 6 7 8 9 0 - =
A+S
Alt ? π
Sh Q W E R T Y U I O P { } |
Key q w e r t y u i o p [ ] \
A+S §
Alt
Sh A S D F G H J K L : "
Key a s d f g h j k l ; '
A+S
Alt
Sh Z X C V B N M < > ?
Key z x c v b n m , . /
NARS 2000 Lang
Tool
Bar
+ - × ÷ * ! ? |
= < >
~ § π .. ,
/ \ ¨ .
_ ¯ b e g p r v x



This NARS2000 article is a stub and needs further work.