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Entity
Entity – a single computable element in PapajScript.
The first entities, Number and String, were introduced on April 26, 2018 with the release of the RPN 0.4.0.
Current usable entity types:
-
Number
, e.g.5, 2, -10, 20.5
etc.
More explanation here. -
String
, e.g."Hello world!", "Shalom!", "h"
etc.
More explanation here.
See the functions for strings in the String package. -
Boolean
, e.g.TRUE, FALSE
See the logical functions here. -
Null
, e.g.NULL
-
Function
, e.g.fun{ -1 * }
etc.
More explanation here. -
Exception
, e.g.EXC
(as of now just basic ones, to be improved) -
Array
, e.g.[]
,[ 2 1 3 7 ]
,[ 10 times rand ]
More explanation here.
See the functions for arrays in the Array package. -
LogicalExpression
, e.g.( x 0 > )
More explanation here. -
DateTime
, e.g."2005-04-02 21:37:00" Date.toDateTime
More explanation here.
See the functions for arrays in the Date package.
Quasi-types:
-
InstructionBlock
, e.g.{ x 2 ^ 2 / }
Planned for the future
Object
File
Dataframe
Current unusable data types:
Unknown
Removed/replaced types:
-
Expression
, e.g.( x 0 > )
– replaced byLogicalExpression
in September 2020
Syntax: X command
Programme Operand | Purpose |
---|---|
toString | convert to a string |
toNumber | convert to a number |
toBoolean | convert to a logical value true or false
|
toArray | build an array from N elements of the stack |
toException | build an exception (if X is a string, then it creates an unraised exception with this string message) |
Date.toDateTime | builds a datetime either from a string or a real number (assuming it represents Unix epoch time) |
raiseException | same as above, but it raises exception too |
Syntax: X command
-
type
returns a string containing entity type, e.g."String"
-
isNumber
,isBoolean
,isString
,isArray
,isNull
,isException
,isLogicalExpression
,isFunction
,isDateTime
– returnTRUE
orFALSE
relatively if an entity is of a type mentioned in the function
Versions of Papaj:
Pre-gen: Bereshit (v.0.0.1), Shemot (v.0.0.2)
Gen1 builds: Aleph (v.0.1.0), Bet (v.0.2.0), Gimel (v.0.2.1), Dalet (v.0.3.0)
Gen2 builds: Hey (v.0.3.1), Vav (v.0.4.0), Zain (v.0.4.1), Chet (v.0.4.2), Tet (v.0.4.3)
Gen3 builds and newer: Yod (v.0.5.0), Khaf (v.0.5.1), Lamed (v.0.5.2), Mem (v.0.5.3), Nun (v.0.5.4)
Development version: Leviathan
Packages of Papaj:
Vanilla, Array, Console, Date, Math, Number, String
Structures of Papaj:
Conditional, Entity, Loop, Variable
Array, Boolean, DateTime, Exception, LogicalExpression, Function, Number, Null, String
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