Webel: SysML4Mathematica: An '@*~' prefix in a @pseudo function (OpaqueBehavior or Activity) represents a cast from any expression to a Type. Example: '@*~OpenerView' casts from any expression to an OpenerView. '@Type~' casts from a specific Type.

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Note kind
CONVENTION
NAMING
PATTERN
POLICY
Policy level
STRICT
UML keywords
OpaqueBehavior
Activity
Mathematica keywords
expression
OpenerView
String
StringForm
Webel Mathematica keywords
«pseudo»
'@*~'
Expr
VExpr
Keywords
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Webel: SysML4Mathematica: An '@*~' prefix in a @pseudo function (OpaqueBehavior or Activity) represents a cast from any expression to a Type. Example: '@*~OpenerView' casts from any expression to an OpenerView. '@Type~' casts from a specific Type.

The '~' was chosen because it is often associated with similarity, and is not otherwise reserved in the Wolfram Language (see however \[Tilde]).

In Webel SysML4Mathematica (v1) a '*' is used to represent any expression.

The '@' is from the «pseudo» function convention:

Visit also: Webel: SysML4Mathematica: An '@' prefix in the name of a ConstraintBlock, Activity, or OpaqueBehavior indicates that it is a "@pseudo" function not represented directly in the Wolfram Language or Webel code libraries (typically for minor maths or logic)

Together they form the prefix '@*~'.

Example: '@*~OpenerView is a cast from any expression to an OpenerView.

The notation can be extended to also cover more specific casts. Example: '@String~StringForm' is a cast from a String to a StringForm.

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[CONVENTION, MODELLING, NAMING]{RECOMMENDED} Webel: SysML4Mathematica: An '@' prefix in the name of a ConstraintBlock, Activity, or OpaqueBehavior indicates that it is a "@pseudo" function not represented directly in the Wolfram Language or Webel code libraries (typically for minor maths or logic)
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SECTION: Modelling the Wolfram Language in SysMLv1 and related Webel coding conventions
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