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See Also
- Interpreter
- Restricted
- Failure
- HoldComplete
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- Interpreter Types
- Expression
- HeldExpression
- InactiveExpression
- SemanticExpression
- InactiveSemanticExpression
- MathExpression
- MathFormula
- WolframLanguageSymbol
- HeldMathExpression
- InactiveMathExpression
- HeldMathFormula
- InactiveMathFormula
- ComputedWolframLanguageSymbol
- Related Guides
-
-
See Also
- Interpreter
- Restricted
- Failure
- HoldComplete
-
- Interpreter Types
- Expression
- HeldExpression
- InactiveExpression
- SemanticExpression
- InactiveSemanticExpression
- MathExpression
- MathFormula
- WolframLanguageSymbol
- HeldMathExpression
- InactiveMathExpression
- HeldMathFormula
- InactiveMathFormula
- ComputedWolframLanguageSymbol
- Related Guides
-
See Also
"HeldSemanticExpression" (Interpreter Type)
Details
- "HeldSemanticExpression" can be used in Interpreter and related constructs, including deployed smart form fields.
- Use of "HeldSemanticExpression" does not require connectivity to the Wolfram Cloud.
- "HeldSemanticExpression" keeps its result unevaluated by wrapping it in HoldComplete .
Allowed Forms
- Any free-form linguistics that represent a valid Wolfram Language expression.
Restriction Specifications
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Restricted ["HeldSemanticExpression" ,symbols] an expression involving only the given symbols (All , Automatic , or an explicit list)Restricted ["HeldSemanticExpression" ,symbols,contexts] an expression involving only the given symbols or symbols in the given contexts (All , Automatic , or an explicit list)Restricted ["HeldSemanticExpression" ,symbols,contexts,resultcontext] an expression involving only the given symbols or symbols in the given contexts, where the new symbols are created in resultcontext
Interpretation
- "HeldSemanticExpression" yields a Wolfram Language expression wrapped in HoldComplete .
Examples
Basic Examples (7)
Interpret expressions and avoid evaluation:
Find out Wolfram Language representations of natural-language queries:
No evaluation is attempted when matching the choices:
By default, all symbols are allowed. Restrict to a list of allowed symbols:
By default, new symbols are created in $Context , but a custom context can be specified:
Specify contexts for the allowed and output symbols:
Prevent the creation of any new symbol:
See Also
Interpreter Restricted Failure HoldComplete
Interpreter Types: Expression HeldExpression InactiveExpression SemanticExpression InactiveSemanticExpression MathExpression MathFormula WolframLanguageSymbol HeldMathExpression InactiveMathExpression HeldMathFormula InactiveMathFormula ComputedWolframLanguageSymbol