Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
Wolfram`Parser`
ASTNodeQ  |
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The standard vocabulary has ten heads: , , , , , , , , and . returns when the head of node is one of these.
ErrorNode
ASTNodeQ
▪
It is a total predicate - any other expression, including a number or a bare , returns rather than staying unevaluated, so it composes with and pattern tests like .
_?ASTNodeQ
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The test is on the head only; it does not recurse into children or check arity. A malformed would still pass.
BinaryNode[]
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Examples
(3)
Basic Examples
(1)
In[1]:=
 | ASTNodeQ |
 | LeafNode |
Out[1]=
True
In[2]:=
| ASTNodeQ |
| BinaryNode |
 | LeafNode |
| LeafNode |
Out[2]=
True
A plain string is not a node:
In[3]:=
| ASTNodeQ |
Out[3]=
False
Scope
(1)
Properties & Relations
(1)
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