30 lines
497 B
Plaintext
30 lines
497 B
Plaintext
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[[painless-identifiers]]
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=== Identifiers
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Specify identifiers to <<declaration, declare>>, <<assignment, assign>>, and
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<<painless-operators, use>> variables, <<dot-operator, access fields>>, and
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<<dot-operator, call methods>>. <<painless-keywords, Keywords>> and
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<<painless-types, types>> cannot be used as identifiers.
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*Grammar*
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[source,ANTLR4]
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----
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ID: [_a-zA-Z] [_a-zA-Z-0-9]*;
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----
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*Examples*
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* Variations of identifiers.
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+
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[source,Painless]
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----
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a
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Z
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id
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list
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list0
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MAP25
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_map25
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Map_25
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----
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