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go/src/miller/dsl/cst/README.md
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@ -9,7 +9,7 @@ See [go/src/miller/dsl/README.md](https://github.com/johnkerl/miller/blob/master
## Notes
Go is a strongly typed languages, but the AST is polymorphic. This results in if/else or switch statemens as an AST is walked.
Go is a strongly typed language, but the AST is polymorphic. This results in if/else or switch statemens as an AST is walked.
Also, when we modify code, there can be changes in the [BNF grammar](https://github.com/johnkerl/miller/blob/master/go/src/miller/parsing/mlr.bnf) not yet reflected in the [AST](https://github.com/johnkerl/miller/blob/master/go/src/miller/dsl/ast.go). Likewise, there can be AST changes not yet reflected here. (Example: you are partway through adding a new binary operator to the grammar.)