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Scalars

Four scalar data types: string, integer, float, boolean.

In expressions/assignments, values of scalar variables are automatically converted to a type appropriate for the context where the context is determined by the operators used

  • Arithmetic operators → numeric context
  • String operators (concatenation etc) → string context
This requires two sets of relational (comparison) operators:
  • Numeric: == != < <= > >= <=>
  • String: eq ne lt le gt ge cmp