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5 Cards in this Set
- Front
- Back
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immutable |
an object whose state can not be modified after it is created |
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function binding |
how to define and use functions
fun x0 (x1 : t1, ..., xn : tn) = e;
Syntax: It takes n arguments x1, ... xn of types t1, ..., tn and has an expression e for its body
Type Checking: We type-check the body e in a static environment that:
n addition, for the function binding to type-check, the body e must have the type t, i.e., the result type of x0. t can be any type *
Evaluation: we simply add x0 to the environment as a function that can be called later. x0 is in the dynamic environment in the function body and for subsequent bindings |
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recursive |
a function definition that can use itself. |
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type inference |
refers to the automatic deduction of the data type of an expression |
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function calls |
an expression that uses a separate function to evaluate. |
