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com.xadecimal.mutable-var
var-scopecljmacro
(var-scope & body)Creates a block scope where you can declare mutable variables using (var <name> <value>) and mutate it using (set! <name> <new-value>).
Mutable variables follow these semantics:
- variables are scoped to their block
- variables are allowed to shadow each other
- inner block scope can reuse the name of an outer block scope variable
- you cannot refer to a variable declared later prior to it being declared
- you cannot redefine the same variable (var i 0) (var i 1), you must instead assign a different value to existing defined variable: (set! i 1)
- when var is primitive, you cannot change the inferred type through mutation, if defined as a long only long values can be set! to it
- inner block scopes see all variables from outer blocks and can access and mutate them
Creates a block scope where you can declare mutable variables using (var <name> <value>) and mutate it using (set! <name> <new-value>). Mutable variables follow these semantics: - variables are scoped to their block - variables are allowed to shadow each other - inner block scope can reuse the name of an outer block scope variable - you cannot refer to a variable declared later prior to it being declared - you cannot redefine the same variable (var i 0) (var i 1), you must instead assign a different value to existing defined variable: (set! i 1) - when var is primitive, you cannot change the inferred type through mutation, if defined as a long only long values can be set! to it - inner block scopes see all variables from outer blocks and can access and mutate them
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