Category:Jsish: Difference between revisions

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* Function definitions can use type specifiers and default values.

While '''Jsish''' can honestly be called a Javascript interpreter, the extensions and differences from standard, form what is, realistically, a different language.

While '''Jsish''' can honestly be called a Javascript interpreter, the extensions and differences from standard, form what is, realistically, a different language. For instance:

nodejs> [1,2] + [2,1]

"1,22,1"

jsish> [1,2] + [2,1];

jsish# [1,2] + [2,1];

0

Typed parameters for functions also sets Jsi apart from other ECMAScript implementations.

prompt$ jsish

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# function foo (a:number, b:string="ok"):number { return a+1; }

variable

/* Demonstrate parameterized types */

# foo('a', 1, 2)

# foo('a', 1, 2);

warn: got 3 args, expected 1-2, calling function foo(a:number, b="ok"):number (at or near "a")

warn: type mismatch for argument arg 1 'a': expected "number" but got "string", in call to 'foo' <a>. (at or near "a")

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warn: type mismatch returned from 'foo': expected "number" but got "string", in call to 'foo' <a1>. (at or near "a")

"a1"

# foo(1)

# foo(1);

2

#