Axel Rauschmayer wrote:
Can you explain? What is this copying price and why don’t non-strict
functions have to pay it?
Strict functions have an arguments object that does not alias formal
parameters:
js> function f(x) { print(x); arguments[0] = 42; return x; }
js> f(99)
99
42
js> function g(x) { "use strict"; print(x); arguments[0] = 42; return x; }
js> g(99)
99
99
/be
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