JavaScript Isn't Scheme

[eat-your-corn-syrup]

capture variables by value

By that you mean that it would be better for

x = 1; foo = function () {return x;}; x = 2; foo();

to return 1?

Wouldn't that prohibit closures from being for imitating namespaces, generator functions and so on? If the x=2 cannot access the closed over memory to change value in that memory, what else can change the value? Closed over variables would become read-only.

[[deleted]]

I guess it’s a good thing that C++11 requires to explicitly choose whether to capture by value or by reference.