How necessary are var, let, and const?

Re:How necessary are var, let, and const? by EugeneOZ on Monday June 01, 2015 @10:56AM (#9639013)

Ironically enough, but your example shows where const is shouldn't be used as guarantee of immutability: https://t.co/JIQozGe7Md

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Re:How necessary are var, let, and const? by agumonkey on Monday June 01, 2015 @12:47PM (#9640069)

Isn't that a typical "corner case" in the understanding of dynamic languages bindings ? I think I've seen the same question pop about python. The array binding is constant, its content isn't.

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Re:How necessary are var, let, and const? by EugeneOZ on Monday June 01, 2015 @02:41PM (#9641096)

if value of constant can be changed, it's not constant. In my understanding. And by Wikipedia: http://en.wikipedia.org/wiki/Constant_(computer_programming)

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Re:How necessary are var, let, and const? by agumonkey on Monday June 01, 2015 @03:11PM (#9641340)

That's typical computer lingo / semantic issue. the `const` mean shallow/pointer constant, not deep/structurally constant.

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Re:How necessary are var, let, and const? by bmeck on Tuesday June 02, 2015 @11:10AM (#9646329)

const is not about immutability in JS.

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