Top "Let" questions

What's the difference between using "let" and "var"?

ECMAScript 6 introduced the let statement. I've heard it that it's described as a local variable, but I'm still not quite …

javascript scope ecmascript-6 var let

Why was the name 'let' chosen for block-scoped variable declarations in JavaScript?

I understand why var takes that name - it is variable, const - it is a constant, but what is …

javascript ecmascript-6 let

In Haskell, when do we use in with let?

In the following code, the last phrase I can put an in in front. Will it change anything? Another question: …

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Are variables declared with let or const hoisted?

I have been playing with ES6 for a while and I noticed that while variables declared with var are hoisted …

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Haskell: Where vs. Let

I am new to Haskell and I am very confused by Where vs. Let. They both seem to provide a …

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Use if else to declare a `let` or `const` to use after the if/else?

I'm not sure why but it seems that I can't call the let or const variables if I declare them …

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Swift Error: Ambiguous reference to member 'subscript'

I'm new to coding and picked up some open source project to get the idea. I'm getting the error: Ambiguous …

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v8 JavaScript performance implications of const, let, and var?

Regardless of functional differences, does using the new keywords 'let' and 'const' have any generalized or specific impact on performance …

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How to "let" in lambda expression?

How can I rewrite this linq query to Entity on with lambda expression? I want to use let keyword or …

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What's the point of lambda in scheme?

I am learning scheme. I know how to use both lambda and let expressions. However I'm struggling to figure out …

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