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Fixing "sum(1)" instead of "curriedSum(1)" (l. 42)

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"sum(1)" doesn't return a wrapper, "curriedSum(1)" does.
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Aakodal 2020-03-30 10:34:07 +00:00 • committed by GitHub
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1-js/99-js-misc/03-currying-partials/article.md
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@ -39,7 +39,7 @@ alert( curriedSum(1)(2) ); // 3
As you can see, the implementation is straightforward: it's just two wrappers. As you can see, the implementation is straightforward: it's just two wrappers.
- The result of `curry(func)` is a wrapper `function(a)`. - The result of `curry(func)` is a wrapper `function(a)`.
- When it is called like `sum(1)`, the argument is saved in the Lexical Environment, and a new wrapper is returned `function(b)`. - When it is called like `curriedSum(1)`, the argument is saved in the Lexical Environment, and a new wrapper is returned `function(b)`.
- Then this wrapper is called with `2` as an argument, and it passes the call to the original `sum`. - Then this wrapper is called with `2` as an argument, and it passes the call to the original `sum`.
More advanced implementations of currying, such as [_.curry](https://lodash.com/docs#curry) from lodash library, return a wrapper that allows a function to be called both normally and partially: More advanced implementations of currying, such as [_.curry](https://lodash.com/docs#curry) from lodash library, return a wrapper that allows a function to be called both normally and partially: