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fix(challenge): correct terminology and inform of correct array copying (#40045)

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* fix(challenge): correct terminology and inform of correct array copying

* fix(challenge): update text with proposed changes
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Lasse Jørgensen
2020-11-25 17:14:33 +01:00
committed by GitHub
parent f7943d0ad5
commit df44da9dc2
1 changed files with 2 additions and 2 deletions
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curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/refactor-global-variables-out-of-functions.md
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@@ -8,8 +8,8 @@ forumTopicId: 301235
## Description
<section id='description'>
So far, we have seen two distinct principles for functional programming:
1) Don't alter a variable or object - create new variables and objects and return them if need be from a function.
2) Declare function arguments - any computation inside a function depends only on the arguments, and not on any global object or variable.
1) Don't alter a variable or object - create new variables and objects and return them if need be from a function. Hint: using something like <code>var newArr = arrVar</code>, where <code>arrVar</code> is an array will simply create a reference to the existing variable and not a copy. So changing a value in <code>newArr</code> would change the value in <code>arrVar</code>.
2) Declare function parameters - any computation inside a function depends only on the arguments passed to the function, and not on any global object or variable.
Adding one to a number is not very exciting, but we can apply these principles when working with arrays or more complex objects.
</section>