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js exercises: mutability merge
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export const tests = []
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const t = (f) => tests.push(f)
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// id is declared and is a function
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t(() => typeof id === 'function')
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// id take 1 argument
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t(() => id.length === 1)
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// id return numbers back
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t(() => id(5) === 5)
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// id return strings back
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t(() => id('pouet') === 'pouet')
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// id return itself, why not
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t(() => id(id) === id)
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// id return anything really
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t((_) => id(_) === _)
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Object.freeze(tests)
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@ -1,12 +1,23 @@
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export const tests = []
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const t = (f) => tests.push(f)
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// id is declared and is a function
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t(() => typeof id === 'function')
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// id take 1 argument
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t(() => id.length === 1)
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// id return numbers back
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t(() => id(5) === 5)
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// id return strings back
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t(() => id('pouet') === 'pouet')
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// id return itself, why not
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t(() => id(id) === id)
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// id return anything really
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t((_) => id(_) === _)
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// handle simple array
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t(() => getLength([2, 42]) === 2)
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// handle mixed array
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t(() => getLength(['pouet', 4, true]) === 3)
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t(() => getLength(Array(100)) === 100) // handle holey array
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t(() => getLength('salut') === 5) // handle strings
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t(() => getLength([]) === 0) // handle empty arrays
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## Id
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### Instructions
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Create an `id` function that takes one argument and return it
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### Notions
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- [https://nan-academy.github.io/js-training/examples/functions.js](https://nan-academy.github.io/js-training/examples/functions.js)
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## Get Length
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## mutable
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### Instructions
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Create a `getLength` function that takes an array or a string
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and return its length.
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Create the following functions:
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- `id` that takes one argument and return it
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- `getLength` that takes an array or a string and return its length
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### Notions
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- [https://nan-academy.github.io/js-training/examples/functions.js](https://nan-academy.github.io/js-training/examples/functions.js)
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- [https://nan-academy.github.io/js-training/examples/data-structures.js](https://nan-academy.github.io/js-training/examples/data-structures.js)
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- [https://nan-academy.github.io/js-training/examples/get.js](https://nan-academy.github.io/js-training/examples/get.js)
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