Converting numerical arrays into relative fractions
JavaScript
Read fire tipRemoving specific values from an array
JavaScript
Going through Set is cool to filter out duplicates. If you need to filter out specific values instead, you can use this helper.
// takes an array of values and a second array of values to take out of it
const without = (array, valuesToRemove) => {
return array.filter(value => !valuesToRemove.includes(value))
}
// all instances of the values to filter out will be removed
without([0, 8, 12, 15, 4, 8, 15, 23], [8, 15]) // ⇒ [0, 12, 4, 23]
// using `.split()` and `.join()`, we can quickly filter values from strings
without('↑↑↓↓←→←→BA'.split(''), ['←', '↑']).join('') // ⇒ '↓↓→→BA'
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JavaScript
Read fire tipSplitting arrays into chunks
By combining map and slice, we can write a helper function to split large arrays into many similarly sized blocks. This is useful for features like pagination.
JavaScript
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