Created
December 13, 2017 20:48
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A generic mapper ( when you need to execute several mappings on dataset based on simple rules)
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| /** | |
| * A generic String value mapper | |
| * @param {String} value - the value to mapp | |
| * @param {Array <{re: Regexp, val: {*}}>} mappings - a list of regexp with their mapped Value | |
| * @param {*} defaultValue | |
| */ | |
| function genMapper ( value, mappings , defaultValue){ | |
| const foundValue = mappings.find(({re, val}) => str.match(re)) | |
| return foundValue ? foundValue.value : defaultValue | |
| } | |
| //// example ///// | |
| function completeFruitMapper (incompleteFruit) { | |
| const mappings = [{re: /ban/, val: 'banana'}, {re: /co/, val: 'coconut'}, {re: /ap/, val: 'apple'}] | |
| const defaultValue = 'peach' | |
| return genMapper ( value, mappings , defaultValue) | |
| } | |
| console.log(completeFruitMapper ('pineapple') // apple |
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