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wsemi

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A support package for web developer.

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import map from 'lodash/map' import isearr from './isearr.mjs' import arrFilterByPnum from './arrFilterByPnum.mjs' /** * 過濾陣列內元素僅保留正數(不含0),並且自動轉數值,再轉log10(Math.log) * * Unit Test: {@link https://github.com/yuda-lyu/wsemi/blob/master/test/arrFilterByPnumAndToLog.test.mjs Github} * @memberOf wsemi * @param {Array} arr 輸入原始陣列 * @returns {Array} 回傳新陣列 * @example * * let arr * * arr = ['abc', '-2.2', '-1.1', -1.1, -1, -0.5, 0, '0', 0.5, 1, 1.1, '1.1', '2.2', 'xyz'] * console.log(arrFilterByPnumAndToLog(arr)) * // => [ * // -0.6931471805599453, * // 0, * // 0.09531017980432493, * // 0.09531017980432493, * // 0.7884573603642703 * // ] * * arr = ['-2.2', '-1.1', -1.1, -1, -0.5, 0, '0'] * console.log(arrFilterByPnumAndToLog(arr)) * // => [] * */ function arrFilterByPnumAndToLog(arr) { //check if (!isearr(arr)) { return [] } //不用cloneDeep //arrFilterByPnum, 有使用cloneDeep arr = arrFilterByPnum(arr) //map arr = map(arr, Math.log) return arr } export default arrFilterByPnumAndToLog