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Real-world, little Javascript problem | |
Input is an array of strings. | |
Each string encodes a pair of 3-letter symbols, separated by an underscore '_'. | |
We talk about the left-hand and right-hand symbols that are encoded into the string. | |
E.g. | |
['AED_AFN', 'ALL_AMD', 'AMD_AFN', 'ALL_GBP'] | |
'AED' is the left-hand symbol of the first pair; 'AFN' is the right-hand symbol of the first pair. Etc. | |
We want this data rearranged into an object. |
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const input = ['AED_AFN', 'ALL_AMD', 'AMD_AFN', 'ALL_GBP']; | |
console.log('input:', JSON.stringify(input)); | |
// somewhat functional, somewhat imperative | |
const collectSymbols0 = pairs => { | |
co |
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// See: https://gist.github.com/nealrs/4bdcb6316665338d9a1f7c2b690d6a19 | |
const Excel = require('exceljs'); | |
// create workbook & add worksheet | |
const workbook = new Excel.Workbook(); | |
const worksheet = workbook.addWorksheet('Discography'); | |
// add column headers | |
worksheet.columns = [ |