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rauschma/composing-regexps.js

Created May 16, 2017 00:35
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composing-regexps.js
const RE_YEAR = re`(?<year>[0-9]{4})`;
const RE_MONTH = re`(?<month>[0-9]{2})`;
const RE_DAY = re`(?<day>[0-9]{2})`;
const RE_DATE = re`${RE_YEAR}-${RE_MONTH}-${RE_DAY}`;
const matchObj = RE_DATE.exec('1999-12-31');
const year = matchObj.groups.year; // 1999
const month = matchObj.groups.month; // 12
const day = matchObj.groups.day; // 31
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