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- #!/usr/bin/env node
- 'use strict';
- var ArgumentParser = require('../lib/argparse').ArgumentParser;
- var parser = new ArgumentParser({ description: 'Process some integers.' });
- function sum(arr) {
- return arr.reduce(function (a, b) {
- return a + b;
- }, 0);
- }
- function max(arr) {
- return Math.max.apply(Math, arr);
- }
- parser.addArgument(['integers'], {
- metavar: 'N',
- type: 'int',
- nargs: '+',
- help: 'an integer for the accumulator'
- });
- parser.addArgument(['--sum'], {
- dest: 'accumulate',
- action: 'storeConst',
- constant: sum,
- defaultValue: max,
- help: 'sum the integers (default: find the max)'
- });
- var args = parser.parseArgs('--sum 1 2 -1'.split(' '));
- console.log(args.accumulate(args.integers));
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