Created
June 19, 2014 22:39
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Parse semvers, chapter levels, and hierarchy's of numbers separated by dots to a javascript float
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var _ = require('lodash'); | |
var testNumbers = [ | |
'0', | |
'0.1', | |
'0.2', | |
'1', | |
'1.4', | |
'1.9.4', | |
'1.11.4', | |
'1.10', | |
'2.1', | |
'2.34', | |
'55', | |
'43', | |
'33.1', | |
'2.22', | |
]; | |
// Turn strings of dot separated numbers into decimal numbers | |
// the numbers conserve the hierarchical order expressed by the dots | |
// ASSUMPTION: individual numbers (between dots), do not exceed 1000 | |
function parseDot(x) { | |
return x.split('.') | |
.map(function(y) { | |
return parseInt(y, 10); | |
}) | |
.reduce(function(accu, y, i) { | |
return accu + (y/Math.pow(1000, i)); | |
}, 0); | |
} | |
console.log(_.sortBy(testNumbers, parseDot)); |
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