string-parsing – Page 2

How do I parse a URL query parameters, in Javascript? [duplicate]

January 2, 2023 by Tarik

Today (2.5 years after this answer) you can safely use Array.forEach. As @ricosrealm suggests, decodeURIComponent was used in this function. function getJsonFromUrl(url) { if(!url) url = location.search; var query = url.substr(1); var result = {}; query.split(“&”).forEach(function(part) { var item = part.split(“=”); result[item[0]] = decodeURIComponent(item[1]); }); return result; } actually it’s not that simple, see the … Read more

Convert String to Float in Swift

December 26, 2022 by Tarik

Swift 2.0+ Now with Swift 2.0 you can just use Float(Wage.text) which returns a Float? type. More clear than the below solution which just returns 0. If you want a 0 value for an invalid Float for some reason you can use Float(Wage.text) ?? 0 which will return 0 if it is not a valid … Read more

Safe integer parsing in Ruby

November 12, 2022 by Tarik

Ruby has this functionality built in: Integer(‘1001’) # => 1001 Integer(‘1001 nights’) # ArgumentError: invalid value for Integer: “1001 nights” As noted in answer by Joseph Pecoraro, you might want to watch for strings that are valid non-decimal numbers, such as those starting with 0x for hex and 0b for binary, and potentially more tricky … Read more