They are not arguing about the stdlib including them, but the api they choose. Instead of parseFloat(str) that tries with a system dependant comma or period, ha

They are not arguing about the stdlib including them, but the api they choose. Instead of parseFloat(str) that tries with a system dependant comma or period, have the decimal type be a parameter or have two explicitly named functions. Same with dates. Don't try lots of formats on an arbitrary string, force the user to specify the expected format somehow.