Swift's constants and variables

1. Set Constants using Let:

The constant name of the base data type is all uppercase, and if it consists of more than one word, it can be separated by an underscore, such as:

Let Year=6

Let week_of_month=12

2. Use Var to set variables

Usually starts with a lowercase letter, and the remaining words are capitalized, for example:

var maxnumber=100

var minnumber=10;

This article is from the "Ordinary Road" blog, please be sure to keep this source http://linjohn.blog.51cto.com/1026193/1618982

Swift's constants and variables