How to concatenate two strings with the << operator in Ruby
Overview
Concatenating strings or string concatenation means joining two or more strings together. In Ruby, we can use the plus + operator to do this, or we can use the double less than operator <<. In this shot, we will use the << operator.
Syntax
str1 << str2
Parameters
str1: one of the strings you want to concatenate.str2: the second of the strings you want to concatenate.
Return value
The return value is a new string that is a concatenation of the specified strings.
Code example
In the code example below, we create strings and use the << operator to concatenate them.
# create stringsstr1 = "Milk: "str2 = "2 litres"str3 = "Eggs: "str4 = "12"# concatenate stringsa = str1 << str2b = str3 << str4# print returned valuesputs aputs b
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