String literal

[byhbt]

Problem:

Bit confuse about String Literal in Ruby.

Solution:

What is String?
Object in Ruby.

What is Literal?
The value appears directly in Ruby code.

Example:

╰─$ irb
2.4.0 :005 > 5.times { a = 'test'; puts a.object_id; }
70105430666100
70105430665960
70105430665840
70105430665760
70105430665700
 => 5
2.4.0 :006 > 5.times { a = 'test'.freeze; puts a.object_id }
70105426108320
70105426108320
70105426108320
70105426108320
70105426108320
 => 5

Lesson:

According to The Ruby Programming Language book:

For efficiency, you should avoid using literals within loops.