Constants in Ruby


Hi friends,

In ruby, “Constants” holds a constant value for the life of the ruby program. Constants are variables whose names are “Capitalized” or “Upper case”.

Ex:

Matz = “yukihiro matsumoto”

puts Matz # => yukihiro matsumoto

if a constant is defined within a “class” or “module”, we can access the constant from within that class or module. if it is defined outside either a class or module, the constant is available globally.

Unlike other languages, a Ruby constant is mutable, that is, we can change its value

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