Today, we will describe very shortly what are the differences between const and read only – used to declare immutable variables.

Const

• The value of the constant is assigned during compilation. In binary code, specific values appear instead of a variable.
• The value can only be assigned during the declaration.
• The const values can’t be marked with the static keyword, because the const is itself somehow static.

Readonly

• The readonly value can be set both during the declaration and during the run time of the program when creating a new object using the constructor.
• The readonly can be used with a static modifier.

That’s it! I hope that now you know which one of them you should use in your code. 🙂