Defining Constants
Let’s learn how to define variables whose values can never be changed in a Dart program.
Overview
Sometimes we create a variable and assign it a very specific value with the intention of never changing the value. For the program to run successfully, it is of the utmost importance that the value of the variable remains the same throughout its lifetime. To create such a variable, the keywords final
and const
should be used. Before we get into what final
and const
actually do, we need to learn the difference between compile-time and runtime.
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