Tymless Tutorial: Data



   
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Constants

 
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Constants are values which you 'hard-code' into the program. There are two types in Tymless, numbers and text (which must be enclosed by "double quotes").

A 'named' constant is similar to a variable, as it is a name tag to which you can assign a value. However, once assigned, a named constant cannot be changed. If you can use a named constant instead of a variable your program will run faster.

To declare a named constant, use the 'constant' assignment operator ==

GridSize == 8
do GridSize
   do GridSize
      {} ;
   end
   > ; > ; ~
end

In this program, using a named constant means the size of the grid can be changed by altering just one value.

   
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