Node:Values, Next:Colon Definitions, Previous:Constants, Up:Defining Words
A Value behaves like a Constant, but it can be changed.
TO is a parsing word that changes a Values. In Gforth
(not in ANS Forth) you can access (and change) a value also with
>body.
Here are some
examples:
12 Value APPLES \ Define APPLES with an initial value of 12 34 TO APPLES \ Change the value of APPLES. TO is a parsing word 1 ' APPLES >body +! \ Increment APPLES. Non-standard usage. APPLES \ puts 35 on the top of the stack.
Value w "name" -- core-ext ``Value''
TO w "name" -- core-ext ``TO''