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Miloslav Ciz 2024-08-04 16:49:53 +02:00
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forth.md
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@ -24,7 +24,7 @@ The language operates on an evaluation **[stack](stack.md)**: e.g. the operation
The stack is composed of **cells**: the size and internal representation of the cell is implementation defined. There are no data types, or rather everything is just of type signed int.
Basic abstraction of Forth is so called **word**: a word is simply a string without spaces like `abc` or `1mm#3`. A word represents some operation on stack (and possible other effect such as printing to the console), for example the word `1` adds the number 1 on top of the stack, the word `+` performs the addition on top of the stack etc. The programmer can define his own words which can be seen as "[functions](function.md)" or rather procedures or macros (words don't return anything or take any arguments, they all just invoke some operations on the stack). A word is defined like this:
Basic [abstraction](abstraction.md) of Forth is so called **word**: a word is simply a string without spaces like `abc` or `1mm#3`. A word represents some operation on stack (and possible other effect such as printing to the console), for example the word `1` adds the number 1 on top of the stack, the word `+` performs the addition on top of the stack etc. The programmer can define his own words which can be seen as "[functions](function.md)" or rather procedures or macros (words don't return anything or take any arguments, they all just invoke some operations on the stack). A word is defined like this:
```
: myword operation1 operation2 ... ;