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hashmal/break-concat.md

Created April 13, 2013 20:06
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break-concat.md

In concatenative languages, any subexpression can be replaced with a name that represents the same subexpression.

Reserving operations in Shirka remove this property:

42 -> x   x   <- x      -- works

42 -> x [ x   <- x ] !  -- cannot undefine x

1 -> x   2 -> x   <- x  -- result is 2

1 -> x [ 2 -> x ] <- x  -- result is 1

Be careful when factoring!

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