Re^4: Reverse Polish Notation Question

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Re^5: Reverse Polish Notation Question by Anonymous Monk on May 02, 2015 at 02:05 UTC
Because the 2 and the 4 are two separate operands.	[reply]
Re^6: Reverse Polish Notation Question by nat47 (Sexton) on May 02, 2015 at 02:09 UTC
Sorry, I was looking at that because when I've been trying to process long strings I've been getting the error "Modification of non-creatable array value attempted, subscript -2", I fixed it, I needed spaces after everything	[reply]
Re^7: Reverse Polish Notation Question by Anonymous Monk on May 02, 2015 at 03:06 UTC
That is caused by stack underflow. Add a check for it. For any operator, there must be at least two operands on the stack.	[reply]