Arithmetic evaluation: Difference between revisions
J: minor bit of explanation
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You can also display the syntax tree, for example:
<lang j> parse '1+1'
┌─────────────────────────┬───────┐
│┌───┬───────┬───┬───────┐│┌─┬─┬─┐│
││┌─┐│┌─────┐│┌─┐│┌─────┐│││1│2│3││
│││$│││┌─┬─┐│││+│││┌─┬─┐│││└─┴─┴─┘│
││└─┘│││0│1│││└─┘│││0│1││││ │
││ ││└─┴─┘││ ││└─┴─┘│││ │
││ │└─────┘│ │└─────┘││ │
│└───┴───────┴───┴───────┘│ │
└─────────────────────────┴───────┘</lang>
At the top level, the first box is a list of terminals, and the second box represents their parsed structure, with numbers indexing the respective terminals.
=={{header|Lua}}==
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