mirror of https://github.com/hsoft/collapseos.git
17 lines
537 B
Plaintext
17 lines
537 B
Plaintext
Chained comparisons
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The unit "cmp.fs" contains words to facilitate chained
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comparisons with a single reference number. This allows, for
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example, to easily express "a == b or a == c" or "a > b and a <
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c".
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The way those chained comparison words work is that, unlike
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single comparison operators, they don't have a "n1 n2 -- f"
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signature, but rather a "n1 f n2 -- n1 f" signature. That is,
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each operator "carries over" the reference number in addition
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to the latest flag.
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(cont.)
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