24 lines
905 B
Factor
24 lines
905 B
Factor
USING: arrays help.markup help.syntax math
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sequences.private vectors strings kernel math.order layouts
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quotations generic.single ;
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IN: math.combinators
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HELP: when-negative
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{ $values
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{ "n" "an integer" } { "true" "a quotation" } { "m" "an integer" } }
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{ $description "When the n value is negative, calls the true quotation. The n value is passed to the quotation." }
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{ $examples "The following two lines are equivalent."
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{ $example "-1 [ 1 + ] when-negative\n-1 dup 0 < [ 1 + ] when"
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"0\n0"
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}
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} ;
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HELP: when-positive
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{ $values
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{ "n" "an integer" } { "true" "a quotation" } { "m" "an integer" } }
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{ $description "When the n value is positive, calls the true quotation. The n value is passed to the quotation." }
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{ $examples "The following two lines are equivalent."
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{ $example "1 [ 1 + ] when-positive\n1 dup 0 > [ 1 + ] when"
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"2\n2"
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}
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} ; |