26 lines
1.2 KiB
Factor
26 lines
1.2 KiB
Factor
IN: eval
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USING: help.markup help.syntax strings io effects ;
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HELP: eval
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{ $values { "str" string } { "effect" effect } }
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{ $description "Parses Factor source code from a string, and calls the resulting quotation, which must have the given stack effect." }
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{ $errors "Throws an error if the input is malformed, or if the evaluation itself throws an error." } ;
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HELP: eval(
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{ $syntax "eval( inputs -- outputs )" }
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{ $description "Parses Factor source code from the string at the top of the stack, and calls the resulting quotation, which must have the given stack effect." }
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{ $errors "Throws an error if the input is malformed, or if the evaluation itself throws an error." } ;
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HELP: eval>string
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{ $values { "str" string } { "output" string } }
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{ $description "Evaluates the Factor code in " { $snippet "str" } " with " { $link output-stream } " rebound to a string output stream, then outputs the resulting string. The code in the string must not take or leave any values on the stack." } ;
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ARTICLE: "eval" "Evaluating strings at runtime"
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"The " { $vocab-link "eval" } " vocabulary implements support for evaluating strings at runtime."
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{ $subsections
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POSTPONE: eval(
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eval>string
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} ;
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ABOUT: "eval"
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