mirror of https://github.com/texmacs/doc.git
66 lines
2.2 KiB
Plaintext
66 lines
2.2 KiB
Plaintext
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<TeXmacs|1.0.3.10>
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<style|tmdoc>
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<\body>
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<tmdoc-title|Operations on tuples>
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<\explain>
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<explain-macro|tuple|expr-1|<with|mode|math|\<cdots\>>|expr-n><explain-synopsis|construct
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a tuple>
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<|explain>
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Forms a tuple from the expressions <src-arg|expr-1> until
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<src-arg|expr-n>.
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</explain>
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<\explain>
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<explain-macro|is-tuple|expr><explain-synopsis|tuple predicate>
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<|explain>
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Tests whether a given expression <src-arg|expr> evaluates to a tuple.
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</explain>
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<\explain>
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<explain-macro|length|expr><explain-synopsis|length of a tuple>
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<|explain>
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If <src-arg|expr> is a tuple, then we return its arity. For instance,
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<inactive*|<length|<tuple|hop|hola>>> evaluates to
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<length|<tuple|hop|hola>>.
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</explain>
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<\explain>
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<explain-macro|look-up|tuple|which><explain-synopsis|access an entry in a
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tuple>
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<|explain>
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Returns the element with index <src-arg|which> in <src-arg|tuple>. For
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instance, <inactive*|<look-up|<tuple|a|b|c>|1>> yields
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<look-up|<tuple|a|b|c>|1>.
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</explain>
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<\explain>
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<explain-macro|range|expr|start|end><explain-synopsis|extract a subtuple>
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<|explain>
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Return the subtuple of <src-arg|expr> starting at position
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<src-arg|start> and ending at position <src-arg|end> (not included). For
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instance, <inactive*|<range|<tuple|a|hola|hop|b|c>|2|4>> evaluates to
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<range|<tuple|a|hola|hop|b|c>|2|4>.
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</explain>
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<\explain>
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<explain-macro|merge|expr-1|<with|mode|math|\<cdots\>>|expr-n><explain-synopsis|concatenate
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tuples>
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<|explain>
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This primitive may be used to concatenate several tuples <src-arg|expr-1>
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until <src-arg|expr-n>. For instance,
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<inactive*|<merge|<tuple|1|2>|<tuple|3|4|5>>> produces
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<merge|<tuple|1|2>|<tuple|3|4|5>>.
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</explain>
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<tmdoc-copyright|2004|Joris van der Hoeven>
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<tmdoc-license|Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version 1.1
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or any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU Free
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Documentation License".>
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</body>
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