(guile.info.gz) Keyword Primitives
Info Catalog
(guile.info.gz) Keyword Procedures
(guile.info.gz) Keywords
21.7.5 Keyword Primitives
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Internally, a keyword is implemented as something like a tagged symbol,
where the tag identifies the keyword as being self-evaluating, and the
symbol, known as the keyword's "dash symbol" has the same name as the
keyword name but prefixed by a single dash. For example, the keyword
`#:name' has the corresponding dash symbol `-name'.
Most keyword objects are constructed automatically by the reader
when it reads a token beginning with `#:'. However, if you need to
construct a keyword object programmatically, you can do so by calling
`make-keyword-from-dash-symbol' with the corresponding dash symbol (as
the reader does). The dash symbol for a keyword object can be
retrieved using the `keyword-dash-symbol' procedure.
-- Scheme Procedure: make-keyword-from-dash-symbol symbol
-- C Function: scm_make_keyword_from_dash_symbol (symbol)
Make a keyword object from a SYMBOL that starts with a dash.
-- Scheme Procedure: keyword? obj
-- C Function: scm_keyword_p (obj)
Return `#t' if the argument OBJ is a keyword, else `#f'.
-- Scheme Procedure: keyword-dash-symbol keyword
-- C Function: scm_keyword_dash_symbol (keyword)
Return the dash symbol for KEYWORD. This is the inverse of
`make-keyword-from-dash-symbol'.
Info Catalog
(guile.info.gz) Keyword Procedures
(guile.info.gz) Keywords
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