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require
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1994-12-20
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require:
Syntax: require NAME ...
Description:
The require command takes Rfile names as operands, and checks
the workspace for a function variable called NAME. If that
function exists, then no action is taken. If the function does
not exist, then the file `NAME.r' is loaded.
More than one NAME can be given on the same
line. Continuations are not allowed.
NAME can contain the `.r' extension that distinguishes Rfiles
(by convention), or NAME can omit the `.r' extension. In
either case a workspace variable without the `.r' extension is
checked for.
Example:
> require roots poly.r bode
The require command syntax is identical to the rfile command,
with the obvious exception of the initial keyword.
The rules for searching the user's RLAB_SEARCH_PATH are the
same as those used with the rfile command.
See Also: COMMAND, KEYWORDS, rfile, load