suzanne.soy/racket
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added note about unsupplied-arg

Browse Source 
svn: r10483
This commit is contained in:
Robby Findler 2008-06-27 22:27:31 +00:00
parent 69b4ffc7c0
commit c4be4bd7a5
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
collects/scribblings/reference/contracts.scrbl
View File

@ -453,6 +453,10 @@ If the identifier position of the range contract is
expressions are evaluated when the function is called (and expressions are evaluated when the function is called (and
the underscore is not bound in the range). Otherwise the the underscore is not bound in the range). Otherwise the
range expressions are evaluated when the function returns. range expressions are evaluated when the function returns.
If there are optional arguments that are not supplied, then
the corresponding variables will be bound to a special value
called the @scheme[unsupplied-arg] value.
} }
@defform*/subs[#:literals (any values ->) @defform*/subs[#:literals (any values ->)