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Default
Default[
f
], if defined, gives the default value for arguments of the function f obtained with a _. pattern object.
Default[
f
,
i
] gives the default value to use when _. appears as the i
 argument of f.
Default[
f
,
i
,
n
] gives the default value for the i
 argument out of a total of n arguments.
_. represents an optional argument to a function, with a default value specified by Default.
The necessary values for Default[
f
] must always be defined before _. is used as an argument of f.
Values defined for Default[
f
] are stored with the Options values of f.
See the Mathematica book: Section A.5.1.
See also: Options.
Related package: Utilities`FilterOptions`.
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION. | | | |
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