Value matching
match returns a vector of the positions of (first) matches of
its first argument in its second.
%in% is a binary operator that returns a logical vector of the
length of its left operand indicating if the elements in it have a match
or not.
NOTE: This man page is for the match and %in% S4
generic functions defined in the BiocGenerics package.
See ?base::match for the default methods
(defined in the base package).
Bioconductor packages can define specific methods for objects
(typically vector-like) not supported by the default methods.
match(x, table, nomatch=NA_integer_, incomparables=NULL, ...) x %in% table
x, table |
Vector-like objects (typically of the same class, but not necessarily). |
nomatch, incomparables |
See |
... |
Additional arguments, for use in specific methods. |
The same as the default methods (see ?base::match for
the value returned by the default methods).
Specific methods defined in Bioconductor packages should behave as consistently as possible with the default methods.
The default base::match method (defined in the base
package) doesn't have the ... argument. We've added it to the generic
function defined in the BiocGenerics package in order to allow specific
methods to support additional arguments if needed.
base::match for the default match and
%in% methods.
showMethods for displaying a summary of the
methods defined for a given generic function.
selectMethod for getting the definition of
a specific method.
match,Hits,Hits-method and
%in%,Rle,ANY-method in the S4Vectors
package for examples of specific match and %in%
methods (defined for Hits and
Rle objects, respectively).
BiocGenerics for a summary of all the generics defined in the BiocGenerics package.
match # note the dispatch on the 'x' and 'table' args only
showMethods("match")
selectMethod("match", c("ANY", "ANY")) # the default method
`%in%`
showMethods("%in%")
selectMethod("%in%", c("ANY", "ANY")) # the default methodPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.