hash {hash} | R Documentation |
Preferred constructor for the hash-class
.
hash(...) is.hash(x) as.list.hash(x, all.names = FALSE, ... )
x |
A hash object. |
all.names |
a logical indicating whether to copy all values or (default) only those whose names do not begin with a dot |
... |
Additional arguments passed to the function |
hash
returns a hash object. Key-value pairs may be specified
via the ...
argument as explicity arguments keys
and
values
, as named key-value pairs, as a named vector or as implicit
key, value vectors. See examples below for each type.
Keys and must be coercable to a character vector. Values are restricted to to valid R objects.
See .set
for further details and how key-value vectors of
unequal length are interpretted.
Hashes may be accessed via the standard R accessors [
, [[
and \$
. See hash-accessors
for details.
is.hash
returns a boolean value indicating if the argument is
a hash object.
as.list.hash
coerces the hash to a list.
For hash
, an object of class hash.
Christopher Brown
hash() hash( key=letters, values=1:26 ) hash( 1:3, lapply(1:3, seq, 1 )) hash( a=1, b=2, c=3 ) hash( c(a=1, b=2, c=3) ) hash( list(a=1,b=2,c=3) ) hash( c("foo","bar","baz"), 1:3 ) hash( c("foo","bar","baz"), lapply(1:3, seq, 1 ) ) hash( letters, 1:26 ) h <- hash( letters, 1:26 ) h$a h$b h[[ "a" ]] h[ letters[1:3] ] h$a<-100 h[['a']]<-letters is.hash(h) as.list(h) clear(h) rm(h)