Hash: Hash object

In Rfast: A Collection of Efficient and Extremely Fast R Functions

Hash object

Description

Hash object.

Usage

Hash(keys=NULL,values=NULL)
Hash.key.multi(x,...,sep = " ")
## S3 replacement method for class 'Hash'
x[...,sep = " "] <- value
## S3 method for class 'Hash'
x[...,sep = " "]
## S3 method for class 'Hash'
print(x,...)
## S3 method for class 'Hash'
length(x)

Arguments

x	A Hash object, using Hash function.
values	A vector with the values you want to store.
value	The values you want to store.
keys	A vector with keys for each values.
sep	A character value using to separate the multiple keys for each value.
...	One or more values for access or find elements.

Details

If you want to delete a key just insert the global variable "Rfast:::delete".

Hash: Create Hash object where every key has a value. Specify the type from the beggining (for speed). Use the argument "type" with one of the values "new.env, logical, character, integer, numeric". Hash.key.multi: search if key exists. If the keys are multiple, then use the argument "substr" to search inside each multiple for the specific key.

Value

A Hash object.

Author(s)

Manos Papadakis

R implementation and documentation: Manos Papadakis <[e-mail]>.

See Also

hash.list, hash.find

Examples

x <- Hash(rnorm(10),sample(1:10))

x[1,2,13] <- 0.1234 # insert value using multi key. the same as x["1 2 13"] <- 0.1234
x[1,2,3] <- 15 # insert value using multi key. the same as x["1 2 3"] <- 15

Hash.key.multi(x,"1")
x # print Hash object using S3 generic
#x[1,2,3] <- Rfast:::delete # delete multi key. the same as x["1 2 3"] <- NULL
length(x)

Rfast documentation built on Nov. 9, 2023, 5:06 p.m.