Find element
Search a value in an unordered vector.
is_element(x, key)
x |
A vector or matrix with the data. |
key |
A value to check if exists in the vector x. |
Find if the key exists in the vector and return returns TRUE/FALSE if the value is been found. If the vector is unordered it is fast but if the vector is ordered then use binary_search. The functions is written in C++ in order to be as fast as possible.
TRUE/FALSE if the value is been found.
Manos Papadakis
R implementation and documentation: Manos Papadakis <papadakm95@gmail.com>.
binary_search (buit-in R function)
x <- rnorm(500) key <- x[50] b <- is_element(x, key)
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