Ecfun: whichAeqB – R documentation

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whichAeqB

Index of a single match

Return which(A %in% B) if it has length 1; give an error message otherwise.

whichAeqB(A, B, errNoMatch='no match',
                      err2Match='more than one match')

`A`	A vector which may have a single match in `B`.
`B`	A vector of possible matches for `A`.
`errNoMatch`	a character string: error message if no match found.
`err2Match`	a character string: error message if multiple matches found.

a single integer giving the index of the match in A.

Spencer Graves

a2b <- whichAeqB(letters, 'b')


all.equal(a2b, 2)

Functions for 'Ecdat'

v0.2-4

GPL (>= 2)

Authors

Spencer Graves <spencer.graves@effectivedefense.org>

Initial release

2020-10-26