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eapply
applies FUN
to the named values from an
environment
and returns the results as a list. The user
can request that all named objects are used (normally names that begin
with a dot are not). The output is not sorted and no enclosing
environments are searched.
This is a primitive function.
eapply(env, FUN, …, all.names = FALSE, USE.NAMES = TRUE)
environment to be used.
the function to be applied, found via
match.fun
.
In the case of functions like +
, %*%
, etc., the
function name must be backquoted or quoted.
optional arguments to FUN
.
a logical indicating whether to apply the function to all values.
logical indicating whether the resulting list should
have names
.
A named (unless USE.NAMES = FALSE
) list. Note that the order of
the components is arbitrary for hashed environments.
# NOT RUN {
require(stats)
env <- new.env(hash = FALSE) # so the order is fixed
env$a <- 1:10
env$beta <- exp(-3:3)
env$logic <- c(TRUE, FALSE, FALSE, TRUE)
# what have we there?
utils::ls.str(env)
# compute the mean for each list element
eapply(env, mean)
unlist(eapply(env, mean, USE.NAMES = FALSE))
# median and quartiles for each element (making use of "..." passing):
eapply(env, quantile, probs = 1:3/4)
eapply(env, quantile)
# }
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