string - Convert Variables to characters in R -


i want take names of variables in a , results in b

a <- list(eurusd,usdjpy,cadjpy)  b <- c("eurusd", "usdjpy", "cadjpy")

how can instead of writing manually?

first, r evaluates lazily, when assigned list variable a expression list(eurusd, usdjpy, cadjpy) got evaluated. unless 3 objects named , have same names, not possible names.

what try parse output of ls(): 6 character caps names in namespace.

example:

eurusd <- runif(10) usdjpy <- runif(10) cadjpy <- runif(10)  blablabla <- 'unused variable'  currency_pairs <- ls(pattern='^[a-z]{6}$') print(currency_pairs) [1] "cadjpy" "eurusd" "usdjpy"

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