gsub - replacing several string occurences in r -

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i want replace several strings one. i've researched , found gsub can replace elements 1 @ time.

if warning saying first 1 used. 

data$evtype <- gsub( c("x","y") , "xy", data$evtype)

i trying sapply

data$evtype <- sapply(data$evtype, gsub, c("x", "y"), "xy") it's been more 5 minutes , still processing. stack overflow message time now. :-/ there elegant short solution this? there package can use this? needs small because need several cases have duplicate names. please help!

thanks useful comments. done frank suggested. gsub( "x|y" , "xy", data$evtype).

instead of using vector.


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