Simple function R ... with no return value.
say.hello <- function(name){
print(sprintf("Hello %s!", name))
}
say.hello("World")
Call function with argument name
print.person <- function(name, age, city){
print(sprintf("%s %d %s", name, age, city))
}
print.person(age = 30, name = "Sam", city = "NY")
Order of the variable does not matter if you pass the argument value by name like the example above
Default value of argument
show.time <- function(tz = ""){
now = Sys.time()
if(tz == ""){
print(now)
}else{
print(format(now, tz = tz))
}
}
show.time("GMT")
show.time()
Return value
gettime <- function(){
return Sys.time()
}