["a", "b", "c", "d"] to "a, b, c, d"?

[Martin]

I want to process each element of an array, but the last element
should be handled special. Here is an example:

def p_ary(ary)
str = ""
ary.each do |elem|
str << elem << ", "
end
str.chomp!(", ")
str
end

so p_ary(["a", "f", "x", "test"]) produces "a, f, x, test". The code
works, but isn't there an easier and more general way for this
behaviour?

martinus

 

[Xavier]

I want to process each element of an array, but the last element
should be handled special. Here is an example:

def p_ary(ary)
str = ""
ary.each do |elem|
str << elem << ", "
end
str.chomp!(", ")
str
end

so p_ary(["a", "f", "x", "test"]) produces "a, f, x, test". The code
works, but isn't there an easier and more general way for this
behaviour?

martinus

["a", "f", "x", "test"].join(", ")
=> "a, f, x, test"


Hth.

 

[Martin Hart]

I want to process each element of an array, but the last element
should be handled special. Here is an example:

def p_ary(ary)
str = ""
ary.each do |elem|
str << elem << ", "
end
str.chomp!(", ")
str
end

so p_ary(["a", "f", "x", "test"]) produces "a, f, x, test". The code
works, but isn't there an easier and more general way for this
behaviour?

can't you just use join?

def p_ary(ary)
ary.join(", ")
end

or have i misunderstood you?

Cheers,
Martin

 

[Martin]

can't you just use join?
Thanks! Somehow I have never seen this method...

martinus