RFS: Array Map and Multiple Assignments

We show you how to clean up the code from the previous episode using Array#map and Multiple Assignments

[venkatch]

Good one. I like multiple assignments.

[thomasoa]

That code only does the same thing if the input has two names, of course - nothing in it takes "James Earl Carter" and returns the same thing as the orginal code...

[stpaquet]

collect could also have been used instead of map and would have produced the same result.

[stefanmaier]

can you explain the difference between map and each?  I tried some but I don't know want this means.  

2.1.1 :001 > a = ["a", "b", "c"];
2.1.1 :002 >   puts a.map {|item| "map_" +item}
map_a
map_b
map_c
 => nil 
2.1.1 :003 > puts a.each {|item| "map_" +item}
a
b
c
 => nil 
2.1.1 :004 >  a.each do |n| puts "map"+n end
mapa
mapb
mapc
 => ["a", "b", "c"] 
2.1.1 :005 >  a.map do |n| puts "map"+n end
mapa
mapb
mapc
 => [nil, nil, nil] 

#ruby   #map  vs #each  

[estebancastro]

is better using a variable name like "word" instead than "n", "word" is more meaningful... I think.