笨方法学Ruby第三十二天

the_count = [1,2,3,4,5]
fruits = ['apples', 'oranges', 'pears', 'apricots']
change = [1, 'pennies', 2, 'dimes', 3, 'quarters']

# this first kind of for-loop goes through a list
# in a more traditional style found in other languagues
for number in the_count
	puts "This is count #{number}"
end

# same as above, but in a more Ruby style
# this and the next one are the preferred
# way Ruby for-loops are written
fruits.each do |fruit|
	puts "A fruit of type: #{fruit}"
end

# also we can go through mixed lists too
# note this is yet another style, exactly like above
# but a different syntax (way to write it).
change.each {|i| puts "I got #{i}" }

# we can also bulid lists, first start with an empty one
elements = []

# then use the range operator to do 0 to 5 counts
(0..5).each do |i|
	puts "adding #{i} to the list."
	# pushes the i variable on the *end* of the list
	elements.push(i)
end

# now we can print them out too
elements.each {|i| puts "Element was: #{i}"}

the_count = [1,2,3,4,5]

the_count.each do |number|
	puts "This is count #{number}"
end

elements = []

(0..5).each do |i|
	puts "adding #{i} to the list."
	# pushes the i variable on the *end* of the list
	elements << i
end

LJZN

笨方法学Ruby第三十二天

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