wyncode_methods.rb

puts "String To Number"
puts "'A'.to_i"
puts "\n"
def convert_the_letter_A_into_a_Fixnum(s, *rest)
 	 s.to_i if s.respond_to? :to_i
end

puts "Test Results"
def test_convert_the_letter_A_into_a_Fixnum
	puts convert_the_letter_A_into_a_Fixnum("A") == 0
	#only enter letters
end

test_convert_the_letter_A_into_a_Fixnum

puts "Float Money"
puts "(33.50*100).to_i"
puts "\n"
def convert_to_interger(n, *rest)
	 n.to_i if n.respond_to? :to_i
end

puts "Test Results"
def test_convert_to_interger
	puts convert_to_interger(33.50*100) == 3350 
	puts convert_to_interger("") == 0
	puts convert_to_interger([]) == nil
	puts convert_to_interger({}) == nil
end

test_convert_to_interger

puts "1+1"
puts "1+(1.0), 1.0 +1.0"
puts "\n"

def Write_the_expression_1_plus_1_in_two_different_but_equal_ways(left, right)
	left + right
end
 
puts "Test Results"
def test_Write_the_expression_1_plus_1_in_two_different_but_equal_ways
 	puts Write_the_expression_1_plus_1_in_two_different_but_equal_ways(1, 1) == 2
 	puts Write_the_expression_1_plus_1_in_two_different_but_equal_ways(1.0, 1) == 2
 	
end
test_Write_the_expression_1_plus_1_in_two_different_but_equal_ways

puts "2d Arrays"
puts "[[1,2,3],[:a,:b,:c]].flatten"
puts "\n"
 
def flatten_array(array, *rest)
	array.flatten if array.respond_to? :flatten
end
 
def test_flatten_array
	puts flatten_array([[1,2,3],[:a,:b,:c]]) == [1,2,3,:a,:b,:c]
	puts flatten_array("").nil?
	puts flatten_array({}) == []
	puts flatten_array(3,4,5).nil?
end
 
puts "Test Results"
test_flatten_array
puts "\n"

puts "String Comparisons"
puts <<END
"A" <=> "a"
END
puts "\n"
 
def compare_strings(str1, str2, *rest)
	if str1.is_a?(String) and str2.is_a?(String)
	if str2 > str1 
			-1
	elsif str2 == str1 
			0
	else 
			1
	end
	end
end
 
def test_compare_strings
	puts compare_strings("A","a") == -1
	puts compare_strings("","") == 0
	puts compare_strings("a","A") == 1
	puts compare_strings("nil","1") == 1
	puts compare_strings(2,3).nil?
	puts compare_strings([],[]).nil?
	puts compare_strings({},{}).nil?
end
 
puts "Test Results"
test_compare_strings()
puts "\n"