Assgnmt - 4 (Random , Hash , Map , Regex Email Check , self method calling)

Assgnmt - 4 (Random , Hash , Map , Regex Email Check , self method calling)

1. 'e' ve 'x' arasindaki harflerden 7 haneli random string ureten bir fonksiyon yaziniz

		2.1.1 :123 > (0...7).map { ('e'..'x').to_a[rand(20)] }.join
		 => "tjtwnpg" 


2. Verilen string'in gecerli mail adresi oldugunu denetleyen bir fonksiyon yaziniz. (Ipucu: Regex)


		2.1.1 :365 >   def is_a_valid_email?(email)
		2.1.1 :366?>   
		2.1.1 :367 >       email_regex = %r{
		2.1.1 :368/>     ^ # Start of string
		2.1.1 :369/> 
		2.1.1 :370/>     [0-9a-z] # First character
		2.1.1 :371/>     [0-9a-z.+]+ # Middle characters
		2.1.1 :372/>     [0-9a-z] # Last character
		2.1.1 :373/> 
		2.1.1 :374/>     @ # Separating @ character
		2.1.1 :375/> 
		2.1.1 :376/>     [0-9a-z] # Domain name begin
		2.1.1 :377/>     [0-9a-z.-]+ # Domain name middle
		2.1.1 :378/>     [0-9a-z] # Domain name end
		2.1.1 :379/> 
		2.1.1 :380/>     $ # End of string
		2.1.1 :381/>   }xi # Case insensitive
		2.1.1 :382?>   
		2.1.1 :383 >       if (email =~ email_regex)
		2.1.1 :384?>          puts "gecerli"
		2.1.1 :385?>       else
		2.1.1 :386 >            puts "gecersiz"
		2.1.1 :387?>       end
		2.1.1 :388?>     
		2.1.1 :389 >     
		2.1.1 :390 >       end
		 => :is_a_valid_email? 
		2.1.1 :391 > 
		2.1.1 :392 >   is_a_valid_email?("musfsdjf")
		gecersiz
		 => nil 
		2.1.1 :393 > is_a_valid_email?("murat@murat.coo")
		gecerli
		 => nil 
		2.1.1 :394 > is_a_valid_email?("murat@murat.com")
		gecerli
		 => nil 
		2.1.1 :395 > 



3. Video diye bir sinif olusturunuz. 

@video.transcode! Deyince 'transcode basladi' yazdirsin


		class Video
			def @self.transcode!()
				puts "transcode basladi"
			end
		end


		muratatak@muratatak ~ $ irb
		2.1.1 :001 > require '/home/muratatak/Documents/ror/assg4/video'
		 => true 
		2.1.1 :002 > @video.transcode!
		transcode basladi
		 => nil 
		2.1.1 :003 > 



4. Preset diye bir sinif olusturun.

Preset.high_definition deyince 'hd ayatlari' yazdirsin


	class Preset
		def self.high_definition
			puts "hd ayatlari"
		end
	end

	muratatak@muratatak ~ $ irb
	2.1.1 :001 > require '/home/muratatak/Documents/ror/assg4/preset'
	 => true 
	2.1.1 :002 > Preset.high_definition
	hd ayatlari
	 => nil 
	2.1.1 :003 > 


5. Ruby'nin File sinifini inceleyiniz.