Учебник языка Ruby

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1 Ruby 2

2.1 2.2

2.2.1 fxri:

2.2.2

2.3 2.4 2.5

2.5.1

3

3.1 3.2

3.2.1 3.2.2

3.3 3.4 3.5 3.6 3.7

4

4.1 4.2 4.3 4.4

4.4.1 4.4.2

4.5 4.6 4.7 4.8

5

5.1 5.2 5.3

5.4

5.4.1 5.4.2 / 5.4.3 5.4.4 5.4.5 / 5.4.6 ( ) 5.4.7 5.4.8 5.4.9 5.4.10 5.4.11 5.4.12 5.4.13 // 5.4.14 ,

5.5

5.5.1 ? 5.5.2 ?

5.6

5.6.1 5.6.2 5.6.3 // 5.6.4

5.7

5.7.1 ? 5.7.2 ?

5.8 5.9

5.9.1

5.9.1.1

5.9.2

5.9.2.1

6

6.1 ? 6.2

6.2.1 6.2.2 6.2.3 6.2.4 6.2.5

6.3

6.3.1 6.3.2 6.3.3 6.3.4 6.3.5 6.3.6 6.3.7 6.3.8 6.3.9 /

6.4

6.4.1 ? 6.4.2 ? 6.4.3 ?

6.5 6.6 6.7

7

7.1

7.1.1 ?

7.2

7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 - 7.2.6 ! 7.2.7 7.2.8

7.2.8.1 7.2.8.2 7.2.8.3 7.2.8.4 7.2.8.5 7.2.8.6

7.2.9 7.2.10 7.2.11 7.2.12

7.3

7.3.1 7.3.2

7.4

8

8.1

8.1.1 8.1.2 8.1.3 8.1.4 8.1.5 ""

8.2

8.2.1 8.2.2 8.2.3 8.2.4 8.2.5

8.3 ,

8.3.1 .size 8.3.2

8.4

8.4.1 //? 8.4.2 -

8.5 ? 8.6 ? 8.7 ? 8.8 ?

9

9.1 ? 9.2 2- ? 9.3 ?

9.3.1

9.4 9.5 ? 9.6 9.7

9.7.1

10

10.1 IO 10.2 10.3

10.4 10.5

11

11.1 ?

11.1.1 11.1.2

11.2 ?

11.2.1 11.2.2 ERB 11.2.3 ERB- 11.2.4 ERB- ERB-

11.3 , 11.4 ? 11.5 11.6 11.7 - 11.8 HTML-

11.8.1 11.8.2

11.9 You have got mail 11.10 -

11.10.1

12 13

13.1 13.2 13.3

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[1,2,3,4]

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:% irb(main):002:0> % => 70

14 * 5

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Integer (Fixnum Bignum), Float ( ). mathn, Rational ().

Rational 1, Integer (Fixnum Bignum).

Ruby , : (+), (-), (*), (/), (%), (**).6 6 6 6 6 6 + 4 - 4 * 4 / 4 % 4 ** 4 #-> #-> #-> #-> #-> #-> 10 2 24 1 2 1296

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6.0 + 4 6 - 4.0 6.0 * 4.0 6.0 / 4 6.0 % 4 6 ** 4.0

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ogHo_4ucJIo = ogHo_4ucJIo + gpyroe_4ucJIo

, + , .cTpoka = "" cTpoka += ", " cTpoka *= 3 cTpoka #-> ", , , " maccuB = [1,2,3] maccuB += [4,5] maccuB #-> [1,2,3,4,5]

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to_f to_i to_s to_a

Ruby to_. , (f Float , i Integer , s String , a Array ). :7.to_f 7.9.to_i 7.to_s 7.to_a #-> #-> #-> #-> 7.0 7 "7" [7]

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100). , rand 0.0 1.0 . :

( 100), ( 0...N, N ); , 0.0 1.0.

. srand. ( ). , . : , .srand 123 Array.new(5){ rand(100) }

#-> [69, 71, 28, 42, 22]

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