英文版:http://ruby.learncodethehardway.org/book/
(繁体+英文-》简体)
现在添加一批练习,在练习过程中写代码,并让你的代码运行起来。这里不会有很多详细的解释,因为大部分都是以前的内容。这次练习的目的是为了巩固你学到的东西,后面再添加息内容——不要跳过,不要复制粘贴。
puts "Mary had a little lamb." puts "Its fleece was white as #{'snow'}." puts "And everywhere that Mary went." puts "." * 10 # what'd that do? end1 = "C" end2 = "h" end3 = "e" end4 = "e" end5 = "s" end6 = "e" end7 = "B" end8 = "u" end9 = "r" end10 = "g" end11 = "e" end12 = "r" # watch that print vs. puts on this line what's it do? print end1 + end2 + end3 + end4 + end5 + end6 puts end7 + end8 + end9 + end10 + end11 + end12
输出结果:
$ ruby ex7.rb
Mary had a little lamb.
Its fleece was white as snow.
And everywhere that Mary went.
..........
CheeseBurger
课后习题:
后面几节的思考题都是一样的
1、回去阅读你的代码并且在每一行添加注释
2、倒着阅读你的代码,找出你的错误
3、从现在开始,记录你犯的每一个错误,并且说明原因及解决方案
4、当你准备下一次练习的时候,回顾一下你的错误集锦,并且吸取教训,尽量在下一次练习中不要犯相同的错误。
5、记住:是人都会犯错!程序员们就像魔术师一样,让人们觉得他们的表演很完美,但是那一切都是表象,并且他们也时不时会犯些错误。