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ruby
13 December 2017

单引号中不转义

print("Hello\n")

print "Hello\n"

print "H", "e", "llo\n"


puts "Hello"        # 不会转义
puts "He", "llo"    # 自带两个换行
# encoding:utf-8
=begin
comment block

=end

if a>=10 then
    print "aaa"
else
    print "bbb"
end

while i <= 10
    print "ccc"
    i = i + 1
end

100.times do
    print "ddd"
end
irb --simple--prompt

数学

Math.sin(3.1415)

include Math

sqrt(10000)

变量嵌入字符串

puts "area = #{ value }"