简单类型 / 字符类型
转换为字符串
从字符串获取
转换为数字及反向转换
转义字符
特殊字符
检查字符大小写
检查字符类型
ruble =
"
\u20BD
"
# ₽
lambda
=
"
\u03BB
"
# λ
puts
"ruble is
#{ruble}
"
puts
"
lambda
is
#{
lambda
}
"