红宝石 |符号大写函数

Symbol#upcase() : upcase()是一个 Symbol 类方法，它返回符号对象的大写表示。

Syntax: Symbol.upcase()

Parameter: Symbol values

Return: the uppercase representation of the symbol object.

示例 #1：

# Ruby code for Symbol.upcase() method
  
# declaring Symbol 
a = :aBcDeF
  
# declaring Symbol
b = :"\u{e4 f6 fc}"
  
# declaring Symbol
c = :ABCDEF
  
# Symbol 
puts "Symbol a : #{a}\n\n"
puts "Symbol b : #{b}\n\n"
puts "Symbol c : #{c}\n\n\n\n"
  
  
# upcase form 
puts "Symbol a upcase form : #{a.upcase}\n\n"
puts "Symbol b upcase form : #{b.upcase}\n\n"
puts "Symbol c upcase form : #{c.upcase}\n\n"

输出 ：

Symbol a : aBcDeF

Symbol b : äöü

Symbol c : ABCDEF



Symbol a upcase form : ABCDEF

Symbol b upcase form : äöü

Symbol c upcase form : ABCDEF

示例 #2：

# Ruby code for Symbol.upcase() method
  
# declaring Symbol 
a = :geeks
  
# declaring Symbol
b = :"\u{e5 f6 f3}"
  
# declaring Symbol
c = :GEEKS
  
# Symbol 
puts "Symbol a : #{a}\n\n"
puts "Symbol b : #{b}\n\n"
puts "Symbol c : #{c}\n\n\n\n"
  
  
# upcase form 
puts "Symbol a upcase form : #{a.upcase}\n\n"
puts "Symbol b upcase form : #{b.upcase}\n\n"
puts "Symbol c upcase form : #{c.upcase}\n\n"

输出 ：

Symbol a : geeks

Symbol b : åöó

Symbol c : GEEKS



Symbol a upcase form : GEEKS

Symbol b upcase form : åöó

Symbol c upcase form : GEEKS