Ruby 符号 === 函数

Symbol#===() : ===()是一个Symbol类方法，用于比较两个Symbol对象。

语法。符号.===()

参数：符号值

返回：true – 如果两个符号都相等，则返回false。

例子 #1 :

# Ruby code for Symbol.===() 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"
  
  
# === form 
puts "Symbol a === form : #{a === c}\n\n"
puts "Symbol b === form : #{b === b}\n\n"
puts "Symbol c === form : #{c === a}\n\n"

输出:

Symbol a : aBcDeF

Symbol b : äöü

Symbol c : ABCDEF



Symbol a === form : false

Symbol b === form : true

Symbol c === form : false

例子 #2 :

# Ruby code for Symbol.===() 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"
  
  
# === form 
puts "Symbol a === form : #{a === c}\n\n"
puts "Symbol b === form : #{b === b}\n\n"
puts "Symbol c === form : #{c === a}\n\n"

输出:

Symbol a : geeks

Symbol b : åöó

Symbol c : GEEKS



Symbol a === form : false

Symbol b === form : true

Symbol c === form : false