极客教程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"Ruby
输出:
Symbol a : aBcDeF
Symbol b : äöü
Symbol c : ABCDEF
Symbol a === form : false
Symbol b === form : true
Symbol c === form : false
Ruby
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"Ruby
输出:
Symbol a : geeks
Symbol b : åöó
Symbol c : GEEKS
Symbol a === form : false
Symbol b === form : true
Symbol c === form : false
Ruby