红宝石 |哈希值？方法

Hash#value?()是一个 Hash 类方法，它检查参数的“值”是否存在于数组中。

Syntax: Hash.value?()
Parameter: Hash value?
Return: true – if argumented ‘value’ is present in the array otherwise return false

示例 #1：

Ruby

# Ruby code for Hash.value?() method
 
# declaring Hash value
a = {a:100, b:200}
 
# declaring Hash value
b = {a:100, c:300, b:200}
 
# declaring Hash value
c = {a:100}
 
 
# value? Value
puts "Hash a value? form : #{a.value?(200)}\n\n"
 
puts "Hash b value? form : #{b.value?(100)}\n\n"
 
puts "Hash c value? form : #{c.value?(300)}\n\n"

输出 ：

Hash a value? form : true

Hash b value? form : true

Hash c value? form : false

示例 #2：

红宝石

# Ruby code for Hash.value?() method
 
# declaring Hash value
a = { "a" => 100, "b" => 200 }
 
# declaring Hash value
b = {"a" => 100}
 
# declaring Hash value
c = {"a" => 100, "c" => 300, "b" => 200}
 
 
# value? Value
puts "Hash a value? form : #{a.value?(200)}\n\n"
 
puts "Hash b value? form : #{b.value?(200)}\n\n"
 
puts "Hash c value? form : #{c.value?(300)}\n\n"

输出 ：

Hash a value? form : true

Hash b value? form : false

Hash c value? form : true