Hash#value?()是一种Hash类方法,用于检查参数“ value”是否存在于数组中。
用法:Hash.value?()
参数:哈希值?
返回:true-如果在数组中存在参数“ value”,则返回false
范例1:
# 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
范例2:
# 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
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注:本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 Ruby | Hash value? method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。