Hash#value?()是一種Hash類方法,用於檢查參數“ value”是否存在於數組中。
用法:Hash.value?()
參數:哈希值?
返回:true-如果在數組中存在參數“ value”,則返回false
範例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"
輸出:
Hash a value? form:true Hash b value? form:true Hash c value? form:false
範例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"
輸出:
Hash a value? form:true Hash b value? form:false Hash c value? form:true
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注:本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Ruby | Hash value? method。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。