Ruby Float nan?() 方法与示例

Float nan?()是一个浮点类方法，用于检查值是否“不是数字”。 “Not A Number”表示无效的 IEEE 浮点数。

Syntax: float.nan?()
Parameter: float value to be passed
Return: Return true – if the value is ‘not a number’ otherwise return false

示例 #1：

Ruby

# Ruby program for nan?() method
   
# Initializing value
a = 0.0
b = 0.0.modulo(4.0)
   
# Printing result
puts "a is not_a_number : #{a.nan?}\n\n"
puts "b is not_a_number : #{b.nan?}\n\n"

输出 ：

a is not_a_number : false

b is not_a_number : false

示例 #2：

红宝石

# Ruby program for nan?() method
   
# Initializing value
a = 26.00
b = 8.0
   
# Printing Result
puts "a is not_a_number : #{a.nan?}\n\n"
puts "b is not_a_number : #{b.nan?}\n\n"

输出 ：

a is not_a_number : false

b is not_a_number : false