Ruby 数组pack()函数
Array#pack() : pack()是一个Array类方法,根据aTemplateString中的指令,将arr的内容返回到一个二进制序列中。
语法。Array.pack()
参数。数组
返回:根据 aTemplateString 中的指令,将 arr 的内容转换成二进制序列。
例子 #1 :
# Ruby code for pack() method
# declaring array
a = [18, 22, 33, nil, 5, 6]
# declaring array
b = [1, 4, 1, 1, 88, 9]
# declaring array
c = [2, 3, 1, 8]
# pack method example
puts "pack() method form : #{a.pack("ccc")}\n\n"
puts "pack() method form : #{b.pack("efe")}\n\n"
输出:
pack() method form : !
pack() method form :
例子 #2 :
# Ruby code for pack() method
# declaring array
a = ["abc", "nil", "dog"]
# declaring array
b = ["cow", nil, "dog"]
# declaring array
c = ["maths"]
# pack method example
puts "pack() method form : #{a.pack("A3A3A3")}\n\n"
puts "pack() method form : #{b.pack("a3a3a3")}\n\n"
输出:
pack() method form : abcnildog
pack() method form : cowdog