Question

我的目标是让用户输入屏幕分辨率并将其存储在screen_size中。我做到了，但是有一个错误。

class Screen
  attr_accessor :screen_size, :info

  def initialize(screen_size, info)
    @screen_size = screen_size
    @info = info
  end
end

my_info = Screen.new("What is you're resolution?")
my_screen = Screen.new(gets.chomp)
# >> in `initialize': wrong number of arguments (given 1, expected 2) (ArgumentError)

我该如何解决？

Answer 1

您将错误的参数传递给Screen.new。您的initialize方法需要两个参数，而您只传递了一个。

尝试一下：

screen = Screen.new(gets.chomp, "What is you're resolution?")

Answer 2

import React, { Component } from 'react'; import Video fom 'react-native-video'; export default class VideoTest extends React.Component { render() { return ( <View> <Video source={{ uri: "https://s3.amazonaws.com/yojma/hls/movie/TDGVYNnBhbQMusqagzXlUZmKxcJPEoSdvIpwLAef/main.m3u8"}} /> </View> ) }}返回一个值（这是您在按Enter键之前输入的值）。该方法需要两个。如果输入的是“ 1024 768”之类的内容，则可以按空格分隔输入内容。像这样：

gets.chomp

参数数量错误（给定1，预期为2）（ArgumentError）

2 个答案: