p5.js TypedDict remove() 方法

p5.js 中 p5.TypedDict 的remove() 方法用于从类型化字典中删除给定的键值对。键值对是一组相互映射的两个值。可以通过使用该对的键部分查询此字典来访问这些值。类型化字典可以存储多个键值对，可以使用字典的方法访问这些键值对。

句法：

remove( key )

参数：此方法接受一个参数，如上所示并在下面讨论：

• key：这是一个字符串，表示必须在字典中检查的键。

下面的示例说明了 p5.js 中的remove() 方法：

例子：

Javascript

function setup() {
  createCanvas(550, 400);
  textSize(16);
  
  let tmpObj = {
    "Statue of Unity": "182 m",
    "Spring Temple Buddha": "128 m",
    "Ushiku Daibutsu": "100 m",
    "Great Buddha of Thailand": "92m"
  };
  
  // Create a new string dictionary
  let stringDict =
      createStringDict(tmpObj);
  text("New string dictionary created", 20, 20);
  
  // Checking the size of the dictionary
  let currSize = stringDict.size();
  text("The current size of the " +
       "dictionary is: " + currSize, 20, 40);
  
  let existOne =
      stringDict.hasKey("Statue of Unity");
  text("Dictionary has key " +
       "'Statue of Unity': " +
       existOne, 20, 80);
  
  let existTwo =
      stringDict.hasKey("Spring Temple Buddha");
  text("Dictionary has key " +
       "'Spring Temple Buddha': " +
       existTwo, 20, 100);
  
  // Removing one key
  stringDict.remove("Spring Temple Buddha");
  text("One key removed from the dictionary",
       20, 140);
  
  // Checking the size of the dictionary again
  currSize = stringDict.size();
  text("The current size of the dictionary is: " +
       currSize, 20, 160);
  
  // Checking for the removed key
  existTwo =
    stringDict.hasKey("Spring Temple Buddha");
  text("Dictionary has key " +
       "'Spring Temple Buddha': " +
       existTwo, 20, 200);
  
  // Checking the other keys
  let existThree = 
      stringDict.hasKey("Ushiku Daibutsu");
  text("Dictionary has key " +
       "'Ushiku Daibutsu': " +
       existThree, 20, 220);
}

输出：

在线编辑器： https://editor.p5js.org/
环境设置： https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
参考： https://p5js.org/reference/#/p5.TypedDict/remove