p5.js TypedDict remove()用法及代码示例

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关键字部分查询此字典来访问这些值。一个类型化的字典可以存储可以使用字典方法访问的多个键-值对。

用法:

remove( key )

参数：此方法接受单个参数，如上所示和以下讨论：

key:这是一个字符串，表示必须在字典中检查的键。

以下示例说明了p5.js中的remove()方法：

例：

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： 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

相关用法

注：本文由纯净天空筛选整理自sayantanm19大神的英文原创作品 p5.js TypedDict remove() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。