p5.js TypedDict remove()用法及代碼示例

p5.js中p5.TypedDict的remove()方法用於從類型化字典中刪除給定的鍵值對。鍵值對是一組相互映射的兩個值。可以通過使用該對的關鍵字部分查詢此字典來訪問這些值。一個類型化的字典可以存儲可以使用字典方法訪問的多個鍵-值對。

用法:

remove( key )

參數：此方法接受單個參數，如上所示和以下討論：

key:這是一個字符串，表示必須在字典中檢查的鍵。

以下示例說明了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); 
}

輸出：

在線編輯： https://editor.p5js.org/
環境設置： https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
參考： https://p5js.org/reference/#/p5.TypedDict/remove

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注：本文由純淨天空篩選整理自sayantanm19大神的英文原創作品 p5.js TypedDict remove() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。