p5.js TypedDict size()用法及代码示例

let tmp = 1; 
  
function setup() { 
  createCanvas(550, 500); 
  textSize(16); 
  
  text("Click the button to add a new entry " + 
       "or check the size of the dictionary", 
       20, 20); 
  
  addBtn = createButton("Add a new entry"); 
  addBtn.position(30, 40); 
  addBtn.mouseClicked(addEntry); 
  
  checkBtn = 
    createButton("Check size of dictionary"); 
  checkBtn.position(30, 80); 
  checkBtn.mouseClicked(checkSize); 
  
  // Create a string dictionary with one entry 
  numDict = createStringDict('k0', 'v0'); 
} 
  
function addEntry() { 
  
  // Add a new entry to the dictionary 
  numDict.create("k" + tmp, "v" + tmp); 
  
  text("New Entry added to the dictionary", 
       20, 120 + tmp * 20); 
    
  tmp++; 
} 
  
function checkSize() { 
  
  // Get the current size of the dictionary 
  let currSize = numDict.size(); 
  
  // Display the current size 
  text("The current size of the dictionary is:" + 
       currSize, 20, 120 + tmp * 20); 
  
  tmp++; 
}