p5.js createNumberDict() Function

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The createNumberDict() function is used to create a p5.NumberDict instance with the given data. The data can be individually passed a key-value pair or given as a collection of values using an object.

Syntax:

createNumberDict(key, value)

createNumberDict(object)

Parameters:

key: It specifies the number that is used as the key in the dictionary.
value: It specifies the number that is used as the value in the dictionary.
object: It specifies the object that is used as the dictionary.

Return Value: It returns a p5.NumberDict object with the given data.

The program below illustrate the createNumberDict() function in p5.js:

Example 1:

function setup() { 
  createCanvas(500, 200); 
  textSize(20); 
  
  // Creating a number dictionary 
  // with the given key and value pair 
  let mydict = createNumberDict("19", "1999"); 
  
  // Accessing the data using the data property 
  text('The dictionary has the following data under "19":', 20, 20); 
  text(mydict.data["19"], 20, 40); 
  
  // Checking if a key exists in the dictionary 
  text('The dictionary has the "25" key present:', 20, 80); 
  text(mydict.hasKey("19"), 20, 100); 
  
  text('The dictionary has the "100" key present:', 20, 140); 
  text(mydict.hasKey("100"), 20, 160); 
} 

Output:
ex1

Example 2:

function setup() { 
  createCanvas(600, 200); 
  textSize(20); 
  
  let squaresObject = { 
    2: 4, 
    3: 9, 
    4: 16, 
    5: 25 
  } 
  
  // Creating a number dictionary 
  // with the above object 
  let mydict = createNumberDict(squaresObject); 
  
  // Accessing the data using the data property 
  text('The dictionary has the following data under key "2":', 20, 20); 
  text(mydict.data["2"], 20, 40); 
  
  text('The dictionary has the following data under key "4":', 20, 80); 
  text(mydict.data["4"], 20, 100); 
  
  text('The dictionary has the following data under key "5":', 20, 140); 
  text(mydict.data["5"], 20, 160); 
} 

Output:
ex2

Online editor: https://editor.p5js.org/

Environment Setup: https://www.zambiatek.com/p5-js-soundfile-object-installation-and-methods/

Reference: https://p5js.org/reference/#/p5/createNumberDict

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