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Default value if null

Function: Default value if null​

This function helps you manage data in your application by ensuring that a variable always has a value. If a specific piece of data (your "Value") is empty or not set, this function automatically assigns a "Default value" to it. Otherwise, it keeps the original "Value." The result is then stored in a variable you name.

Input,

  • Value: This is the data you want to check. If this data is empty, missing, or not set, the function will use your "Default value" instead.
  • Default value: This is the data that will be used if your "Value" is found to be empty or not set.

Output,

  • Variable name: This is the name you provide for a new or existing variable in your application. The function will store the chosen value (either your original 'Value' or the 'Default value') into this variable. This variable will then hold the final, non-null value, ready for use in subsequent steps of your application.

Execution Flow,

Real-Life Examples,

Here are some examples of how you can use the "Default value if null" function:

Example 1: Setting a default customer name

  • Scenario: You're collecting customer information, but sometimes the customer's name isn't provided. You want to ensure there's always a placeholder like "Guest User."
  • Inputs:
    • Value: Customer Name from Form (e.g., "John Doe" or empty)
    • Default value: "Guest User"
    • Variable name: Final Customer Name
  • Result:
    • If Customer Name from Form was "John Doe", the variable Final Customer Name will be "John Doe".
    • If Customer Name from Form was empty, the variable Final Customer Name will be "Guest User".

Example 2: Ensuring a product quantity is never zero

  • Scenario: A user is adding items to a cart, and the quantity field might accidentally be left blank. You want the quantity to default to 1 if not specified.
  • Inputs:
    • Value: Quantity from User Input (e.g., 5 or empty)
    • Default value: 1
    • Variable name: Product Quantity
  • Result:
    • If Quantity from User Input was 5, the variable Product Quantity will be 5.
    • If Quantity from User Input was empty, the variable Product Quantity will be 1.

Example 3: Providing a fallback image URL

  • Scenario: You're displaying product images, but some products might not have a specific image URL. You want to show a generic "no image available" picture in those cases.
  • Inputs:
    • Value: Product Image URL (e.g., "https://example.com/product1.jpg" or empty)
    • Default value: "https://example.com/no-image.png"
    • Variable name: Display Image URL
  • Result:
    • If Product Image URL was "https://example.com/product1.jpg", the variable Display Image URL will be "https://example.com/product1.jpg".
    • If Product Image URL was empty, the variable Display Image URL will be "https://example.com/no-image.png".