VBA - how to conditionally skip a for loop iteration

💡 VBA: Conditionally Skipping a For Loop Iteration

So, you're writing some VBA code, looping through an array, and you want to skip certain iterations based on a condition. But you also want to keep track of the last value of the iterator variable. 🔄

You've tried using Continue and Next, but unfortunately, they don't work like you expected. 😕

No worries, I've got some easy solutions for you! Let's tackle this problem step by step. 👣

Understanding the Issue 🧐

In VBA, we don't have a built-in Continue statement like some other programming languages. Instead, we need to find alternative methods to achieve the desired behavior. 🔄

In the given code snippet, the line PrevCouponIndex = i suggests that the variable PrevCouponIndex needs to store the last value of i before skipping the iteration. You also want to exit the loop gracefully if the condition is met.

Solution 1: Using GoTo Label 🏷

One way to achieve this behavior is by using a label and the GoTo statement. 😮

Here's an updated code snippet:

For i = LBound(Schedule, 1) To UBound(Schedule, 1)
    If (Schedule(i, 1) < ReferenceDate) Then
        PrevCouponIndex = i
        GoTo SkipIteration
    End If
    DF = Application.Run("SomeFunction"....)
    PV = PV + (DF * Coupon / CouponFrequency)
SkipIteration:
Next

In this approach, we introduce a label SkipIteration right above the Next statement. When the condition is met, the code jumps to the label, skipping the rest of the loop and continuing with the next iteration. Meanwhile, the value of i is held by PrevCouponIndex. 🎶

Solution 2: Using Another Loop 🔄

Another approach involves utilizing an additional loop in combination with an Exit For statement. 😮

Here's an alternative code snippet:

For i = LBound(Schedule, 1) To UBound(Schedule, 1)
    If (Schedule(i, 1) < ReferenceDate) Then
        PrevCouponIndex = i
        Exit For
    Else
        DF = Application.Run("SomeFunction"....)
        PV = PV + (DF * Coupon / CouponFrequency)
    End If
Next i

In this solution, we exit the loop prematurely using Exit For when the condition is met, effectively skipping the remaining iterations. By checking the condition again within the loop, we ensure that the desired code inside the loop is executed for other cases. 🔄

Conclusion and Your Turn 🤓🖊

And there you have it! Two simple yet effective solutions to conditionally skip a for loop iteration in VBA. Now you can choose the approach that suits your needs. 🎉

But wait, before you go, I'd love to hear from you! Have you encountered this problem before, or do you have any other VBA questions? Feel free to share your thoughts, experiences, or further questions in the comments below. Let's geek out together! 🤓💬