Here is a quick macro tip that I stumbled on to while debugging some code yesterday (ya, ya, call me workaholic for coding on a weekend…)
You can select expressions in your code and place mouse pointer on that for a second to find what value it evaluates to (of course, this works only on break-point).
I think the above line has too much jargon, so watch this short animation to understand:

PS: You can add break points to your code by clicking on the left margin next to the line of code where you want a break point, like this:

When you add a break point to your code, excel will stop running the code at that point and brings you back to VB Editor so that you can find out if everything is going alright.
Share your favorite macro debugging techniques:
I use a variety of techniques when debugging macros. Most of the time I use break points, watches. Sometimes I use the msgbox to display the values I want to see while the code is running or print them to immediate window. What about you?
I am thinking of compiling all the debugging techniques people use in one post. So please share your tricks thru comments.














8 Responses to “What is LAMBDA? 4 Practical examples to REALLY understand it”
Thanks so much for this, it's utterly brilliant!
Silly question - I assume LAMDA will work with dynamic arrays?
Very much so. Many of the new functions like MAP only make sense in the context of dynamic arrays and Lambda functions.
As usual, very informative material. Easy to understand and apply!
Thanks for making everyone awesome!
Easy to understand Lambda function through this tutorial. Thanks Chandoo.
I have Officce 365 (updated), but I can't see LAMBDA function. 🙁
I dont see "Office Insider" option in my excel 365.
Another option for First Monday...
=LAMBDA(anydate,WORKDAY.INTL(EOMONTH(anydate,-1),1,"0111111"))
Loving the binary options in WORKDAY.INTL David...