Here is a formula challenge for you.
![How many values are common in 2 lists [homework]](https://img.chandoo.org/hw/formula-size-of-common-values-in-2-lists.png "How many values are common in 2 lists [homework]")
Lets say we have 2 lists of values in A1:A10 & B1:B10
Now, how do you find the number of common values in both lists?
We just want the count, not list of common values it self.
Go ahead and figure out the formula and post your answers here.
Bonus challenges:
- Write the formula if 2 lists have non-numeric values (text for example) ?
- Write the formula if 2 lists are not of same size (A1:A10 and B1:B15 for example) ?
- Write the formula if we have 3 lists (all same size, numeric values) ?
Go ahead and share your answers. I am eager to see what you will come up with.
PS: For some inspiration, check out this forum discussion.
PPS: If you just want to highlight the common values, see this.
6 Responses to “Make VBA String Comparisons Case In-sensitive [Quick Tip]”
Another way to test if Target.Value equal a string constant without regard to letter casing is to use the StrCmp function...
If StrComp("yes", Target.Value, vbTextCompare) = 0 Then
' Do something
End If
That's a cool way to compare. i just converted my values to strings and used the above code to compare. worked nicely
Thanks!
In case that option just needs to be used for a single comparison, you could use
If InStr(1, "yes", Target.Value, vbTextCompare) Then
'do something
End If
as well.
Nice tip, thanks! I never even thought to think there might be an easier way.
Regarding Chronology of VB in general, the Option Compare pragma appears at the very beginning of VB, way before classes and objects arrive (with VB6 - around 2000).
Today StrComp() and InStr() function offers a more local way to compare, fully object, thus more consistent with object programming (even if VB is still interpreted).
My only question here is : "what if you want to binary compare locally with re-entering functions or concurrency (with events) ?". This will lead to a real nightmare and probably a big nasty mess to debug.
By the way, congrats for you Millions/month visits 🙂
This is nice article.
I used these examples to help my understanding. Even Instr is similar to Find but it can be case sensitive and also case insensitive.
Hope the examples below help.
Public Sub CaseSensitive2()
If InStr(1, "Look in this string", "look", vbBinaryCompare) = 0 Then
MsgBox "woops, no match"
Else
MsgBox "at least one match"
End If
End Sub
Public Sub CaseSensitive()
If InStr("Look in this string", "look") = 0 Then
MsgBox "woops, no match"
Else
MsgBox "at least one match"
End If
End Sub
Public Sub NotCaseSensitive()
'doing alot of case insensitive searching and whatnot, you can put Option Compare Text
If InStr(1, "Look in this string", "look", vbTextCompare) = 0 Then
MsgBox "woops, no match"
Else
MsgBox "at least one match"
End If
End Sub