Count substrings with the Replace function

You can often use the Replace function in a smewhat unorthodox ways to simplify (and sometimes optimize) your code. For example, in order to count the number of occurrences of a substring inside another string you usually need a loop based on the InStr function:

Dim i As Long, count As Longi = InStr(source, search)Do While i    count = count + 1    i = InStr(i + 1, source, search)Loop

Here’s is a one-liner that does exactly the same. The trick is to replace each substring with another string that is one character longer, and then determine the difference between the obtained string and the original string. This number is equal to the number of substitutions done, and therefore equal to the number of substrings found. (Note that the code is more concise but a little slower than the previous approach).

count = Len(Replace(Source, Search, Search & "*")) - Len(Source)

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS