An efficient way to compare strings in Golang

An efficient way to compare strings in Golang

One of the most overlooked operations is comparing two strings and this might not cause system overhead but definitely, it is a good practice to write an efficient code where possible. These small dividends definitely pay at the end when the application is under real stress in production. An efficient way to compare strings in Golang. Is there a better way to compare strings than using == in Golang ? Lets see

Introduction

One of the most overlooked operations is comparing two strings and this might not cause system overhead but definitely, it is a good practice to write an efficient code where possible. These small dividends definitely pay at the end when the application is under real stress in production.

Note: I am amateur in Go if you are an experienced professional in Go and find anything wrong here don’t be annoyed. If you could point the mistake I will correct those accordingly.

One of the often used string comparisons is:

strings.ToLower(stringA) == strings.ToLower(stringB)

but this way of comparing takes a lot of time per operation and the reason is, In Go, a string is an immutable sequence of runes. rune in Go is an integer value represents code point

The more detailed and sensible explanation is given by Rob Pike in blog:  https://blog.golang.org/strings Its a very nice bedtime read which gives a recap of basics of strings in programming languages.

Here ToLower a standard function in strings package which when used traverse through the entire string converts it to a lower case and returns a new string cause strings in Go is immutable which means strings.ToLower allocates new memory spaces for these two strings.

golang programming

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