version

Documentation

Index

• func GEQ(a, b string) bool

Functions

func GEQ

func GEQ(a, b string) bool

GEQ Compare the given two version strings and return true if a >= b The comparison is done by comparing all the numbers in the string.

Note:

1. This extracts all the numbers in the strings and compares them in order. For example comparing shivas/11.2.111-rc4 with shivas/11.3.36 is done by comparing [11, 2, 111, 4] with [11, 3, 36], first 11 is compared to 11, followed by comparing 2 to 3. It stops on the first diff in version numbers.
2. There might be certain drawbacks for this implementation. Using dates as version strings might not work. Ex 1.2.2022126 and 1.2.20221212. It will work if the dates and month are always written as two digits Ex: 1.2.20221212 and 1.2.20220606
3. The current implementation is transitive,(If A >= B and B >= C then, A >= C). The proof for this simple. Suppose we have a set of strings A = 11.2.111-rc-4 = [11, 2, 111, 4] B = 11.3.36 = [11, 3, 36] You can write A and B as a number in base 112 [Max of the numbers + 1] Now, a. GEQ will still give the same result b. As A and B are numbers transitive property holds
4. This was done to compare the versions of user agents that connect to UFS and works well for shivas and pRPC clients. Shivas uses `shivas/x.x.x` format and prpc uses `pRPC client x.x` format. This seems to work well for both of them. If you plan to use it elsewhere, be sure to check the versioning format and decide for yourself
5. We briefly considered recognizing the different formats and implementing different comparison for each of them. We decided against it as it would be too complicated to maintain and wouldn't be flexible enough for our use case.