Dynamic string validation using go's text/template package

Imagine you could validate the following string: id: “d416e1b0-97b2-4a49-8ad5-2e6b2b46eae0” static-string: “abc” invalid-string: def random-number: 150 Using go template syntax like this: id: “{ {isUUID} }” static-string: “abc” invalid-string: def random-number: { {inRange 100 200} } Well, that would be cool wouldn’t it? Unfortunately this isn’t supported by go’s text/template package. I’ve built a library which uses a subset of the template syntax to cover this specific use-case: github.com/sleeyax/templatex-go .