package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`class(?=="(?:field|.*?\sfield|field\s.*?|.*?\sfield\s.*?)")`)
var str = `Ex1: should match both of these:
<div class="something else field">Foo</div>
<div class="field something else">Foo</div>
<span class="field">Bar</span>
<span class="foo field bar">Bar</span>
Ex2: should not match
<div class="baseball-field baz">Baz</div>
`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/