package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(\+?((\.\d+([eE]-\d+)?)|((0+(\.0*)?|\.0+)([eE]\+?\d+)?)|(0+\.\d*([eE]-\d+)?)|((1|1\.0*)([eE]-\d+)?)|(\d(\.\d*)?([eE]-[1-9]\d*)))\s+){3}(\+?((\.\d+([eE]-\d+)?)|((0+(\.0*)?|\.0+)([eE]\+?\d+)?)|(0+\.\d*([eE]-\d+)?)|((1|1\.0*)([eE]-\d+)?)|(\d(\.\d*)?([eE]-[1-9]\d*))))$(
# just a way to comment
# The ^$ anchors are there because xml always assumes them.
# They are required here for proper testing.
)*`)
var str = `0.0e10 .0e+10 .0 0e-10`
if len(re.FindStringIndex(str)) > 0 {
fmt.Println(re.FindString(str),"found at index",re.FindStringIndex(str)[0])
}
}
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/