34 lines
474 B
Go
34 lines
474 B
Go
package txt
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import (
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"strings"
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)
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// Numeric removes non-numeric characters from a string and returns the result.
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func Numeric(s string) string {
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if s == "" {
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return ""
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}
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sep := '.'
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if c := strings.Count(s, "."); c == 0 || c > 1 {
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sep = ','
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}
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// Remove invalid characters.
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s = strings.Map(func(r rune) rune {
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if r == sep {
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return '.'
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} else if r == '-' {
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return '-'
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} else if r < '0' || r > '9' {
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return -1
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}
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return r
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}, s)
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return s
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}
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