55 lines
997 B
Go
55 lines
997 B
Go
package txt
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import (
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"regexp"
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"unicode"
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)
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var ContainsNumberRegexp = regexp.MustCompile("\\d+")
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// ContainsNumber returns true if string contains a number.
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func ContainsNumber(s string) bool {
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return ContainsNumberRegexp.MatchString(s)
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}
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// ContainsLetters reports whether the string only contains letters.
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func ContainsLetters(s string) bool {
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if s == "" {
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return false
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}
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for _, r := range s {
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if !unicode.IsLetter(r) {
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return false
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}
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}
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return true
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}
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// ContainsASCIILetters reports if the string only contains ascii chars without whitespace, numbers, and punctuation marks.
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func ContainsASCIILetters(s string) bool {
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for _, r := range s {
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if (r < 65 || r > 90) && (r < 97 || r > 122) {
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return false
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}
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}
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return true
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}
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// ContainsSymbols reports whether the string only contains symbolic characters.
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func ContainsSymbols(s string) bool {
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if s == "" {
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return false
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}
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for _, r := range s {
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if !unicode.IsSymbol(r) {
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return false
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}
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}
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return true
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}
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