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38 lines
489 B
38 lines
489 B
5 years ago
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package common
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import (
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"math/big"
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"unicode"
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)
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func IsNumeric(s string) bool {
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for _, r := range s {
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if !unicode.IsDigit(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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func IsLower(s string) bool {
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for _, r := range s {
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if !unicode.IsLower(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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func IsUpper(s string) bool {
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for _, r := range s {
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if !(r >= 'A' && r <= 'Z') {
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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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func IsPrime(i int) bool {
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return big.NewInt(int64(i)).ProbablyPrime(0)
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}
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