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37 lines
487 B
37 lines
487 B
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 IsDigit(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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