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https://github.com/hyperledger/fabric-samples.git
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2c43e03591
Created parser, contract and utils packages and extracted each piece of functionality into its own files. Removed "Get" prefix from methods and changed return values from interfaces to structs. Signed-off-by: Stanislav Jakuschevskij <stas@two-giants.com>
39 lines
709 B
Go
39 lines
709 B
Go
package utils
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import (
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"crypto/rand"
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"errors"
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"math/big"
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)
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func RandomElement(values []string) string {
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result := values[RandomInt(len(values))]
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return result
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}
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func RandomInt(max int) int {
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result, err := rand.Int(rand.Reader, big.NewInt(int64(max)))
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if err != nil {
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panic(err)
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}
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return int(result.Int64())
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}
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func DifferentElement(values []string, currentValue string) string {
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candidateValues := []string{}
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for _, v := range values {
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if v != currentValue {
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candidateValues = append(candidateValues, v)
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}
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}
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return RandomElement(candidateValues)
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}
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func AssertDefined[T any](value T, message string) T {
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if any(value) == any(nil) {
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panic(errors.New(message))
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}
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return value
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}
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