upperCased[i] = Ascii.toUpperCase(chars[i]);
      }
      Alphabet upperCase = new Alphabet(name + ".upperCase()", upperCased);
      return ignoreCase ? upperCase.ignoreCase() : upperCase;
    }

    Alphabet lowerCase() {
      if (!hasUpperCase()) {
        return this;
      }
      checkState(!hasLowerCase(), "Cannot call lowerCase() on a mixed-case alphabet");
      char[] lowerCased = new char[chars.length];

  /**
   * Returns a copy of the input string in which all {@linkplain #isUpperCase(char) uppercase ASCII
   * characters} have been converted to lowercase. All other characters are copied without
   * modification.
   */
  public static String toLowerCase(String string) {
    int length = string.length();
    for (int i = 0; i < length; i++) {
      if (isUpperCase(string.charAt(i))) {
        char[] chars = string.toCharArray();

        original!!.writeTo(bufferedSink)
        bufferedSink.emit()
      }
    }
  }

  private fun uppercase(original: BufferedSink): Sink {
    return object : ForwardingSink(original) {
      override fun write(
        source: Buffer,
        byteCount: Long,
      ) {
        original.writeUtf8(source.readUtf8(byteCount).uppercase())
      }
    }
  }

  /**
   * Returns a copy of the input string in which all {@linkplain #isUpperCase(char) uppercase ASCII
   * characters} have been converted to lowercase. All other characters are copied without
   * modification.
   */
  public static String toLowerCase(String string) {
    int length = string.length();
    for (int i = 0; i < length; i++) {
      if (isUpperCase(string.charAt(i))) {
        char[] chars = string.toCharArray();

  private static void testEncodingWithCasing(
      BaseEncoding encoding, String decoded, String encoded) {
    testEncodingWithSeparators(encoding, decoded, encoded);
    testEncodingWithSeparators(encoding.upperCase(), decoded, Ascii.toUpperCase(encoded));
    testEncodingWithSeparators(encoding.lowerCase(), decoded, Ascii.toLowerCase(encoded));
  }

  private static void testEncodingWithSeparators(

  private static void testEncodingWithCasing(
      BaseEncoding encoding, String decoded, String encoded) {
    testEncodingWithSeparators(encoding, decoded, encoded);
    testEncodingWithSeparators(encoding.upperCase(), decoded, Ascii.toUpperCase(encoded));
    testEncodingWithSeparators(encoding.lowerCase(), decoded, Ascii.toLowerCase(encoded));
  }

  private static void testEncodingWithSeparators(

		return nullif(argVals[0], argVals[1])

	case sqlFnCharLength, sqlFnCharacterLength:
		return charlen(argVals[0])

	case sqlFnLower:
		return lowerCase(argVals[0])

	case sqlFnUpper:
		return upperCase(argVals[0])

	case sqlFnUTCNow:
		return handleUTCNow()

	case sqlFnToString, sqlFnToTimestamp:
		// TODO: implement
		fallthrough

	default:
		return nil, errNotImplemented
	}
}

В какой-то момент вы бы начали определение функции, у вас были бы готовы параметры...

Но затем вы должны вызвать «тот метод, который преобразует первую букву в верхний регистр».

Было это `upper`? Или `uppercase`? `first_uppercase`? `capitalize`?

Тогда вы попробуете с давним другом программиста: автодополнением редактора.

                duration.entries
                    .filter { (key, _) -> key != "testProject" }
                    .map { (osString, timeInMs) ->
                        val os = Os.valueOf(osString.uppercase(Locale.US))
                        val performanceTestDuration = PerformanceTestDuration(scenario, timeInMs as Int)
                        os to (testProject to performanceTestDuration)
                    }
            }

À un certain point vous auriez commencé la définition de la fonction, vous aviez les paramètres prêts.

Mais vous aviez besoin de "cette méthode qui convertit la première lettre en majuscule".

Était-ce `upper` ? `uppercase` ? `first_uppercase` ? `capitalize` ?

Vous essayez donc d'utiliser le vieil ami du programmeur, l'auto-complétion de l'éditeur.