return false;
    }

    Alphabet upperCase() {
      if (!hasLowerCase()) {
        return this;
      }
      checkState(!hasUpperCase(), "Cannot call upperCase() on a mixed-case alphabet");
      char[] upperCased = new char[chars.length];
      for (int i = 0; i < chars.length; i++) {
        upperCased[i] = Ascii.toUpperCase(chars[i]);
      }
      Alphabet upperCase = new Alphabet(name + ".upperCase()", upperCased);

  }

  private fun uppercase(original: RequestBody?): RequestBody =
    object : RequestBody() {
      override fun contentType(): MediaType? = original!!.contentType()

      override fun contentLength(): Long = original!!.contentLength()

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)

        assertTrue(CharUtil.isUrlChar('a')); // first lowercase
        assertTrue(CharUtil.isUrlChar('z')); // last lowercase
        assertTrue(CharUtil.isUrlChar('A')); // first uppercase
        assertTrue(CharUtil.isUrlChar('Z')); // last uppercase
        assertTrue(CharUtil.isUrlChar('0')); // first digit
        assertTrue(CharUtil.isUrlChar('9')); // last digit

        // Test characters just outside ranges that are not valid

				<c:if
					test="${fieldData.name == 'label' && fieldData.valueCountMap.size() > 0}">
					<ul class="list-group mb-2">
						<li class="list-group-item text-uppercase"><la:message
								key="labels.facet_label_title" /></li>
						<c:forEach var="countEntry" items="${fieldData.valueCountMap}">
							<c:if
								test="${countEntry.value != 0 && fe:labelexists(countEntry.key)}">

```

or

```
http://127.0.0.1:8000/items/foo?short=on
```

or

```
http://127.0.0.1:8000/items/foo?short=yes
```

or any other case variation (uppercase, first letter in uppercase, etc), your function will see the parameter `short` with a `bool` value of `True`. Otherwise as `False`.


## Multiple path and query parameters { #multiple-path-and-query-parameters }

     */
    private CharUtil() {
    }

    /**
     * Checks if the given character is a valid URL character.
     *
     * Valid URL characters include:
     * - Lowercase letters (a-z)
     * - Uppercase letters (A-Z)
     * - Digits (0-9)
     * - Special characters: . - * _ : / + % = & ? # [ ] @ ~ ! $ ' ( ) , ;
     *
     * @param c the character to check

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

Но затем нужно вызвать «тот метод, который делает первую букву заглавной».

Это был `upper`? Или `uppercase`? `first_uppercase`? `capitalize`?

Тогда вы пробуете старого друга программиста — автозавершение редактора кода.

            return text.substring(prefix.length());
        }
        return text;
    }

    /**
     * Decapitalizes a string according to JavaBeans conventions.
     * Note: If the first two characters are uppercase, the string will not be decapitalized.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * StringUtil.decapitalize("UserId")  = "userId"
     * StringUtil.decapitalize("ABC")     = "ABC"

Irgendwann sind die Funktions-Parameter fertig, Sie starten mit der Definition des Körpers ...

Aber dann müssen Sie „diese Methode aufrufen, die den ersten Buchstaben in Großbuchstaben umwandelt“.

War es `upper`? War es `uppercase`? `first_uppercase`? `capitalize`?

Dann versuchen Sie es mit dem langjährigen Freund des Programmierers, der Editor-Autovervollständigung.

At some point you would have started the definition of the function, you had the parameters ready...

But then you have to call "that method that converts the first letter to upper case".

Was it `upper`? Was it `uppercase`? `first_uppercase`? `capitalize`?

Then, you try with the old programmer's friend, editor autocompletion.