## Deprecating parameters { #deprecating-parameters }

Now let's say you don't like this parameter anymore.

You have to leave it there a while because there are clients using it, but you want the docs to clearly show it as <dfn title="obsolete, recommended not to use it">deprecated</dfn>.

Then pass the parameter `deprecated=True` to `Query`:

{* ../../docs_src/query_params_str_validations/tutorial010_an_py310.py hl[19] *}

 *       (given by {@link #bits}). For example, {@link Hashing#sha1} produces a 160-bit number,
 *       while {@link Hashing#murmur3_32()} yields only 32 bits. Because a {@code long} value is
 *       clearly insufficient to hold all hash code values, this API represents a hash code as an
 *       instance of {@link HashCode}.
 *   <li><b>pure function:</b> the value produced must depend only on the input bytes, in the order

     and conditions of the license they choose before applying it.
     Licensors should also secure all rights necessary before
     applying our licenses so that the public can reuse the
     material as expected. Licensors should clearly mark any
     material not subject to the license. This includes other CC-
     licensed material, or material used under an exception or
     limitation to copyright. More considerations for licensors:

/// note | Technical Details

It used [`uvloop`](https://github.com/MagicStack/uvloop) instead of the default Python `asyncio` loop. That's what made it so fast.

It clearly inspired Uvicorn and Starlette, that are currently faster than Sanic in open benchmarks.

///

/// check | Inspired **FastAPI** to

Find a way to have a crazy performance.

                        // request digest
                        // Ignore a missing signature for SMB < 3.0, as
                        // - the specification does not clearly require that (it does for SMB3+)
                        // - there seem to be server implementations (known: EMC Isilon) that do not sign the final
                        // response

  with the `// tag::NAME` and `// end::NAME` directives, but note that
  these are intended for use in documentation, so please make it clear what
  you have done, and only do this where the benefit clearly outweighs the
  decrease in consistency.
* Note that Javadoc and block comments i.e. `/* ... */` are not formatted,
  but line comments i.e `// ...` are.

`Explain yourself!'

  `I can't explain MYSELF, I'm afraid, sir' said Alice, `because
I'm not myself, you see.'

  `I don't see,' said the Caterpillar.

  `I'm afraid I can't put it more clearly,' Alice replied very
politely, `for I can't understand it myself to begin with; and
being so many different sizes in a day is very confusing.'

  `It isn't,' said the Caterpillar.

- [kubectl] Improved the describe output for projected volume sources to clearly indicate whether Secret and ConfigMap entries are optional. ([#129457](https://github.com/kubernetes/kubernetes/pull/129457), [@gshaibi](https://github.com/gshaibi)) [SIG CLI]

`Explain yourself!'

  `I can't explain MYSELF, I'm afraid, sir' said Alice, `because
I'm not myself, you see.'

  `I don't see,' said the Caterpillar.

  `I'm afraid I can't put it more clearly,' Alice replied very
politely, `for I can't understand it myself to begin with; and
being so many different sizes in a day is very confusing.'

  `It isn't,' said the Caterpillar.

type Constraint ~int         // illegal: ~int is not in a type parameter list
</pre>

<!--
We should be able to simplify the rules for comparable or delegate some of them
elsewhere since we have a section that clearly defines how interfaces implement
other interfaces based on their type sets. But this should get us going for now.
-->

<p>
The <a href="#Predeclared_identifiers">predeclared</a>