`That WAS a narrow escape!' said Alice, a good deal frightened at
the sudden change, but very glad to find herself still in
existence; `and now for the garden!' and she ran with all speed
back to the little door:  but, alas! the little door was shut
again, and the little golden key was lying on the glass table as
before, `and things are worse than ever,' thought the poor child,
`for I never was so small as this before, never!  And I declare

<img src="/img/tutorial/security/image01.png">

!!! check "Authorize button!"
    You already have a shiny new "Authorize" button.

    And your *path operation* has a little lock in the top-right corner that you can click.

And if you click it, you have a little authorization form to type a `username` and `password` (and other optional fields):

<img src="/img/tutorial/security/image02.png">

!!! note

  is the DefaultExpressionEvaluator, which is a local variable within the
  implementation of the BasicComponentConfigurator. This ExpressionEvaluator
  simply returns the expression itself as the resolved value, which adds
  very little value to the container. Things like ${project.build.resources}
  are not resolved, and result in a type mismatch for the member injection.

  We need a replacement for DefaultExpressionEvaluator that is capable of

If you are paying for 3 servers but you are using only a little bit of their RAM and CPU, you are probably **wasting money** 💸, and probably **wasting server electric power** 🌎, etc.

            // if the class is defined as a type alias. We can detect that situation when the constructed type
            // is different from the return type of the constructor.
            //
            // TODO: This seems a little indirect. Is there a better way to do this? For FE1.0 there is
            // a special `TypeAliasConstructorDescriptor` for this case. For FIR there is

a de-facto standard.  To achieve this, non-free programs must be
allowed to use the library.  A more frequent case is that a free
library does the same job as widely used non-free libraries.  In this
case, there is little to gain by limiting the free library to free
software only, so we use the Lesser General Public License.

  In other cases, permission to use a particular library in non-free

This is just a **quick tutorial / refresher** about Python type hints. It covers only the minimum necessary to use them with **FastAPI**... which is actually very little.

**FastAPI** is all based on these type hints, they give it many advantages and benefits.

But even if you never use **FastAPI**, you would benefit from learning a bit about them.

!!! note

# /---------------------------------------------------------------------------
# littleAdjustmentMap: (NotRequired - Default map:{})
#
# The various settings about a little adjustment.
#
# o isAvailableAddingSchemaToTableSqlName: (NotRequired - Default false)
# o isAvailableAddingCatalogToTableSqlName: (NotRequired - Default false)
# o isAvailableDatabaseDependency: (NotRequired - Default false)
# o isAvailableDatabaseNativeJDBC: (NotRequired - Default false)

pkg syscall (linux-386), const PR_CAPBSET_DROP = 24
pkg syscall (linux-386), const PR_CAPBSET_READ = 23
pkg syscall (linux-386), const PR_ENDIAN_BIG = 0
pkg syscall (linux-386), const PR_ENDIAN_LITTLE = 1
pkg syscall (linux-386), const PR_ENDIAN_PPC_LITTLE = 2
pkg syscall (linux-386), const PR_FPEMU_NOPRINT = 1
pkg syscall (linux-386), const PR_FPEMU_SIGFPE = 2
pkg syscall (linux-386), const PR_FP_EXC_ASYNC = 2

It doesn't use a data validation, serialization and documentation third-party library like Pydantic, it has its own. So, these data type definitions would not be reusable as easily.

It requires a little bit more verbose configurations. And as it is based on WSGI (instead of ASGI), it is not designed to take advantage of the high performance provided by tools like Uvicorn, Starlette and Sanic.