// Views

  /**
   * Returns a view of all mappings that have the given row key. For each row key / column key /
   * value mapping in the table with that row key, the returned map associates the column key with
   * the value. If no mappings in the table have the provided row key, an empty map is returned.
   *

What inspired **FastAPI**, how it compares to alternatives and what it learned from them.

## Intro

**FastAPI** wouldn't exist if not for the previous work of others.

There have been many tools created before that have helped inspire its creation.

I have been avoiding the creation of a new framework for several years. First I tried to solve all the features covered by **FastAPI** using many different frameworks, plug-ins, and tools.

And `threading.local` is not compatible with the new async features of modern Python.

!!! note "Technical Details"
    `threading.local` is used to have a "magic" variable that has a different value for each thread.

		"issue20529.go",  // go/types does not have constraints on stack size
		"issue22200.go",  // go/types does not have constraints on stack size
		"issue22200b.go", // go/types does not have constraints on stack size
		"issue25507.go",  // go/types does not have constraints on stack size
		"issue20780.go",  // go/types does not have constraints on stack size

            continue@eachQueue
          }

          // If we already have more than one task, that's enough work for now. Stop searching.
          readyTask != null -> {
            multipleReadyTasks = true
            break@eachQueue
          }

          // We have a task to execute when we complete the loop.
          else -> {
            readyTask = candidate
          }

				// nil checks have pointer type before scheduling, and
				// void type after scheduling.
				if f.scheduled {
					if v.Uses != 0 {
						f.Fatalf("nilcheck must have 0 uses %s", v.Uses)
					}
					if !v.Type.IsVoid() {
						f.Fatalf("nilcheck must have void type %s", v.Type.String())
					}
				} else {
					if !v.Type.IsPtrShaped() && !v.Type.IsUintptr() {

		// Two slice types are identical if they have identical element types.
		if y, ok := y.(*Slice); ok {
			return c.identical(x.elem, y.elem, p)
		}

	case *Struct:
		// Two struct types are identical if they have the same sequence of fields,
		// and if corresponding fields have the same names, and identical types,
		// and identical tags. Two embedded fields are considered to have the same

- Property 'map' is not valid: it cannot have a setter (ModelMap properties must be read only)"""
    }

    def "set cannot be writable"() {
        when: extract WritableSetProperty
        then: def ex = thrown InvalidManagedTypeException
        ex.message == """Type ${fullyQualifiedNameOf(WritableSetProperty)} is not a valid managed type:
- Property 'set' is not valid: it cannot have a setter (ModelSet properties must be read only)"""

## Another module with `APIRouter`

Let's say you also have the endpoints dedicated to handling "items" from your application in the module at `app/routers/items.py`.

You have *path operations* for:

* `/items/`
* `/items/{item_id}`

It's all the same structure as with `app/routers/users.py`.

          dot, "dot_general ops have different rhs parameters");
    if (dot.getDotDimensionNumbers() != first_dot.getDotDimensionNumbers())
      return rewriter.notifyMatchFailure(
          dot, "dot_general ops have different dimension numbers");
    if (dot.getPrecisionConfig() != first_dot.getPrecisionConfig())
      return rewriter.notifyMatchFailure(
          dot, "dot_general ops have different precision configs");