Just use any kind of model, any kind of class, any kind of database that you need for your application. **FastAPI** has you covered with the dependency injection system.

## Code size { #code-size }

This example might seem verbose. Keep in mind that we are mixing security, data models, utility functions and *path operations* in the same file.

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package p2

type Twoer interface {
	// Deprecated: No good.
	PackageTwoMeth()
}

// Deprecated: No good.
func F() string {}

func G() Twoer {}

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package p3

type ThirdBase struct{}

func (tb *ThirdBase) GoodPlayer() (i, j, k int)

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package lex

import (
	"go/build/constraint"
	"io"
	"os"
	"strings"
	"text/scanner"
	"unicode"

	"cmd/asm/internal/flags"
	"cmd/internal/objabi"
	"cmd/internal/src"
)

// A Tokenizer is a simple wrapping of text/scanner.Scanner, configured

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link ImmutableGraph} and {@link ImmutableGraph.Builder} that are not ready covered by
 * {@link StandardImmutableDirectedGraphTest}.
 */
@RunWith(JUnit4.class)
@NullUnmarked
public class StandardImmutableGraphAdditionalTest {

  @Test
  public void immutableGraph() {

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

"use strict";

if (process.argv.length < 3) {
	console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
	process.exit(1);
}

globalThis.require = require;
globalThis.fs = require("fs");
globalThis.path = require("path");
globalThis.TextEncoder = require("util").TextEncoder;

// Copyright 2024 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build js && wasm

package bytes_test

import (
	"bytes"
	"testing"
)

func TestIssue65571(t *testing.T) {
	b := make([]byte, 1<<31+1)
	b[1<<31] = 1
	i := bytes.IndexByte(b, 1)
	if i != 1<<31 {
		t.Errorf("IndexByte(b, 1) = %d; want %d", i, 1<<31)
	}

#!/bin/rc -e
# Copyright 2012 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

rfork n

if(! test -f make.rc){
	echo 'all.rc must be run from $GOROOT/src' >[1=2]
	exit wrongdir
}

. ./make.rc --no-banner $*
bind -b $GOROOT/bin /bin
./run.rc --no-rebuild

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "../../../../../runtime/textflag.h"
// TODO: cover more instruction

TEXT foo(SB),DUPOK|NOSPLIT,$0
	JAL	1(PC)	//CALL 1(PC)	//00040054
	JAL	(R4)	//CALL (R4)	//8100004c
	// relocation in play so the assembled offset should be 0

```console
$ bash scripts/test-cov-html.sh
```

</div>

This command generates a directory `./htmlcov/`, if you open the file `./htmlcov/index.html` in your browser, you can explore interactively the regions of code that are covered by the tests, and notice if there is any region missing.

## Docs

First, make sure you set up your environment as described above, that will install all the requirements.

### Docs live