&{3} &{4} &{7} &{8}
&{1} &{4} &{6} &{7}

# Learn

Here are the introductory sections and the tutorials to learn **FastAPI**.

## External Courses

Although the [Tutorial - User Guide](../tutorial/index.md){.internal-link target=_blank} and this **Advanced User Guide** are written as a guided tutorial (like a book) and should be enough for you to **learn FastAPI**, you might want to complement it with additional courses.

Or it might be the case that you just prefer to take other courses because they adapt better to your learning style.

}

func main() {
	mysort.F()

	sl1 := []*mysort.MyInt{{7}, {1}, {4}, {6}}
	mysort.Sort(sl1)
	fmt.Printf("%v %v %v %v\n", sl1[0], sl1[1], sl1[2], sl1[3])

	sl2 := []*MyString{{"when"}, {"in"}, {"the"}, {"course"}, {"of"}}
	mysort.Sort(sl2)
	fmt.Printf("%v %v %v %v %v\n", sl2[0], sl2[1], sl2[2], sl2[3], sl2[4])

// overuse of Clone can make programs use more memory.
// Clone should typically be used only rarely, and only when
// profiling indicates that it is needed.
// For strings of length zero the string "" will be returned
// and no allocation is made.
func Clone(s string) string {
	return stringslite.Clone(s)

// run

// 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.

// Test cases where a main dictionary is needed inside a generic function/method, because
// we are calling a method on a fully-instantiated type or a fully-instantiated function.
// (probably not common situations, of course)

package main

import (
	"fmt"
)

For details about who's involved and how Kubernetes plays a role,
read the CNCF [announcement].

----

## To start using K8s

See our documentation on [kubernetes.io].

Take a free course on [Scalable Microservices with Kubernetes].

To use Kubernetes code as a library in other applications, see the [list of published components](https://git.k8s.io/kubernetes/staging/README.md).

`webAppDirName` — `String`::
_Default value_: `src/main/webapp`
+
The name of the web application source directory, relative to the project directory.

`webAppDir` — (read-only) `File`::
_Default value_: `$webAppDirName`, e.g. _src/main/webapp_
+
The path to the web application source directory.

// best approach was for Go to raise the limit unconditionally for itself,
// and then leave old software to set the limit back as needed.
// Code that really wants Go to leave the limit alone can set the hard limit,
// which Go of course has no choice but to respect.
func init() {
	var lim Rlimit
	if err := Getrlimit(RLIMIT_NOFILE, &lim); err == nil && lim.Cur != lim.Max {
		origRlimitNofile.Store(&lim)
		nlim := lim
		nlim.Cur = nlim.Max

//		do = func(x ir.Node) bool {
//			return cond(x) || ir.DoChildren(x, do)
//		}
//		return do(n)
//	}
//
// Visit and Any are presented above as examples of how to use
// DoChildren effectively, but of course, usage that fits within the
// simplifications captured by Visit or Any will be best served
// by directly calling the ones provided by this package.
func DoChildren(n Node, do func(Node) bool) bool {
	if n == nil {