lachlan-eagling

import cProfile
from random import choice


def profiler(func):
    def wrapper(*args, **kwargs):
        with cProfile.Profile() as pr:
            result = func(*args, **kwargs)
        pr.print_stats()
        return result

lachlan-eagling

import cProfile

def fib(n):
    if n < 2:
        return n
    return fib(n - 1) + fib(n - 2)

cProfile.run("fib(35)")

lachlan-eagling

def fib(n):
    if n < 2:
        return n
    return fib(n - 1) + fib(n - 2)

fib(35)

lachlan-eagling

package main

import (
	"fmt"
	"unsafe"
)

type OptimisedPost struct {
	title     string // 16 Bytes
	content   string // 16 Bytes

lachlan-eagling

package main

import (
	"fmt"
	"unsafe"
)

type Post struct {
	published bool // 1 byte
	title     string // 16 Bytes

lachlan-eagling

package main

import (
	"fmt"
	"unsafe"
)

type MemoryExample struct {
	a int // 8 byte
	b int16 // 2 bytes

lachlan-eagling

func main() {
	var users []User

	userJson := []byte(`[{"firstName": "Lachlan", "surname": "Eagling", "username": "Lachlan_E", "age": 28}, {"firstName": "Jon", "surname": "Snow", "username": "Watcher21", "age": 20}]`)
	if err := json.Unmarshal(userJson, &users); err != nil {
		fmt.Println(err)
	}
	
	fmt.Println(users)
}

lachlan-eagling

package main

import (
	"encoding/json"
	"fmt"
)

type User struct {
	FirstName string `json:"firstName"`
	LastName  string `json:"surname"`

lachlan-eagling

func main() {
	user := User{
		firstName: "Lachlan",
		lastName:  "Eagling",
		username:  "LachlanEagling",
		age:       7,
	}
	if err := user.UpdateUsername("Lachlan_E"); err != nil {
		fmt.Println(err)
}

lachlan-eagling

// UpdateUsername updates username if valid, else returns an error.
func (u *User) UpdateUsername(newUsername string) error {
	if err := validateUsername(newUsername); err != nil {
		return err
	}
	u.username = newUsername
	return nil
}