C-Pro

create table t1(x int);
create table t2 (x int, y varchar);
create table audit_trail(
    id bigserial primary key,
    table_name varchar,
    data_before jsonb,
    data_after jsonb,
    ts timestamp
);

C-Pro

package main_test

import "testing"

func BenchmarkBoolMap(b *testing.B) {
	m := map[int]bool{}
	for i := 0; i < b.N; i++ {
		m[i] = true
	}
}

C-Pro

// https://go.dev/play/p/gTzl_yht11I

package main

import (
	"database/sql/driver"
	"fmt"
)

type valuer[T comparable] struct {

C-Pro

package main

import (
	"context"
	"database/sql"
	"database/sql/driver"
	"fmt"
	"strconv"
	"time"

C-Pro

package main_test

import (
	"testing"
)

func cmp(a, b string) bool {
	if len(a) != len(b) {
		return false
	}

C-Pro

ExcelJS

The task is to make an Excel-like table with support for the simplest formulas. Recalculation of values in the cells should occur immediately upon loss of focus and affect only those cells whose values should be changed. Do not recalculate the whole table every time (if not necessary). Use pure JS (ES6), HTML, CSS. Use third-party frameworks, libraries is not encouraged for this task. Task result will be viewed with the latest version of chrome (desktop and mobile).

Let the table size be 100x1000 (WxH)

C-Pro

package concatbench

import (
	"fmt"
	"strings"
	"testing"
)

const (
	s1 = "четёре чёрненьких чумазеньких чертёнка, "

C-Pro

from curses import wrapper
from math import sin
from math import radians
import time


def wave(scr):
    TEXT='VLADIVOSTOK'
    scr.clear()
    my, mx = scr.getmaxyx()

C-Pro

Your task is to build one page web application. It will allow user to see length (in days) of continuous periods of sunshine in a given city:

• Historical longest period of sunny days in given city
• Longest period in current month
• Length of current period of sunshine

Length of sunny days period is a number of consecutive days in a given city when the sun is shining (no overcast clouds, no precipitation).

User can select city from dropdown list and frontend should request for data from backend without reloading the page (e.g. REST or smth. similar). Request should be processed in less then 30ms (our service will be very popular!).

C-Pro

Ссылки

На материалы в докладе про пряник

• TensorFlow playground (картинка со спиралью с первого слайда
• Машина MENACE для игры в крестики-нолики
• Марковский процесс и reinforcement learning
• DQN от DeepMind
• Среда для обучения RL агентов OpenAI gym
• OpenAI
• OpenAI Five (бот для Dota2)