romanitalian

type Foo struct {
	aaa bool // 1 by default. But with padding - 4.
	bbb int32 // 4 as max in this struct.
	ссс bool // 1 by default. But with padding - 4.
}

romanitalian

type Foo struct {
	aaa bool
	bbb int32
}

fmt.Println(unsafe.Sizeof(x)) // 8
fmt.Println(unsafe.Sizeof(y)) // 8

romanitalian

package main

import (
	"fmt"
	"unsafe"
)

type Foo struct {

}

romanitalian

# touch ~/.vimrc
# :w
# :source ~/.vimrc  ---- or ====> :so %
# :PlugInstall


call plug#begin('~/.vim/plugged')
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'morhetz/gruvbox'     
Plug 'jiangmiao/auto-pairs'

romanitalian

SELECT * FROM generate_series(1,10) ORDER BY 1::integer DESC; -- 1, 2, 3, ...
SELECT * FROM generate_series(1,10) ORDER BY 1::text DESC; -- 1, 2, 3, ...
SELECT * FROM generate_series(1,10) ORDER BY (2-1) DESC; -- 1, 2, 3, ...
SELECT * FROM generate_series(1,10) ORDER BY 1*1 DESC; -- 1, 2, 3, ...
SELECT * FROM generate_series(1,10) ORDER BY CASE WHEN true THEN 1 ELSE 1 END DESC; -- 1, 2, 3, ...
SELECT * FROM generate_series(1,10) ORDER BY array_position(ARRAY['one','two'], 'one') DESC; -- 1, 2, 3, ...

SELECT * FROM generate_series(1,10) ORDER BY 1 DESC; -- 10, 9, 8, ...

romanitalian

The series of prime numbers:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199

romanitalian

############# PHP7 #############

php --version

PHP 7.3.11 (cli) (built: Jun  5 2020 23:50:40) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.11, Copyright (c) 1998-2018 Zend Technologies

############# PHP8 #############

romanitalian

import math
from time import perf_counter

from numba import njit


@njit(fastmath=True)
def is_prime(num):
    if num == 2:
        return True

romanitalian

import math
from time import perf_counter


def is_prime(num):
    if num == 2:
        return True
    if num == 1 or not num % 2:
        return False
    for div in range(3, int(math.sqrt(num)) + 1, 2):

romanitalian

python3 --version
Python 3.8.5