Run:
grep "07/May/2016" app_access.log | goaccess -a --log-format '%h %^[%d:%t %^] "%r" %s %b "%R" "%u"' --date-format '%d/%b/%Y' --time-format '%H:%M:%S' > goaccess_may07.html
More here
; pen test on functional programming | |
(define (min-2 a b) (if (> a b) b a)) | |
(define (min-3 a b c) (min-2 (min-2 a b) (min-2 b c))) | |
(define (sq x) (* x x)) | |
(define (foo a b c) (cond ((= a (min-3 a b c)) (+ (sq b) (sq c))) | |
((= b (min-3 a b c)) (+ (sq a) (sq c))) | |
(else (+ (sq a) (sq b))))) |
import sys | |
from asyncio import coroutine, sleep | |
from aiohttp import web | |
@coroutine | |
def handle(request): | |
seconds = float(request.match_info.get('seconds', 1)) | |
yield from sleep(seconds) | |
text = "You've been waiting for {} seconds".format(seconds) | |
return web.Response(body=text.encode('utf-8')) |
Run:
grep "07/May/2016" app_access.log | goaccess -a --log-format '%h %^[%d:%t %^] "%r" %s %b "%R" "%u"' --date-format '%d/%b/%Y' --time-format '%H:%M:%S' > goaccess_may07.html
More here
Input | Py2 | Py3 | |
----------+-----+----- | |
5/2 | 2 | 2.5 | |
----------+-----+----- | |
5//2 | 2 | 2 | |
----------+-----+----- | |
5.0/2 | 2.5 | 2.5 | |
----------+-----+----- | |
5.0//2 | 2.0 | 2.0 | |
----------+-----+----- |
def next_row(prev_row): | |
row = [prev_row[0]] * (len(prev_row) + 1) | |
for idx in range(len(prev_row) - 1): | |
row[idx + 1] = (prev_row[idx] + prev_row[idx + 1]) | |
return row | |
def binomial(n, k, cache=None): | |
""" Calculates binomial coefficients using Pascal's triangle. | |
0 1 |
#include <chrono> | |
#include <iostream> | |
#include <stdlib.h> | |
#include <time.h> | |
#define SIZE_MEDIUM 4096 | |
#define SIZE_LARGE 16*4096 | |
#define ITER_COUNT 100000 | |
using namespace std; | |
using namespace std::chrono; |
'use strict'; | |
/** | |
* Пример использования socket.io namespaces в сервисе AngularJS. | |
* | |
* Цель: получить несколько отдельных каналов связи в рамках одного соединения. | |
* | |
* Проблема: так как сервисы в AngularJS являются синглтонами, не возможно | |
* получить несколько экземпляров сервиса Socket с разными значениями | |
* namespace. При этом хочется иметь отдельные сервисы, представляющие |
i => j1 = 2*i 0 => 0 1 => 2 2 => 4
j2 = 2*i+1 0 => 1 1 => 3 2 => 5
i = j//2 0 => 0 2 => 1 4 => 2
1 => 0 3 => 1 5 => 2
i => j1 = 2*i + 1 0 => 1 1 => 3 2 => 5
j2 = 2*i + 2 0 => 2 1 => 4 2 => 6
sample = [5, 3, 1, 2, 4] | |
n = len(sample) | |
mean = sum(sample)/n | |
median = (sample[n//2 - (n + 1)%2] + sample[n//2])/2 | |
stddev = (sum((e - mean)**2 for e in sample)/n)**0.5 | |
cnt = {} | |
for e in sample: | |
cnt[e] = cnt.get(e, 0) | |
cnt[e] += 1 | |
mode = sorted(cnt.keys(), key=lambda e: (cnt[e], -e))[-1] |