PJUllrich

Big-O Time Complexities for Elixir data structures

Map [1]

Operation	Time Complexity
Access	O(log n)
Search	O(log n)
Insertion	O(n) for <= 32 elements, O(log n) for > 32 elements [2]
Deletion	O(n) for <= 32 elements, O(log n) for > 32 elements

christianparpart

Synchronized Output

Synchronized output is merely implementing the feature as inspired by iTerm2 synchronized output, except that it's not using the rare DCS but rather the well known SM ? and RM ?. iTerm2 has now also adopted to use the new syntax instead of using DCS.

Semantics

When rendering the screen of the terminal, the Emulator usually iterates through each visible grid cell and renders its current state. With applications updating the screen a at higher frequency this can cause tearing.

This mode attempts to mitigate that.

mindflayer

import argparse
import json
import os
import subprocess


ENCODING = "utf-8"


def check_output(cmd, split_lines=False):

uobikiemukot

package main

import (
	"bufio"
	"bytes"
	"fmt"
	"image"
	"image/jpeg"
	_ "image/png"
	"io"

miguelmota

package ciphers

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/sha512"
	"crypto/x509"
	"encoding/pem"
        "log"
)

nikneroz

Elixir + Phoenix Framework + Guardian + JWT + Comeonin

Preparing environment

We need to generate secret key for development environment.

mix phoenix.gen.secret
# ednkXywWll1d2svDEpbA39R5kfkc9l96j0+u7A8MgKM+pbwbeDsuYB8MP2WUW1hf

Let's generate User model and controller.

simonw

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

chalmagean

# Install https://github.com/rubencaro/cipher first
require Cipher.Helpers, as: H

defmodule Enc do
  @random_key H.env(:keyphrase) |> Cipher.Digest.generate_key

  def stream_encrypt(xml) do
    {_, result} =
      :crypto.stream_init(:rc4, @random_key)
      |> :crypto.stream_encrypt(xml)

sid24rane

#include <stdio.h>
#include <stdbool.h>
#include <string.h>

#define MAX_SIZE 100

struct Stack{
    int top;
    char arr[MAX_SIZE];
} st;

moeseth

from pydub import AudioSegment
from matplotlib import pyplot as plot
from PIL import Image, ImageDraw
import numpy as np
import os

src = "./test.mp3"

audio = AudioSegment.from_file(src)
data = np.fromstring(audio._data, np.int16)