hanksudo

%%% xmltest.erl
%%%
%%% @author Hank Wang <drapho@gmail.com>
%%%
%%% @doc simple sample to parse XML by xmerl
%%%

-module(xmltest).

-include_lib("xmerl/include/xmerl.hrl"). 

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

nicoulaj

#!/bin/bash

# Get temp dir
tmpdir=$(mktemp -d)

# Generate test
cat > ${tmpdir}/ListenToSignal.java <<EOF
import sun.misc.Signal;
import sun.misc.SignalHandler;
public class ListenToSignal {

martijnvogten

import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;

import org.slf4j.Logger;

public class LoggingOutputStream extends OutputStream {
    
	public static void redirectSysOutAndSysErr(Logger logger) {
		System.setOut(new PrintStream(new LoggingOutputStream(logger, LogLevel.INFO)));

psayre23

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

whlteXbread

Accessing Your [fast-ai, AWS] Jupyter Notebook from Anywhere

Some networks out in the world don't allow traffic on all ports. For the most part though, HTTP is open just about everywhere.

As we know, Jupyter notebooks don't operate on the standard HTTP port. What follows are a couple ways to use commonly open ports to access your notebook.

I'll discuss two methods, both with their advantages and disadvantages:

• Using SSH to tunnel HTTP traffic through an open SSH port

a7madgamal

FINALLY no need for tricks!

bonus tip: for more darkness > https://darkreader.org/

sanchezzzhak

SELECT table,
    formatReadableSize(sum(bytes)) as size,
    min(min_date) as min_date,
    max(max_date) as max_date
    FROM system.parts
    WHERE active
GROUP BY table

dideler

# Use this script to test that your Telegram bot works.
#
# Install the dependency
#
#   $ gem install telegram_bot
#
# Run the bot
#
#   $ ruby bot.rb
#