ljank

scala> class Parent { def f = this }
defined class Parent

scala> class Child extends Parent { def newF = this }
defined class Child

scala> val c = new Child
c: Child = Child@5b966ac7

scala> c.newF

brson

Edit: This list is now maintained in the rust-anthology repo.

• Introduction
  • Understanding Over Guesswork
  • An Alternative Introduction to Rust
  • Rust and CSV Parsing
• Ownership
  • Where Rust Really Shines
  • Rust Means Never Having to Close a Socket
• The Problem with Single-threaded Shared Mutability

gyribeiro

based on https://www.reddit.com/r/vim/comments/24g8r8/italics_in_terminal_vim_and_tmux/

• Check if italic font is supported:

$ echo -e "\e[3mitalic\e[23m"

• Also check:

$ infocmp $TERM | grep sitm
 sgr0=\E(B\E[m, sitm=\E[3m, smacs=\E(0, smam=\E[?7h,

mdonkers

#!/usr/bin/env python3
"""
License: MIT License
Copyright (c) 2023 Miel Donkers

Very simple HTTP server in python for logging requests
Usage::
    ./server.py [<port>]
"""
from http.server import BaseHTTPRequestHandler, HTTPServer

bdmorin

2014-07-14 Reverse SSHFS mounts (fs push) https://blog.dhampir.no/content/reverse-sshfs-mounts-fs-push

sshfs is a neat way of mounting a file system from one machine to another over an encrypted ssh channel. However, for machine CLIENT to access a file system that resides on machine HOST, CLIENT must generally be able to log in to HOST. In addition, CLIENT must be able to connect to HOST in the first place, though a tunnel from HOST to CLIENT can easily mediate this if a connection can only be initiated in that direction.

However, the login itself may still be an issue. You might not want to type your password for HOST on CLIENT, or set up a keyless login using public/private keys. You might not entirely trust CLIENT, from which you want to access the file system. dpipe to the rescue.

Using dpipe, available in the “vde2” package on Debian (and, likely, derivatives), you can initiate the connection the other way and use sshfs in “slave mode”, in which it communicates over standard input and output instead o

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

longcao

import java.io.InputStream

import org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils
import org.apache.spark.sql.{ DataFrame, Row }

import org.postgresql.copy.CopyManager
import org.postgresql.core.BaseConnection

val jdbcUrl = s"jdbc:postgresql://..." // db credentials elided
val connectionProperties = {

joepie91

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

• A Russian translation of this article can be found here, contributed by Timur Demin.
• A Turkish translation can be found here, contributed by agyild.
• There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

jiminoc

import scalaz._
import scalaz.std.list._
import scalaz.syntax.monad._
import scalaz.syntax.monoid._
import scalaz.syntax.traverse.{ToFunctorOps => _, _}

class Foo[F[+_] : Monad, A, B](val execute: Foo.Request[A] => F[B], val joins: Foo.Request[A] => B => List[Foo.Request[A]])(implicit J: Foo.Join[A, B]) {

def bar: Foo[({type l[+a]=WriterT[F, Log[A, B], a]})#l, A, B] = {
    type TraceW[FF[+_], +AA] = WriterT[FF, Log[A, B], AA]