Coding practices are a source of a lot of arguments among programmers. Coding standards, to some degree, help us to put certain questions to bed and resolve stylistic debates. No coding standard makes everyone happy. (And even their existence is sure to make some unhappy.) What follows are the standards we put together on the Core team, which have become the general coding standard for all programming teams on new code development. We’ve tried to balance the need for creating a common, recognizable and readable code base with not unduly burdening the programmer with minor code formatting concerns.
| ///$(which true);FLAGS="-g -Wall -Wextra --std=c17 -O1 -fsanitize=address,undefined";THIS_FILE="$(cd "$(dirname "$0")"; pwd -P)/$(basename "$0")";OUT_FILE="/tmp/build-cache/$THIS_FILE";mkdir -p "$(dirname "$OUT_FILE")";test "$THIS_FILE" -ot "$OUT_FILE" || $(which clang || which gcc) $FLAGS "$THIS_FILE" -o "$OUT_FILE" || exit $?;exec bash -c "exec -a \"$0\" \"$OUT_FILE\" $([ $# -eq 0 ] || printf ' "%s"' "$@")" | |
| #include <stdio.h> | |
| int main() { | |
| printf("Hello world!\n"); | |
| return 0; | |
| } |
I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.
This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea
| #!/bin/sh | |
| # /etc/NetworkManager/dispatcher.d/pre-up.d/randomize-mac-addresses.sh | |
| # INSTALL | |
| # | |
| # > curl -L 'https://gist.github.com/paulfurley/46e0547ce5c5ea7eabeaef50dbacef3f/raw/56ee5dd5f40dec93b8f7438cbdeda5475ea3b5d2/randomize-mac-addresses.sh' |sudo tee /etc/NetworkManager/dispatcher.d/pre-up.d/randomize-mac-addresses.sh | |
| # > sudo chmod +x /etc/NetworkManager/dispatcher.d/pre-up.d/randomize-mac-addresses.sh | |
| # Configure every saved WiFi connection in NetworkManager with a spoofed MAC |
| # Description: Boxstarter Script | |
| # Author: Jess Frazelle <[email protected]> | |
| # Last Updated: 2017-09-11 | |
| # | |
| # Install boxstarter: | |
| # . { iwr -useb http://boxstarter.org/bootstrapper.ps1 } | iex; get-boxstarter -Force | |
| # | |
| # You might need to set: Set-ExecutionPolicy RemoteSigned | |
| # | |
| # Run this boxstarter by calling the following from an **elevated** command-prompt: |
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
apt-get update && apt-get install gdb
Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.
This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would
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.
- By Edmond Lau
- Highly Recommended 👍
- http://www.theeffectiveengineer.com/
| library(XML) | |
| library(uuid) | |
| library(stringr) | |
| library(plyr) | |
| library(reshape2) | |
| library(ggplot2) | |
| f <- "https://raw.githubusercontent.com/chris-taylor/USElection/master/data/electoral-college-votes.csv" | |
| electoral.college <- read.csv(f, header=FALSE) | |
| names(electoral.college) <- c("state", "electoral_votes") |
| /*<?php | |
| //*/public class PhpJava { public static void main(String[] args) { System.out.printf("/*%s", | |
| //\u000A\u002F\u002A | |
| class PhpJava { | |
| static function main() { | |
| echo(//\u000A\u002A\u002F | |
| "Hello World!"); | |
| }} | |
| //\u000A\u002F\u002A | |
| PhpJava::main(); |