MMesch

MMesch

expelledboy

#!/bin/bash

# !!WARNING!!
# This will DELETE all efforts you have put into configuring nix
# Have a look through everything that gets deleted / copied over

nix-env -e '.*'

rm -rf $HOME/.nix-*
rm -rf $HOME/.config/nixpkgs

ForgottenUmbrella

Package Management in C++ with Conan for Beginners

C++ package management can be complicated.

Below are some key tools involved:

Make

Make runs commands defined in a Makefile, for example, to build and install programs with the compiler and linker. For our purposes, we won't worry about what this looks like; you only need to understand its purpose in relation to CMake.

sj26

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit

MikeInnes

# Repeat an operation n times, e.g.
# @dotimes 100 println("hi")

macro dotimes(n, body)
  quote
    for i = 1:$(esc(n))
      $(esc(body))
    end
  end
end

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