a1k0n

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <math.h>

#define debug(...)
//#define debug printf

// torus radii and distance from camera

noxasaxon

Learning Rust

Getting Started + Installation | Cheat Sheet

Table of Contents

1. How Do I Start Learning Rust?!
2. Ok, I Think I Know The Basics But How Do I Get Better?!
3. Rustlang Tooling
4. Helpful References Throughout Your Journey
5. The Rust Community
6. Recommended (but not free) Books & Courses

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

tjanczuk

// How to connect 5 publishers with 5 subscribers 
// over TCP using ZeroMQ's XPUB/XSUB proxy.

// sub (connect) 
//   <-8701-> 
// (bind) xpub <---> xsub (bind) 
//   <-8700-> 
// (connect) pub

var zmq = require('zmq');

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

gcr

int k;
double sin() ,cos();
main(){
    float A=0, B=0, i, j, z[1760];
    char b[1760];
    printf("\x1b[2J");
    for(; ; ) {
        memset(b,32,1760);
        memset(z,0,7040);
        for(j=0; 6.28>j; j+=0.07) {