nicebyte

#pragma once

#define DYN_ARR_OF(type) struct  { \
  type *data; \
  type *endptr; \
  uint32_t capacity; \
}

#if !defined(__cplusplus)
#define decltype(x) void*

LeCoupa

/* *******************************************************************************************
 * THE UPDATED VERSION IS AVAILABLE AT
 * https://github.com/LeCoupa/awesome-cheatsheets
 * ******************************************************************************************* */


// 0. Synopsis.
// http://nodejs.org/api/synopsis.html

maxk42

POLYMORPHISM AND GENERICS IN GO

Lately, Go has been getting a lot of flack for its lack of generics and parametric polymorphism. Whereas it doesn't have a specific language feature called "generics", generic type operations are very simple to implement. Here is a simple implementation of a generic collection type in Go demonstrating how it's done. Essentially, the type interface{} acts as a placeholder for any type. By making use of the empty interface, you can pass any type to a function much like you can in dynamically-typed languages.

Edit: Thanks to https://gist.github.com/mfenniak and https://gist.github.com/dominikh for pointing out that the add() function was equivalent to go's built-in append()

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