nvartolomei

#define lambda(return_type, function_body) \
  ({ \
    return_type __fn__ function_body \
    __fn__; \
  })

// Use like this:

int (*max)(int, int) = lambda (int, (int x, int y) { return x > y ? x : y; });

nvartolomei

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
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD               150,000   ns    0.15 ms
Read 1 MB sequentially from memory      250,000   ns    0.25 ms
Round trip within same datacenter       500,000   ns    0.5  ms

nvartolomei

/**
 * A "Left-leaning Red-Black Tree"
 * 
 * http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf
 */
public class LLRB<K extends Comparable<K>, V> {

    public static void main(String[] args) {
        LLRB<String, String> llrb = new LLRB<String, String>();
        

nvartolomei

#!/usr/bin/env bash

# Check for jdk
if test ! $(which javac)
then
  echo "  x JDK not found. Please install it:"
  echo "    http://goo.gl/7mdf0"
  echo
  echo "    Or check PATH"
  exit

nvartolomei

yes 'c=(╱ ╲);printf ${c[RANDOM%2]}'|bash

nvartolomei

int is_urlschemechar(int first_flag, int ch)
{
    /*
	 * The set of valid URL schemes, as per STD66 (RFC3986) is
	 * '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check
	 * of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version
	 * of check used '[A-Za-z0-9]+' so not to break any remote
	 * helpers.
	 */
	int alphanumeric, special;

nvartolomei

Frontend Development

Attention: if you attempt to fork this gist, github will think that you are a spammer and you will have to confirm that you are human with them. Apparantly there are too many links in this list. Also I update it rather frequently (see revisions on the left), so it's probably wise to not fork it anyway.

• Guides
  • Hack Design
  • Designer School
  • TheExpressiveWeb
  • Talks To Help You Become A Better Front-End Engineer In 2013
• Web Development Teaching Materials

nvartolomei

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Scaling Twitter: Making Twitter 10000 Percent Faster
• Scaling Twitter
• Blaine Cook on Scaling Twitter - YouTube

nvartolomei

The glory of the disconnect key sequence: a newline followed by ~.. It works like a charm.

nvartolomei

node_modules/**/*.node
node_modules/**/*.o
node_modules/**/*.a
node_modules/**/*.mk
node_modules/**/*.gypi
node_modules/**/*.target
node_modules/**/.deps/
node_modules/**/build/Makefile
node_modules/**/**/build/Makefile