hyunsik

int sum_unrolled( int n, int *a )
{
    int sum = 0;

    /* do the body of the work in a faster unrolled loop */
    for( int i = 0; i < n/4*4; i += 4 )
    {
        sum += a[i+0];
        sum += a[i+1];
        sum += a[i+2];

hyunsik

#!/bin/bash

if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] || [ -z $4 ]; then
  echo "usage: ../make_release src_dir tag_name version rc_num"
  exit -1;
fi

cd $1
CANDIDATE_TAG=`git tag --list $2`
if [ -z $CANDIDATE_TAG ]; then

hyunsik

use std::mem;

#[repr(packed)]
struct S4 {
    a: u8,
    b: [u8; 3],
}

#[repr(packed)]
struct S5 {

hyunsik

Debugging

• http://www.reddit.com/r/rust/comments/3334x6/trace_a_syntax_extension_for_tracing_function/

hyunsik

General

• [The Rust Programming Language] (http://killercup.github.io/trpl-ebook/)
• [Rust for C++ programmers] (http://alvalea.gitbooks.io/rust-for-cpp/content/index.html)
• [The Advanced Rust Programming Language] (http://cglab.ca/~abeinges/blah/turpl/_book/)
• [Rust for Rubyists] (http://www.rustforrubyists.com/book/index.html)

Abstraction

• [Abstraction without overhead: traits in Rust] (http://blog.rust-lang.org/2015/05/11/traits.html)

Ownership

hyunsik

• [CPU Flame Graphs] (http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html#FlameGraph)
• [perf Examples] (http://www.brendangregg.com/perf.html)

hyunsik

public interface FormatProperties {
  boolean splittable();

  boolean compressible();

  boolean seekable();

  boolean projectable();

  boolean filterable();

hyunsik

{
  "spaces": {
    "default": {
      "uri": "hdfs://localhost:8020/tajo/warehouse",
      "configs": [
        {"x": "y"},
        {"x": "y"}
      ]
    },
    "ssd1": {

hyunsik

{
  "pi": 3.141,
  "happy": true,
  "name": "Niels",
  "nothing": null,
  "answer": {
    "everything": 42
  },
  "list": [1, 0, 2],
  "object": {

hyunsik

CREATE EXTERNAL TABLE tweets (
      coordinates TEXT,
      favorited BOOL,
      truncated BOOL,
      created_at TIMESTAMP,
      id_str TEXT,
      /*entrities RECORD (
        urls ARRAY<TEXT>
      )*/
      in_reply_to_user_id_str TEXT,