k-tsj

import java.io._
import java.net._

object Main {
  trait StreamTypeInferencer[A, B]
  object StreamTypeInferencer {
    implicit object InputStreamInputStream
      extends StreamTypeInferencer[InputStream, InputStream]
    implicit object InputStreamBufferedInputStream
      extends StreamTypeInferencer[BufferedInputStream, InputStream]

benelog

import static com.sun.btrace.BTraceUtils.*;
import com.sun.btrace.BTraceUtils.Aggregations;
import com.sun.btrace.BTraceUtils.Sys;
import com.sun.btrace.aggregation.Aggregation;
import com.sun.btrace.aggregation.AggregationFunction;
import com.sun.btrace.annotations.BTrace;
import com.sun.btrace.annotations.Duration;
import com.sun.btrace.annotations.Kind;
import com.sun.btrace.annotations.Location;
import com.sun.btrace.annotations.OnEvent;

etorreborre

package object time {

  // Unboxed newtypes, credit to @milessabin and @retronym
  type Tagged[U] = { type Tag = U }
  type @@[T, U] = T with Tagged[U]

  class Tagger[U] {  def apply[T](t : T) : T @@ U = t.asInstanceOf[T @@ U] }
  def tag[U] = new Tagger[U]

  trait Day

nicerobot

#!/bin/sh
policy=${HOME}/.jstatd.all.policy
[ -r ${policy} ] || cat >${policy} <<'POLICY'
grant codebase "file:${java.home}/../lib/tools.jar" {
  permission java.security.AllPermission;
};
POLICY

jstatd -J-Djava.security.policy=${policy} &

jasonrudolph

# Credit http://stackoverflow.com/a/2514279
for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ci %cr" $branch | head -n 1` \\t$branch; done | sort -r

jzi96

SET SERVEROUTPUT ON
exec dbms_output.enable(1000000);
DECLARE
    v_typ          VARCHAR2(32);
    v_name         VARCHAR2(32);
    v_constraint   VARCHAR2(32);
    v_sql          VARCHAR2(100);

    CURSOR c_objekte IS
        SELECT   typ, NAME

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

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

ralfstx

#!/bin/bash
#
# Tool to maintain p2 composite repositories

USAGE="Usage:
  `basename "$0"` <repo-dir> [options] operation, operation ...
  Options:
    --name <repo name>
      the repository name
    --eclipse <eclipse install dir>

nicoulaj

#!/bin/sh
# Looks for /tmp/hsperfdata_* files leaved by unclean Java processes
# shutdowns and remove them.
# This should be executed by a user without sufficient rights to delete
# other users files...

for hsperfdata in /tmp/hsperfdata_*/*; do
  ps -p `basename ${hsperfdata}` &> /dev/null || rm -vf $hsperfdata
done