Colin Kennedy moshen

## quick-tips-optimizing-jvm.md

      
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                djspiewak
                / quick-tips-optimizing-jvm.md
            
            
              Last active
              April 29, 2024 10:05
            
          
    Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information.  It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic.  So… here's my word of mouth.
This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

  
## DrawSineWave.html
<!DOCTYPE html>
<html>

<head>
    <title>Sine Wave</title>
    <script type="text/javascript">
        function showAxes(ctx,axes) {
            var width = ctx.canvas.width;
            var height = ctx.canvas.height;
            var xMin = 0;

## AWS_Single_LetsEncrypt.yaml
# Dont forget to set the env variable "certdomain", and either fill in your email below or use an env variable for that too.
# Also note that this config is using the LetsEncrypt staging server, remove the flag when ready!

Resources:
  sslSecurityGroupIngress:
    Type: AWS::EC2::SecurityGroupIngress
    Properties:
      GroupId: {"Fn::GetAtt" : ["AWSEBSecurityGroup", "GroupId"]}
      IpProtocol: tcp
      ToPort: 443

## Dockerrun.aws.json
{
  "AWSEBDockerrunVersion": "1",
  "Image": {
    "Name": "<AWS_ACCOUNT_ID>.dkr.ecr.us-east-1.amazonaws.com/<NAME>:<TAG>",
    "Update": "true"
  },
  "Ports": [
    {
      "ContainerPort": "443"
    }

## profile
wait4eth1() {
        CNT=0
        until ip a show eth1 | grep -q UP
        do
                [ $((CNT++)) -gt 60 ] && break || sleep 1
        done
        sleep 1
}
wait4eth1

## TrueColour.md

      
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                XVilka
                / TrueColour.md
            
            
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              April 8, 2024 14:02
            
              
                True Colour (16 million colours) support in various terminal applications and terminals
              
          
    THIS GIST WAS MOVED TO TERMSTANDARD/COLORS REPOSITORY.
PLEASE ASK YOUR QUESTIONS OR ADD ANY SUGGESTIONS AS A REPOSITORY ISSUES OR PULL REQUESTS INSTEAD!

  
## KeyboardHook.cs
public class KeyboardHook
{
  #region pinvoke details

  private enum HookType : int
  {
      WH_JOURNALRECORD = 0,
      WH_JOURNALPLAYBACK = 1,
      WH_KEYBOARD = 2,
      WH_GETMESSAGE = 3,

## pr.md

      
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              3659 stars
            
          
                piscisaureus
                / pr.md
            
            
              Created
              August 13, 2012 16:12
            
              
                Checkout github pull requests locally
              
          
    Locate the section for your github remote in the .git/config file. It looks like this:
[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

  
## nyan.pl
#!/usr/bin/env perl
use warnings;
use strict;

# Animation frames...
#   Color ASCII escape sequences, gzipped and base64 encoded, because
#   I thought 300 lines of animation frames was a little much.
my @frames = ( q(
H4sIAHywIU8AA+1d23XkOA797xT8oxBst+11z4QyMVQO+7ExbIAbydrdVXqCeJOEKNQZnzMURIq4
BEAU6jb19M/b59/vfz/fnv78z8uvj9u0+zz98yUFrrI6PG473nX8wA/68cSYI+fze/hlNkvz9fWV

## freenode.yml
conn_info:
    server: irc.freenode.net
    port: 6667
    channels:
        - '#foo'
        - '#bar'
    nick: foobot
    username: foobot
    name: defender of the universe
    ignore_list:
	<!DOCTYPE html>
	<html>

	<head>
	<title>Sine Wave</title>
	<script type="text/javascript">
	function showAxes(ctx,axes) {
	var width = ctx.canvas.width;
	var height = ctx.canvas.height;
	var xMin = 0;
	# Dont forget to set the env variable "certdomain", and either fill in your email below or use an env variable for that too.
	# Also note that this config is using the LetsEncrypt staging server, remove the flag when ready!

	Resources:
	sslSecurityGroupIngress:
	Type: AWS::EC2::SecurityGroupIngress
	Properties:
	GroupId: {"Fn::GetAtt" : ["AWSEBSecurityGroup", "GroupId"]}
	IpProtocol: tcp
	ToPort: 443
	{
	"AWSEBDockerrunVersion": "1",
	"Image": {
	"Name": "<AWS_ACCOUNT_ID>.dkr.ecr.us-east-1.amazonaws.com/<NAME>:<TAG>",
	"Update": "true"
	},
	"Ports": [
	{
	"ContainerPort": "443"
	}
	wait4eth1() {
	CNT=0
	until ip a show eth1 \| grep -q UP
	do
	[ $((CNT++)) -gt 60 ] && break \|\| sleep 1
	done
	sleep 1
	}
	wait4eth1
	public class KeyboardHook
	{
	#region pinvoke details

	private enum HookType : int
	{
	WH_JOURNALRECORD = 0,
	WH_JOURNALPLAYBACK = 1,
	WH_KEYBOARD = 2,
	WH_GETMESSAGE = 3,
	#!/usr/bin/env perl
	use warnings;
	use strict;

	# Animation frames...
	# Color ASCII escape sequences, gzipped and base64 encoded, because
	# I thought 300 lines of animation frames was a little much.
	my @frames = ( q(
	H4sIAHywIU8AA+1d23XkOA797xT8oxBst+11z4QyMVQO+7ExbIAbydrdVXqCeJOEKNQZnzMURIq4
	BEAU6jb19M/b59/vfz/fnv78z8uvj9u0+zz98yUFrrI6PG473nX8wA/68cSYI+fze/hlNkvz9fWV
	conn_info:
	server: irc.freenode.net
	port: 6667
	channels:
	- '#foo'
	- '#bar'
	nick: foobot
	username: foobot
	name: defender of the universe
	ignore_list: