Garrison Jensen GarrisonJ

## learning-lens.md

      
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                taksuyu
                / learning-lens.md
            
            
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              October 30, 2017 23:46
            
              
                A list of material that helped me learn the lens package.
              
          
    Learning Lens

I tend to focus on core concepts quite a bit more than actual examples, so that
the fundamental understanding of what the examples are trying to teach me is
building on skills I already have just haven't figured out how to use yet.
tl;dr Your mileage may vary. I learn kind of counterintuitively for others.
Since this seemed to be popular, I decided to make a repository for content about haskell topics that you can find here new materials for lens will be put here

  
## gist:ef5d907deeb5c1c8e1f2
https://xkcd.com/
http://www.schlockmercenary.com
http://axecop.com/
http://www.gunnerkrigg.com/
http://avasdemon.com/
http://www.smbc-comics.com/
http://www.qwantz.com/index.php
http://www.lackadaisycats.com/
http://thepunchlineismachismo.com/
http://www.darthsanddroids.net/

## introrx.md

      
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                staltz
                / introrx.md
            
            
              Last active
              May 23, 2024 20:07
            
              
                The introduction to Reactive Programming you've been missing
              
          
    The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.


## latency.markdown

      
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                seboudry
                / latency.markdown
            
            
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              February 15, 2023 12:45
                — forked from hellerbarde/latency.markdown
            
          
    Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
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 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 4X memory

  
## ghcPkgUtils.sh
# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.
# ghc-pkg-clean -f cabal/dev/packages*.conf also works.
function ghc-pkg-clean() {
  for p in `ghc-pkg check $* 2>&1  | grep problems | awk '{print $6}' | sed -e 's/:$//'`
  do
    echo unregistering $p; ghc-pkg $* unregister $p
  done
}

# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.

## app.py
import os
from flask import Flask, render_template, request
import stripe

stripe_keys = {
  'secret_key': os.environ['SECRET_KEY'],
  'publishable_key': os.environ['PUBLISHABLE_KEY']
}

stripe.api_key = stripe_keys['secret_key']

## gist:1185421
# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.
# ghc-pkg-clean -f cabal/dev/packages*.conf also works.
function ghc-pkg-clean() {
    for p in `ghc-pkg check $* 2>&1  | grep problems | awk '{print $6}' | sed -e 's/:$//'`
    do
        echo unregistering $p; ghc-pkg $* unregister $p
    done
}

# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.

## kb-ipad.html
<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <title>Keyboard</title>
    <style type="text/css">
#keyboard {
  background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(0%, #9199A4), color-stop(50%, #7D8591), color-stop(100%, #535C69));
  border-radius: 10px;
  background-color: #9199A4;
	https://xkcd.com/
	http://www.schlockmercenary.com
	http://axecop.com/
	http://www.gunnerkrigg.com/
	http://avasdemon.com/
	http://www.smbc-comics.com/
	http://www.qwantz.com/index.php
	http://www.lackadaisycats.com/
	http://thepunchlineismachismo.com/
	http://www.darthsanddroids.net/
	# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.
	# ghc-pkg-clean -f cabal/dev/packages*.conf also works.
	function ghc-pkg-clean() {
	for p in `ghc-pkg check $* 2>&1 \| grep problems \| awk '{print $6}' \| sed -e 's/:$//'`
	do
	echo unregistering $p; ghc-pkg $* unregister $p
	done
	}

	# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.
	import os
	from flask import Flask, render_template, request
	import stripe

	stripe_keys = {
	'secret_key': os.environ['SECRET_KEY'],
	'publishable_key': os.environ['PUBLISHABLE_KEY']
	}

	stripe.api_key = stripe_keys['secret_key']
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-type" content="text/html; charset=utf-8">
	<title>Keyboard</title>
	<style type="text/css">
	#keyboard {
	background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(0%, #9199A4), color-stop(50%, #7D8591), color-stop(100%, #535C69));
	border-radius: 10px;
	background-color: #9199A4;