chriseckhardt

Netflix JavaScript Talks - Debugging Node.js in Production

Notes from https://www.youtube.com/watch?v=O1YP8QP9gLA

"Let's work the problem, people. Let's not make things any worse by guessing."

Apply the Scientific Method

1. Construct Hypothesis of what's happening
2. Collect data
3. Analyze data and draw a conclusion

Rich-Harris

Edit — February 2019

This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:

• TC39 is currently moving forward with a slightly different version of TLA, referred to as 'variant B', in which a module with TLA doesn't block sibling execution. This vastly reduces the danger of parallelizable work happening in serial and thereby delaying startup, which was the concern that motivated me to write this gist
• In the wild, we're seeing (async main(){...}()) as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problems
• Therefore, a version of TLA that solves the original issue is a valuable addition to the language, and I'm in full support of the current proposal, which you can read here.

I'll leave the rest of this document unedited, for archaeological

baweaver

# Oh dear god why

___ = (
  _ = '          ' =~ /$/ # 10 - apparently EOL match works like that on spaces
) *
_ + # * 10 -> 100
_ + # + 10 -> 110
_ / # + 10 /
(
  (__=$$/$$) + #   1

chriseckhardt

#!/bin/bash
#
# Swap/Roll a file handle between processes.
#
# Posted at https://groups.google.com/forum/#!topic/alt.hackers/0ZMsMc5DvUw
#
# Usage:
#
#    fdswap.sh <old logfile>    <new logfile> [optional pids]
#    fdswap.sh /var/log/logfile /tmp/logfile  [pids]

lukaszx0

kwargs

This is a simple hash extension which imitates behaviour of ruby's 2.1 keyword arguments. Check out examples below and spec file for sample usage.

Examples

Required args

def foobar(args = {})

leroux

Haskell Resources

• Learning Haskell
• Learn You a Haskell for Great Good
  • Learn You A Haskell Exercises
• Real World Haskell
• FPComplete's School of Haskell
• Haskell Wikibook
• Write Yourself a Scheme in 48 Hours
• Parallel and Concurrent Programming in Haskell

fernandoaleman

# Start the old vagrant
$ vagrant init centos-6.3
$ vagrant up

# You should see a message like:
#  [default] The guest additions on this VM do not match the install version of
#  VirtualBox! This may cause things such as forwarded ports, shared
#  folders, and more to not work properly. If any of those things fail on
#  this machine, please update the guest additions and repackage the
#  box.

misterbrownlee

I just had to set up Jenkins to use GitHub. My notes (to myself, mostly):

Detailed Instructions

For setting up Jenkins to build GitHub projects. This assumes some ability to manage Jenkins, use the command line, set up a utility LDAP account, etc. Please share or improve this Gist as needed.

Install Jenkins Plugins

• get both the git and github plugin
• http://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin