Gazler

sysctl -w fs.file-max=12000500
sysctl -w fs.nr_open=20000500
ulimit -n 4000000
sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
sysctl -w net.ipv4.tcp_rmem='1024 4096 16384'
sysctl -w net.ipv4.tcp_wmem='1024 4096 16384'
sysctl -w net.core.rmem_max=16384
sysctl -w net.core.wmem_max=16384
wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb

zhiguangwang

Manage SSL Certificates for Mono with Certificate Manager

For more details, see certmgr.

Note for commands to work, certificate must be in DER format.

Valid certificate store names are:

• Trust (ROOT CA)
• CA (Intermediate CA)

JonathanTR

General

• Does the code perform its intended function?
• Is all the code easily understood?
• Is there any redundant or duplicate code?
• Is the code as modular as possible?
• Can any global variables be replaced?
• Is there any commented out code?
• Can any of the code be replaced with library functions?
• Can any logging or debugging code be removed?

radabass

El Capitan OSX Vagrant port forwarding rules to use privileged ports 80 and 443

Due to the OSX limitations in ports below 1024, in order to use them without running as root the virtualbox headless you can do the following workaround, (remember the command ipfw is deprecated on El Capitan)

In the Vagrant file use ports over 1024, for instance change 80 and 443 to 8080 and 8043.

  # Apache
  config.vm.network "forwarded_port", guest: 80, host: 8080

mrange

Railway Oriented Programming and F# Result

Full source: https://gist.github.com/mrange/aa9e0898492b6d384dd839bc4a2f96a1

Option<_> is great for ROP (Railway Oriented Programming) but we get no info on what went wrong (the failure value is None which carries no info).

With the introduction F# 4.1 we got Result<_, _> a "smarter" Option<_> as it allows us to pass a failure value.

However, when one inspects the signature of Result.bind one sees a potential issue for ROP:

StephenCleary

using System;
using System.Threading;

/// <summary>
/// A base class for disposables that need exactly-once semantics in a threadsafe way. All disposals of this instance block until the disposal is complete.
/// </summary>
/// <remarks>
/// <para>If <see cref="Dispose()"/> is called multiple times, only the first call will execute the disposal code. Other calls to <see cref="Dispose()"/> will wait for the disposal to complete.</para>
/// </remarks>
public sealed class AnonymousDisposable : IDisposable

dasMulli

#!/usr/bin/env bash
DOTNET_CLI_PATH="$(dirname $(which dotnet))/sdk/$(dotnet --version)"
export MSBuildExtensionsPath="$DOTNET_CLI_PATH/"
export CscToolExe="$DOTNET_CLI_PATH/Roslyn/RunCsc.sh"
export MSBuildSDKsPath="$DOTNET_CLI_PATH/Sdks"
msbuild /nologo /v:minimal "$@"

ninjarobot

# Sets up a development environment for Ubuntu 16.04.

sudo apt-get install -y curl

# Microsoft source
curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
sudo mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg
sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-xenial-prod xenial main" > /etc/apt/sources.list.d/dotnetdev.list'
sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main" > /etc/apt/sources.list.d/vscode.list'

haf

What should F# as a language contain?

• A default test framework like Expecto
• A default HTTP client like HTTP.fs
• A default web framework like Suave
• A default JS framework like Fable
• A default logging framework like Logary
• A default character parser combinator library like FParsec
• A default binary parser combinator library like FsAttoparsec
• A default concurrent programming framework like Hopac

timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).