eashish93

vs Questions

---

1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)

teamon

defmodule Box do
  defmacro __using__(_env) do
    quote do
      import Box
    end
  end

  @doc """
  Define module with struct and typespec, in single line

1242035

Source: https://www.cyberciti.biz/tips/linux-unix-bsd-nginx-webserver-security.html

This page collects hints how to improve the security of nginx web servers running on Linux or UNIX-like operating systems.

Default Config Files and Nginx Port

/usr/local/nginx/conf/ or /etc/nginx/– The nginx server configuration directory and /usr/local/nginx/conf/nginx.conf is main configuration file.
/usr/local/nginx/html/ or /var/www/html– The default document location.
/usr/local/nginx/logs/ or /var/log/nginx – The default log file location.
Nginx HTTP default port : TCP 80

tenderlove

##
# Parallel test Runner for Rails
#
# This is a spike implementation for multi-process parallel testing with Rails.
# Only works with SQLite3 right now, and doesn't clean up.
#
# Here is an example of how to use it:
#
# ```ruby
#   require 'forking_executor'

itsderek23

defmodule ScoutApm.Absinthe.Plug do
  alias ScoutApm.Internal.Layer

  def init(default), do: default

  def call(conn, _default) do
    ScoutApm.TrackedRequest.start_layer("Controller", action_name(conn))

    conn
    |> Plug.Conn.register_before_send(&before_send/1)

purpleidea

#!/bin/bash
# james shubin, agplv3+
# pause until key press and then continue
# https://ttboj.wordpress.com/2017/01/06/ten-minute-hacks-process-pause-resume

if [ ! "$#" -eq 1 ]; then
	echo "Usage: `basename $0` <process>"
	echo "Pauses process until key press and then continues!"
	exit 1
fi

beeman

# Stop all containers
docker stop `docker ps -qa`

# Remove all containers
docker rm `docker ps -qa`

# Remove all images
docker rmi -f `docker images -qa `

# Remove all volumes

oklaiss

defmodule KeyValueStore do
  use GenServer

  @me __MODULE__

  @moduledoc """

  Implement a simple key-value store as a server. This
  version creates a named server, so there is no need
  to pass the server pid to the API calls.

ryanermita

Optimistic Locking assumes that a database transaction conflict is very rare to happen. It uses a version number of the record to track the changes. It raise an error when other user tries to update the record while it is lock.

usage

Just add a lock_version column to the table you want to place the lock and Rails will automatically check this column before updating the record.

Pessimistic locking assumes that database transaction conflict is very likely to happen. It locks the record until the transaction is done. If the record is currently lock and the other user make a transaction, that second transaction will wait until the lock in first transaction is release.

usage

reinh

Priority Queues
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                   INSERT  DEL-MIN  MIN  DEC-KEY  DELETE  MERGE
   binary          log n   log n    1    log n    log n   n
   binomial        1       log n    1    log n    log n   log n
   Fibonacci       1       log n†   1    1†       log n†  log n
   Pairing         1†      log n†   1†   1†       log n†  1†
   Brodal-Okasaki  1       log n    1    1        log n   1