x4lldux

%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1996-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0

x4lldux

defmodule PropCheckConfig do
  def config() do
    [:quiet]
    |> push("NUMTESTS", "30", :numtests, &opt_num_value/2)
    |> maybe_push("VERBOSE", :verbose)
    |> maybe_push("MAX_SIZE", :max_size, &opt_num_value/2)
  end

  defp opt_num_value(name, val), do: {name, String.to_integer(val)}

x4lldux

defmodule Benchit do

  def run do
    ml = for i<- 1..1_000_000, do: {i,[]}, into: %{}
    mt = for i<- 1..1_000_000, do: {i,true}, into: %{}
    bl = :erlang.term_to_binary ml
    bt = :erlang.term_to_binary mt

    Benchee.run %{
      "serialize empty list" => fn -> :erlang.term_to_binary ml end,

x4lldux

{{12, 9, 26}, 1}
{{12, 9, 27}, 2}
{{12, 9, 28}, 3}
{{12, 9, 29}, 2}
{{12, 9, 30}, 2}
{{12, 9, 31}, 2}
{{12, 9, 32}, 2}
{{12, 9, 33}, 2}
{{12, 9, 34}, 2}
{{12, 9, 35}, 2}

x4lldux

# with xref_runner                              without xref_runner

$ for i in `seq 10`; do rm -rf _build/shared/lib/ecto/; time (mix compile &>/dev/null); done
real	0m8.249s                                real	0m7.183s 
user	0m12.944s                               user	0m11.824s
sys	0m2.920s                                sys	0m2.788s     
                                                                 
real	0m8.654s                                real	0m7.337s 
user	0m13.084s                               user	0m11.916s
sys	0m3.432s                                sys	0m2.928s     

x4lldux

#!/usr/bin/perl

my $target = '192.241.81.52';
my $port   = 80;
 
use DDP;
use Net::Frame::Device;
use Net::Write::Layer qw(:constants);
use Net::Write::Layer3;
use Net::Frame::Simple;

x4lldux

defmodule A do
  def f(a \\ "a", b, c \\ "c", d \\ "d") do
    IO.inspect a
    IO.inspect b
    IO.inspect c
    IO.inspect d
    IO.puts "####\n"
  end

end

x4lldux

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

x4lldux

;; Smart beginning of the line
(defun x4-smarter-beginning-of-line ()
  "Move point to beginning-of-line or first non-whitespace character or first non-whitespace after a comment sign."
  (interactive "^")
  (let (
        (oldpos (point))
        (indentpos (progn
                     (back-to-indentation)
                     (point)
                     )

x4lldux

function getBlipLoggedUser() {
	var url = "http://api.blip.pl/statuses";
	var me = {};

	var json = jQuery.ajax({
		type: 'GET',
		url: url,
		async: false,
	}).responseText;
	var data = Utils.decodeJson(json);