vasnake

package org.apache.spark.sql.fizzbuzz.udf

import org.apache.spark.sql.api.java.UDF1
import scala.util.Try
import org.scalatest._
import flatspec._

class FizzBuzz extends UDF1[Any, String] {
  def dbg(s: => String): Unit = println(s)

vasnake

#!/usr/bin/env python
# -*- mode: python; coding: utf-8 -*-
# (c) Valik mailto:vasnake@gmail.com

r""" Global storage Flask extension.
In Flask, it's possible to store data across many requests.
But you must be aware of threading issues in that case.

Thanks to flask_sqlalchemy
https://github.com/mitsuhiko/flask-sqlalchemy/blob/master/flask_sqlalchemy.py

vasnake

• Plain Functional Programming by Martin Odersky
• https://youtu.be/YXDm3WHZT5g
• IMPLICIT FUNCTION TYPES
• scala/scala3#1775
• https://contributors.scala-lang.org/t/implicit-function-types/219
• https://www.google.ru/search?q=implicit+function+type+vs+kleisli+arrow
• https://www.google.com/search?q=implicit+function+types+abstract+over+context
• Implicit Implications (part 3): The Future is Functional (implicitly)

vasnake

Explaining Miles's Magic

Miles Sabin recently opened a pull request fixing the infamous SI-2712. First off, this is remarkable and, if merged, will make everyone's life enormously easier. This is a bug that a lot of people hit often without even realizing it, and they just assume that either they did something wrong or the compiler is broken in some weird way. It is especially common for users of scalaz or cats.

But that's not what I wanted to write about. What I want to write about is the exact semantics of Miles's fix, because it does impose some very specific assumptions about the way that type constructors work, and understanding those assumptions is the key to getting the most of it his fix.

For starters, here is the sort of thing that SI-2712 affects:

def foo[F[_], A](fa: F[A]): String = fa.toString

vasnake

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

vasnake

/*
Есть события: (время начала, время конца, тег "в метро", айди территории, флаг "вход", флаг "выход"),
заполнены поля могут быть как угодно, очередность событий может быть любая
*/
    case class TelEventRecord(bts: Int, ets: Int,
                        transport: String,
                        zid: Int = -1,
                        enter: Boolean = false, exit: Boolean = false)
/*
Надо обработать последовательность таких событий, чтобы получить последовательность "поездок"

vasnake

// type classes example

// based on material from SICP 1.3.1 high-order procedures
// inspired by
// The Neophyte's Guide to Scala Part 12: Type Classes
// http://danielwestheide.com/blog/2013/02/06/the-neophytes-guide-to-scala-part-12-type-classes.html

// scala.math.Numeric is a type class
// that define an interface

vasnake

--- core.py.orig        2014-01-14 19:37:27.287907299 +0400
+++ core.py     2014-01-14 19:45:17.137864423 +0400
@@ -87,14 +87,18 @@
         # Note: All libtorrent python bindings to set plugins/extensions need to be disabled
         # due to  GIL issue. https://code.google.com/p/libtorrent/issues/detail?id=369
         # Setting session flags to 1 enables all libtorrent default plugins
-        self.session = lt.session(lt.fingerprint("DE", *version), flags=1)
+        self.session = lt.session(lt.fingerprint("DE", *version), flags=0)
+        self.session.add_extension("ut_pex")
+        self.session.add_extension("ut_metadata")

vasnake

// deprecated. using meapp.coffee now

console.log('meapp enter');

var vappFactory = null;
define(
    ["dojo/_base/declare", "dojo/dom", 'dojo/has',
    "vs/mpvlib"],
    function(declare, dom, has, mpvlib) {
        console.log('meapp dojo/define. define app classes');

vasnake

--- rpcserver.py.orig	2014-10-25 19:03:15.841366375 +0400
+++ rpcserver.py	2014-10-25 19:05:40.753392389 +0400
@@ -131,7 +131,8 @@
         SSL transport.
         """
         ssl_dir = deluge.configmanager.get_config_dir("ssl")
-        ctx = SSL.Context(SSL.SSLv3_METHOD)
+        ctx = SSL.Context(SSL.SSLv23_METHOD)
+        ctx.set_options(SSL.OP_NO_SSLv2 & SSL.OP_NO_SSLv3)
         ctx.use_certificate_file(os.path.join(ssl_dir, "daemon.cert"))