Pavel Popov velppa

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Bringing search capabilities of Vio.com to the next level. Personal interests – Emacs, Clojure and data-intensive applications.

velppa / ledger.ipynb

Created August 5, 2014 06:15

IPython notebook to compare multiple period in Ledger

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velppa / ledger-compare-periods.clj

Created August 5, 2014 05:38

	(ns ledger-reports.core
	(:gen-class))

	(require '[clojure.data.csv :as csv]
	'[clojure.java.io :as io])


	(defn read-csv
	[filename]
	(def csv

velppa / 3.hs

Last active August 29, 2015 13:58

Project Euler solutions


	-- take step in eratosphen cell by removing all multipliers of x in xs
	ec_step :: Integer -> [Integer] -> [Integer]
	ec_step 1 xs = xs
	ec_step x xs = [ j \| j <- xs, mod j x /= 0 ]


	-- eratosphen cell recursive
	ec_recc :: ([Integer], [Integer]) -> ([Integer], [Integer])
	ec_recc (ps, []) = (ps, [])

velppa / timedelta.txt

Created March 11, 2014 19:29

	# rbd at mac-mini in ~/Sites/iseetheline.ru on git:master x [23:27:40]
	$ python
	Python 2.7.5 (default, Jun 8 2013, 12:45:21)
	[GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)] on darwin
	Type "help", "copyright", "credits" or "license" for more information.
	>>> from datetime import timedelta as t
	>>> x = t(days=3)
	>>> y = t(days=2)
	>>> (x-y)*0.5
	Traceback (most recent call last):

velppa / gist:7823911

Last active December 30, 2015 11:39

	nmap <buffer> <silent> ]] :call search('\\c^\\<select\\>', 'W' )<CR>
	nmap <buffer> <silent> [[ :call search('\\c^\\<select\\>', 'bW' )<CR>

	" abbreviations
	iab <buffer> maxdate DATE'5999-12-31'
	iab <buffer> select SELECT
	iab <buffer> from FROM
	iab <buffer> and AND
	iab <buffer> or OR
	iab <buffer> on ON

velppa / Ashley.html

Created November 23, 2013 08:27

Ashley theme for Tumblr

	<!DOCTYPE html>
	<!--

	Theme: Ashley v0.5
	Author: Jxnblk [http://jxnblk.com]
	For: Tumblr [http://tumblr.com/]
	Terms: Protected under Creative Commons.

	-->
	<html lang="en">

velppa / montyhall.py

Created October 25, 2013 14:25

	__author__ = 'U_M0AZC'

	import random
	import matplotlib.pyplot as plt


	def set_choices(doors=3):
	correct_choice = -1
	choices = [0 for i in range(doors)]
	random.seed()

velppa / trollop.rb

Last active December 20, 2015 10:38

	require 'trollop'

	class Test
	attr_reader :a
	attr_reader :opts
	def initialize
	@a = 'qwer'
	@opts = Trollop::options do
	opt :monkey, "Use monkey mode" # a flag --monkey, defaulting to false
	opt :goat, "Use goat mode", :default => true # a flag --goat, defaulting to true

velppa / gist:6116592

Created July 30, 2013 20:25

	def initialize
	@root_dir = File.expand_path(File.dirname(__FILE__) + '/../')
	@options = Trollop::options do

	opt :asdf,
	:type => String,
	:default => "#{@root_dir}/qwer"
	end

velppa / nt.pls

Last active December 19, 2015 02:38

You can't use Nested Table declared in anonymous PL/SQL block in SQL context.

	declare
	TYPE row_nt IS TABLE OF number;
	a row_nt;

	cursor a_cur is
	select level from dual connect by level <= 100;

	n number;

	begin