ferhatelmas

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called Reactive Programming, particularly its variant comprising of Rx, Bacon.js, RAC, and others.

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

ferhatelmas

# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine
# This is how I upload my new Sol Trader builds (http://soltrader.net)
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash

S3KEY="my aws key"
S3SECRET="my aws secret" # pass these in

function putS3
{
  path=$1

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WITH RECURSIVE
    x(i) AS ( VALUES (0)
              UNION ALL SELECT i + 1
                        FROM x
                        WHERE i < 101),
    Z(Ix, Iy, Cx, Cy, X, Y, I) AS (
    SELECT
      Ix,
      Iy,
      X :: FLOAT,

ferhatelmas

package main

import (
	"errors"
	"log"
	"os"

	"github.com/PuerkitoBio/goquery"
	"github.com/robertkrimen/otto"
)

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import email, getpass, imaplib, os

detach_dir = '.' # directory where to save attachments (default: current)
user = raw_input("Enter your GMail username:")
pwd = getpass.getpass("Enter your password: ")

# connecting to the gmail imap server
m = imaplib.IMAP4_SSL("imap.gmail.com")
m.login(user,pwd)
m.select("cs2043") # here you a can choose a mail box like INBOX instead

ferhatelmas

#To install ruby-debug on Ubuntu ruby-1.9.3 you need to download from http://rubyforge.org/frs/?group_id=8883

linecache19-0.5.13.gem 
ruby_core_source-0.1.5.gem 
ruby-debug19-0.11.6.gem 
ruby-debug-base19-0.11.26.gem

#Then in your console

export RVM_SRC=/your/path/to/ruby-1.9.3

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(use '[clojure.core.match :only [match]])

(defn evaluate [env [sym x y]]
  (match [sym]
    ['Number]   x
    ['Add]      (+ (evaluate env x) (evaluate env y))
    ['Multiply] (* (evaluate env x) (evaluate env y))
    ['Variable] (env x)))
    
(def environment {"a" 3, "b" 4, "c" 5})

ferhatelmas

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

ferhatelmas

-- Import CSV into table t_words
COPY t_words FROM '/path/to/file.csv' DELIMITER ',' CSV;
-- You can tell quote char with QUOTE
-- and change delimiter with DELIMITER

-- Import CSV into table t_words,
-- telling what columns to use
COPY t_words("name", "count", "def") FROM 'file.csv' DELIMITER ',' CSV; 

-- Export table to a CSV file

ferhatelmas

Python Number Conversion Chart

From	To	Expression