dinhhuydh

{-| Suppose that you have many inputs for list of users (first_name, last_name)
To handle event onInput for inputs for each elements, it needs to bind Event.onInput for 
inputs but Event.onInput support pass one string value. To customize that it's able to 
include more information, for example user id, we can declare the Message as below:
-}

type Msg 
    = UpdateFirstName Int String
    
-- View    

dinhhuydh

# Resolve errors: Name is not specified
connection = Faraday.new(url: @@base_url)
connection.post do |req|
  req.url 'crm.product.add'
  req.headers['Content-Type'] = 'application/json'
  req.body = { fields: { NAME: product_name, PRICE: estate.gia_khoi_diem, DESCRIPTION: product_description } }.to_json
end

dinhhuydh

# Explain Ecto Query
Repo.explain(:all, Analytics.Queries.conversations_created_between(1, start_date, end_date))

# Disable spam log when playing `iex -S mix`. Set config in config/dev.secret.exs
config :logger,
  level: String.to_atom(System.get_env("LOG_LEVEL", "debug")),
  console: [format: "[$level] $message\n"]
# Then run the command
LOG_LEVEL=warning iex -S mix

dinhhuydh

# Install dependency
sudo apt install libgeos-3.6.2 libgeos-dev libgeos++-dev libproj-dev libproj12

# Make link to dependency
sudo find / -name 'libgeos*'

sudo ln -s /usr/lib/x86_64-linux-gnu/libgeos-3.6.2.so /usr/lib/libgeos.so
sudo ln -s /usr/lib/x86_64-linux-gnu/libgeos-3.6.2.so /usr/lib/libgeos.so.1
  
# Clear cache

dinhhuydh

module RuboCop
  module Cop
    module Migration
      class AddIndexName < RuboCop::Cop::Cop
        # Postgres and MySQL have different naming conventions, so if we need to remove them we cannot predict accurately what the constraint name would be.
        MSG = 'Please explicitly name your index or constraint.'.freeze
        CONSTRAINT_METHODS = %i{
          add_unique_constraint add_constraint add_foreign_key add_index add_primary_key add_full_text_index add_spatial_index
          unique_constraint constraint foreign_key index primary_key full_text_index spatial_index
        }.freeze

dinhhuydh

## require in .rubocop.yml
require
- ./linters/migration/add_index_name.rb

## config in .hound.yml
ruby: 
  config_file: .rubocop.yml

dinhhuydh

# added to .git-hooks/pre_commit/debugger.rb
module Overcommit::Hook::PreCommit
  # Check for Debugger
  class Debugger < Base
    def run
      keywords = config['keywords']
      result = execute(command, args: [keywords.join('|')] + applicable_files)

      unless result.stdout.empty?
        extract_messages(

dinhhuydh

Principle

• It does not predict a price up or down
• It only notify when there is a rise on a coin. Price change is > 1.5% and volume change > 2%
• It gets data on Poloniex page
• The bot fetch data every 3 minutes

Examples

Ripple 1.0559% rises vs previous price. Volume: 22.6 btc. 24h Volume: 61960.10461694 btc. Rise streak: 1. Rise percentage (recent 100): 50.5%. Trend: 1.05% -0.73% -0.83% -0.13% -1.88% -1.23% 1.25% 0.63% -1.76% -1.5% . Watch & buy?

• Rise 1.0559% to previous price in btc
• Volume: 22.6 btc (estimated, maybe incorrect because Poloniex does not supply)
• 24h Volume

dinhhuydh

# 1 Print square of number from 1 to n
# eg1: squares(3) => [1, 4, 9]

# 2: Print all numbers with 3 digits have two '1' digits like 112, 131

# 3. Calculate sum of digits in the numbers
# eg1: [12, 4, 154] => [3, 4, 10]

# 4. Transform a number to simple word of digits
# eg1: 12 => one two

dinhhuydh

# 1. count number of words in a string
# E.g 1: count_words("this is an object") ==> 4

# 2. Count how many max numbers
# eg1: [3,5,6,3,6] => 2
# eg2: [1,5,6,6,6] => 3


# 3. Find longest string
# eg 1: ['a', 'bbbbb', 'zzz'] => 'bbbb'