gxespino

Keybase proof

I hereby claim:

• I am gxespino on github.
• I am gxespino (https://keybase.io/gxespino) on keybase.
• I have a public key ASC9AsSVsPafUVpjM4OcWs7RK-yuzc7PZyarPeEWeNsmKwo

To claim this, I am signing this object:

gxespino

#include <iostream>
#include <cmath>

using namespace std;

class QuadraticCalculator {
  public:

    string numberOfSolutions();
    void printSolutions();

gxespino

Collections

ITEM: 16: Duplicate Collections Passed as Arguments Before Mutating Them

When inserting objects into collections or passing as parameters to methods, most are passed as reference, Fixnum are passed as value.

• Consider adding a ! to methods that will change the parameters.
• Consider using Array#reject instea of Array#delete_if.

class Tuner
  def initialize (presets)
    @presets = presets
 clean

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require 'pdf_forms'
require 'cliver'

input_data = {
  ssn:        '123-23-1234',
  birthday:   '02/14/1980',
  color:      'Excella Red',
  first_name: 'John Smith'
}

gxespino

Functional Ruby - Notes

• immutable (don't modify inputs)
• prefer stateless objects

Prevent access to initial state

class UserQuery
  def initialize(query)
 @query = query

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{
  "Thin Strokes" : 2,
  "Working Directory" : "\/Users\/gpespn",
  "Prompt Before Closing 2" : 0,
  "Selected Text Color" : {
    "Green Component" : 0.6352941393852234,
    "Blue Component" : 0.6980392336845398,
    "Red Component" : 0.6078431606292725
  },
  "Rows" : 25,

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Day #1

Discussed:

• Concerns/Mixins vs. Explicit classes for business logic
  • Cons for Concerns:
    • Concern will grow in responsibility and behavior
    • Concerns across repos are hard to manage
    • "floating" methods are implicit
    • Poor naming standards across teams. The behavior encompassed in a concern is not explicit. e.g. CaseStatusConcern could be improved by CaseStatusFetchable
• Pros for Concerns:

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Responder Mobile Application Features

MVP - Initial release

• Sign in/Sign up
• Claim
• Unclaim
• Reassign
• Mute conversations
• Close issue/conversation

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class CheckoutMachine
  PRODUCT_LIST = {
    123 => { product: :chips,      price: 200  },
    456 => { product: :salsa,      price: 100  },
    789 => { product: :wine,       price: 1000 },
    111 => { product: :cigarettes, price: 550  },
    000 => { product: :bonus_card, price: nil  }
  }

  def initialize

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ActiveRecord cheat sheet / EXAMPLES

INSTALL 
=======  
$ gem install activerecord
in GEMFILE: gem ‘activerecord’

REQUIRE 
=======  
require ‘active_record’