bcardiff

macro collect_alias_method(method, type)
  def {{method}}
    res = [] of {{type}}
    {{method}} do |e|
      res << e
    end
    res
  end
end

bcardiff

require 'date'

target = ARGV[1] || "."

files = %x(git grep -n 'TODO*' #{target})

lines = []
length_author = 0
length_file = 0

bcardiff

Compiling

crystal build main.cr

will change Settings declaration in main.cr from

class Settings

bcardiff

.crystal

bcardiff

This intent to show how Ruby practice can be addapted to Crystal. With a total different under the hood implementation, but keeping some of the greatest aspects.

The focus thou is not to stand on how a fsm should be modeled, or defined by a dsl, BUT how some common Ruby practices might be rethinked to take advantage of Crystal.

As an intermediate step, I sometimes like to think in a more plain type/classes design to have a nice compile time experience, but using macros in crystal to reach that from a nice dsl.

NB: There is consideration to name the examples a language way and not the language way .

bcardiff

Keybase proof

I hereby claim:

• I am bcardiff on github.
• I am bcardiff (https://keybase.io/bcardiff) on keybase.
• I have a public key whose fingerprint is A2BC 755E D6EE AC60 6C7E D13D 2BFD 635A 00D0 2045

To claim this, I am signing this object:

bcardiff

{"tables":[{"name":"Trackers","guid":"bb1c463d-b35f-4fb0-a18b-78fab5f25963","kind":"local","fields":[{"name":"Phone","guid":"abf4aca1-502c-43f6-acad-0f88c33340fc","valid_values":""}],"protocol":["query","update","insert"]}],"message_triggers":[{"name":"track","enabled":true,"message":{"from":"+1-(234)-567-8912","pieces":[{"kind":"text","text":"track","guid":"815fa0f2-cfd7-4863-94d8-92fdb1430cdd"}],"pattern":"(?i-mx:\\A\\s*track\\s*\\Z)"},"kind":"message_trigger","actions":[{"kind":"create_entity","table":"bb1c463d-b35f-4fb0-a18b-78fab5f25963","field":"abf4aca1-502c-43f6-acad-0f88c33340fc","pill":{"kind":"placeholder","guid":"phone_number"}},{"kind":"send_message","message":[{"kind":"text","guid":"you are been tracked"}],"recipient":{"kind":"placeholder","guid":"phone_number"}}]},{"name":"all","enabled":true,"message":{"from":"+1-(234)-567-8912","pieces":[{"kind":"text","text":"all","guid":"0e2be89a-85dc-4eaf-b988-38f88ff0c9aa"},{"kind":"placeholder","text":"lorem ipsum","guid":"f02701b4-d99f-446b-aa90-39291f7

bcardiff

#include "anillo.h"
#include "aed2_tests.h"

template<typename T>
string to_s(const Anillo<T>* a) {
	ostringstream os;
	os << *a;
	return os.str();
}

bcardiff

#ifndef AED2_TESTS_
#define AED2_TESTS_

#include <iostream>
#include <sstream>
using namespace std;

string mt_bool_to_s(bool b) { return b ? "true" : "false"; }
#define MT_MAKE_ERROR(lhs, rhs, line) { ostringstream os;os << "error en linea " << (line) << endl;os << "   se esperaba: " << (rhs) << endl;os << "     se obtuvo: " << (lhs);throw os.str(); }
void mt_assert(bool lhs, bool rhs, int line) { if (lhs != rhs) { MT_MAKE_ERROR(mt_bool_to_s(lhs), mt_bool_to_s(rhs), line) } }

bcardiff

INTRODUCTION TO PROGRAMMING FOR THE VISUAL ARTS WITH P5.JS

Assignment 1: Port an Image to Code