stellasia

class Product:
    """The Product object as needed by my application"""

    def __init__(self, name: str, price: float, category: str):
        self.name = name
        self.price = price
        self.category_name = category
        
    def __repr__(self):
        # string representation for debugging

stellasia

// extension from https://gist.github.com/stellasia/a0ed4331999d8bb2d53903564b0fcfa6
use std::fmt::Debug;


trait Cachable<T: Debug>: CachableKey {
  fn serialize_and_print(&self) {
    /// print serialized data for debugging
    /// this trait method has a default implementation, that can 
    /// be overwritten in trait implementations if required
    let data = self.serialize();

stellasia

// Item & CachableKey from https://gist.github.com/stellasia/a0ed4331999d8bb2d53903564b0fcfa6

trait Cachable<T>: CachableKey {
  /// T can be any type (String, HashMap or ...)
  /// It is used to tell Rust that it will be the return type of the 'serialize' method
  fn serialize(&self) -> T ;
}

// implement cache for T=String, ie the serialize method will return String
impl Cachable<String> for Item {

stellasia

use std::collections::HashMap;

trait CachableKey {
  fn get_key(&self) -> String;
}

trait CachableDataStr: CachableKey {
  /// Serialize to string
  /// Requires the trait CachableKey to be implemented on the struct
  fn serialize(&self) -> String;

stellasia

class CacheMixin:

  def get_key(self):
    raise NotImplementedError()
   
  def serialize(self):
    raise NotImplementedError()
 

class Item(CacheMixin):

stellasia

class Transaction:
  def execute_query(self, query: str):
    # run query
    pass
  
  def close(self):
    # close transaction
    pass

stellasia

"""
Method decorators
"""


def decorate(param):
    def decorated(meth):
        """Just attach an attribute to the decorated method"""
        meth._is_decorated = True
        meth._param = param

stellasia

import folium

center_point = [48.857456, 2.340145]

m = folium.Map(
    location=center_point,
    zoom_start=13
)

# Add simple point markers