Hudson  Larkin

Hudson Larkin

1600188240

C++ List Example | List in C++ Standard Template Library

C++ List is the inbuilt sequence containers that allow non-contiguous memory allocation. The list doesn’t provide fast random access, and it only supports sequential access in both directions. The list is a sequence container available with STL(Standard Template Library) in C++. By default, the list is a doubly-linked list. Since it is a doubly-linked list, the insertion and deletion are fast on the list.

It uses non-contiguous memory allocation, so traversal is slow compared to  vector in C++.

C++ List Example

The list allows insertion and deletion operation anywhere within a sequence in constant time.

Elements of the list can be scattered in the different chunks of memory. Container stores the necessary information to allow sequential access to its data.

C++ Lists can shrink or expand as needed from both ends at run time. The storage requirement is fulfilled automatically by the internal allocator.

Zero-sized lists are also valid. In that case list.begin() and list.end() points to the same location. But the behavior of calling front() or back() is undefined.

#c++ #c++ list

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Buddha Community

C++ List Example | List in C++ Standard Template Library
Hudson  Larkin

Hudson Larkin

1600188240

C++ List Example | List in C++ Standard Template Library

C++ List is the inbuilt sequence containers that allow non-contiguous memory allocation. The list doesn’t provide fast random access, and it only supports sequential access in both directions. The list is a sequence container available with STL(Standard Template Library) in C++. By default, the list is a doubly-linked list. Since it is a doubly-linked list, the insertion and deletion are fast on the list.

It uses non-contiguous memory allocation, so traversal is slow compared to  vector in C++.

C++ List Example

The list allows insertion and deletion operation anywhere within a sequence in constant time.

Elements of the list can be scattered in the different chunks of memory. Container stores the necessary information to allow sequential access to its data.

C++ Lists can shrink or expand as needed from both ends at run time. The storage requirement is fulfilled automatically by the internal allocator.

Zero-sized lists are also valid. In that case list.begin() and list.end() points to the same location. But the behavior of calling front() or back() is undefined.

#c++ #c++ list

Ari  Bogisich

Ari Bogisich

1593006480

Standard Template Library (STL) in C++ | Lists

The **Standard Template Library (STL) **is a very useful set of template classes containing various containers. One among these containers is Lists. Today we’ll be having a look at Lists in STL. But before we proceed further I’d like to say that if this is your first time learning STL then I’d recommend you have a look at this article before beginning with this one.

With that being said let’s dive further into the topic by knowing what are lists in STL ?

A. Lists in STL

Lists are a type of sequence containers which provides us with constant insertion and deletion time anywhere within the sequence given that we have obtained the corresponding iterator to the same. It also allows us traversal in both the directions.

List containers are implemented as doubly-linked lists. The memory management is done internally by maintaining a link to the previous as well as the next element in the sequence with respect to each element. A significant drawback of lists being that we don’t have direct access to the elements since it uses non contiguous memory allocation for each element in the sequence. Thus in order to get to a specific element in the sequence one has to iterate through the list which takes linear time. Apart from that it also takes up a bit more extra space when compared to vectors, which it uses to keep track of the links to previous and next elements corresponding to each element in the sequence.

#standard-template-library #lists-in-cplusplus #stl #cplusplus #programming-c

Generics type example in C# | Generic Class | Generic Method | C# Tutorial | Advanced C#

https://youtu.be/xfDjyg9jKSk

#oop in c# #object oriented programming in c# #object oriented concept in c# #learn oop concept #advance c# #generics type example in c#

Shaylee  Lemke

Shaylee Lemke

1590240840

The numerical algorithms that are found in the Standard Template Library (STL)

In this article I will discuss the numerical algorithms that are found in the Standard Template Library (STL). These algorithms do not replace the math library for the types of functions found in cmath but provide a different set of algorithms for solving certain numerical processing problems.

#c #c# #c++ #programming-c

HI Python

HI Python

1640973720

Beyonic API Python Example Using Flask, Django, FastAPI

Beyonic API Python Examples.

The beyonic APIs Docs Reference: https://apidocs.beyonic.com/

Discuss Beyonic API on slack

The Beyonic API is a representational state transfer, REST based application programming interface that lets you extend the Beyonic dashboard features into your application and systems, allowing you to build amazing payment experiences.

With the Beyonic API you can:

  • Receive and send money and prepaid airtime.
  • List currencies and networks supported by the Beyonic API.
  • Check whether a bank is supported by the Beyonic API.
  • View your account transactions history.
  • Add, retrieve, list, and update contacts to your Beyonic account.
  • Use webhooks to send notifications to URLs on your server that when specific events occur in your Beyonic account (e.g. payments).

Getting Help

For usage, general questions, and discussions the best place to go to is Beyhive Slack Community, also feel free to clone and edit this repository to meet your project, application or system requirements.

To start using the Beyonic Python API, you need to start by downloading the Beyonic API official Python client library and setting your secret key.

Install the Beyonic API Python Official client library

>>> pip install beyonic

Setting your secrete key.

To set the secrete key install the python-dotenv modeule, Python-dotenv is a Python module that allows you to specify environment variables in traditional UNIX-like “.env” (dot-env) file within your Python project directory, it helps us work with SECRETS and KEYS without exposing them to the outside world, and keep them safe during development too.

Installing python-dotenv modeule

>>> pip install python-dotenv

Creating a .env file to keep our secrete keys.

>>> touch .env

Inside your .env file specify the Beyonic API Token .

.env file

BEYONIC_ACCESS_KEY = "enter your API "

You will get your API Token by clicking your user name on the bottom left of the left sidebar menu in the Beyonic web portal and selecting ‘Manage my account’ from the dropdown menu. The API Token is shown at the very bottom of the page.

getExamples.py

import os 
import beyonic
from dotenv import load_dotenv 

load_dotenv()

myapi = os.environ['BEYONIC_ACCESS_KEY']

beyonic.api_key = myapi 

# Listing account: Working. 
accounts = beyonic.Account.list() 
print(accounts)


#Listing currencies: Not working yet.
'''
supported_currencies = beyonic.Currency.list()
print(supported_currencies)

Supported currencies are: USD, UGX, KES, BXC, GHS, TZS, RWF, ZMW, MWK, BIF, EUR, XAF, GNF, XOF, XOF
'''

#Listing networks: Not working yet.
"""
networks = beyonic.Network.list()
print(networks)
"""

#Listing transactions: Working. 
transactions = beyonic.Transaction.list()
print(transactions) 

#Listing contact: Working. 
mycontacts = beyonic.Contact.list() 
print(mycontacts) 


#Listing events: Not working yet.
'''
events = beyonic.Event.list()
print(events)

Error: AttributeError: module 'beyonic' has no attribute 'Event'
'''

Docker file

FROM python:3.8-slim-buster

COPY . .

COPY ./requirements.txt ./requirements.txt

WORKDIR .

RUN pip install -r requirements.txt

CMD [ "python3", "getExamples.py" ]

Build docker image called demo

>>> docker build -t bey .

Run docker image called demo

>>>docker run -t -i bey 

Now, I’ll create a Docker compose file to run a Docker container using the Docker image we just created.


version: "3.6"
services:
  app:
    build: .
    command: python getExamples.py
    volumes:
      - .:/pythonBeyonicExamples

Now we are going to run the following command from the same directory where the docker-compose.yml file is located. The docker compose up command will start and run the entire app.


docker compose up

Output

NB: The screenshot below might differ according to your account deatils and your transcations in deatils.

docker compose up preview

To stop the container running on daemon mode use the below command.

docker compose stop

Output

docker compose preview

Contributing to this repository. All contributions, bug reports, bug fixes, enhancements, and ideas are welcome, You can get in touch with me on twitter @HarunMbaabu.

Download Details:
Author: HarunMbaabu
Source Code: https://github.com/HarunMbaabu/BeyonicAPI-Python-Examples
License: 

#api #python #flask #django #fastapi