Exchange rates–start project – part 1

(This is the result of 1 hour per day auto-challenge as a full cycle developer)

Long time ago I have made a site about exchange currency rates for National Bank of Romania( and l, later, also Central Europeean Bank ) . It was started on ~ 2004  – found image at https://web.archive.org/web/20041215090302/http://www.infovalutar.ro/

Then was passed via MVC1 – and it looks like in https://web.archive.org/web/20180227023708/http://www.infovalutar.ro/bnr

Now it is the moment to pass to .NET Core and Azure.

Here are some requirements:

  1. Must parse at specified times the exchange currencies from multiple banks
  2. Must show the exchange rates
  3. Must have a Web application, a Console one , a Mobile one
  4. Must be easy accessible to programmers – if they want to have the exchange rates ( rss, custom links)
  5. Must have a download link for all values
  6. Must have charts
  7. Must be easy to use – whatever that means

 

I will work at the applications 1 hour per day – and see what it is happening over the time.

Infovalutar

And one hour passes...
(This is the result of 1 hour per day auto-challenge as a full cycle developer for an exchange rates application)
( You can see the sources at https://github.com/ignatandrei/InfoValutar/ )
NrPost 
1Start
2Reading NBR from internet
3Source control and build
4Badge and test
5CI and action
6Artifacts and dotnet try
7Docker with .NET Try
8ECB
9Intermezzo - Various implementations for programmers
10Intermezzo - similar code - options
11Plugin implementation
12GUI for console
13WebAPI
14Plugin in .NET Core 3
15Build and Versioning
16Add swagger
17Docker - first part
18Docker - second part
19Docker - build Azure
20Pipeline send to Docker Hub
21Play with Docker - online
22Run VSCode and Docker
23Deploy Azure
24VSCode see tests and powershell
25Code Coverage
26Database in Azure
27Sql In Memory or Azure
28Azure ConString, RSS
29Middleware for backward compatibility
30Identical Tables in EFCore
31Multiple Data in EFCore
32Dot net try again
33Start Azure Function
34Azure function - deploy
35Solving my problems
36IAsyncEnumerable transformed to IEnumerable and making Azure Functions works
37Azure functions - final
38Review of 37 hours
39Last Commit in AzureDevOps
40Create Angular WebSite
41Add static Angular to WebAPI .NET Core
42Docker for Angular
43Angular and CORS
44SSL , VSCode, Docker
45Routing in Angular
46RxJS for Routing
47RxJs Unsubscribe

Angular Pipe to match and select words in a text

I needed two times the same pipe to match and select words in a text .

I maybe put later in a npm package, but until then , here it is

import { PipeTransform, Pipe } from '@angular/core';

@Pipe({ name: 'highlight' })
export class HighlightPipe implements PipeTransform {
  transform(text: string, search): string {
     // window.alert(text );
     //console.log(search );
    if (search && text) {
      let pattern = search.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
      pattern = pattern.split(' ').filter((t) => {
        return t.length > 0;
      }).join('|');
      const regex = new RegExp(pattern, 'gi');

      return text.replace(regex, (match) => `<b><i><strong>${match}</strong></i></b>`);
    } else {
      return text;
    }
  }
}

 

You can use by performing 3 steps:

  1.  Creating a highPipe.ts and copying the code above
  2. In File : app.module.ts , at @NgModule, ad declarations  add  HighlightPipe ( also,
    import {HighlightPipe} from ‘./highPipe’; )
  3. <span [innerHTML]=”name  | highlight: selectedText”></span>

Things to improve:

1. The regex should be a parameter ( with the default value seen below)

2. How to select the word should be a parameter also ( here is <b><i> )

 

Friday Links 342

  • aspnet/WebHooks: Libraries to create and consume web hooks on ASP.NET Core
  • gallery.htmlwidgets.org
  • Scalable and Performant ASP.NET Core Web APIs: Load Testing | Carl’s Blog
  • 8 Things to Monitor During a Software Deployment
  • Uber simple uber app written using loads of stuffz – CodeProject
  • On Productive Software Development Teams | The Shade Tree Developer
  • Top REST API Best Practices – CodeProject
  • Top 10 JavaScript errors from 1000+ projects (and how to avoid them)
  • R Programming Tutorial – Map, Reduce, Filter and Lambda Examples | Technology of Computing
  • A Few Great Ways to Consume RESTful API in C# – CodeProject
  • stephlocke/datasauRus: The Datasaurus Dozen datasets
  • Dynamic Tracing of .NET Core Methods | All Your Base Are Belong To Us
  • Top 10 tips for Microsoft style and voice – Microsoft Style Guide | Microsoft Docs
  • Swizz/trdis: The most known way to travel in space and time
  • jagt/clumsy: clumsy makes your network condition on Windows significantly worse, but in a controlled and interactive manner.

    • Presentation .NET Core3 Wha’s New

    From the presentation:

    C# 8.0 What’s new

    Reference:

    https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-8 https://github.com/dotnet/csharplang/blob/master/meetings/2017/LDM-2017-03-08.md

    Demos:

    1. Default Interface Inheritance

    2. Multiple Interface Inheritance
    3. Switch
    4. Deconstruct

    Other demos:

    1. UsingUsage

    2. StaticLocalFunctions();
    3. Nullable();
    4. Version();
    5. Indexes();
    6. NullCoalescing();

    .NET Core What’s new

    Reference:

    https://docs.microsoft.com/en-us/dotnet/core/whats-new/dotnet-core-3-0

    https://devblogs.microsoft.com/dotnet/announcing-net-core-3-0/

    Demos:

    1. AsyncEnumerable

    2. WPF
    3. COM
    4. Build ( trim, single file)
    5. Diamond hell with plugins

    See NetCore3WhatsNew.sln and AssemblyLoadingUnloadingDiamond.sln

    ASP.NET Core What’s new

    Reference:

    https://docs.microsoft.com/en-us/aspnet/core/release-notes/aspnetcore-3.0?view=aspnetcore-3.0

    1. Blazor + Blazor Server

    2. gRPC – https://docs.microsoft.com/en-us/aspnet/core/grpc/index?view=aspnetcore-3.0
    3. SignalR – reconnection, authorization

    4. NewtonSoft => System.Text.JSON
    5. Windows Authentication has been extended onto Linux and macOS.
    6. GenericHost – see https://docs.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-3.0&tabs=visual-studio#hostbuilder-replaces-webhostbuilder
    7. As of ASP.NET Core 3.0, .NET Framework is no longer a supported target framework

    EF Core What’s new

    Reference: https://devblogs.microsoft.com/dotnet/announcing-ef-core-3-0-and-ef-6-3-general-availability/

    1. Refactoring + Single SQL statement per LINQ query

    2. Restricted client evaluation – i.e. Explicit AsEnumerable
    3. C# 8.0 support – AsAsyncEnumerable
    4. IDbCommandInterceptor

    See NetCore3WhatsNew.sln , AsyncEnumerable

    See https://github.com/ignatandrei/EFRecordAndPlay/tree/master/EF_Core3/EFCoreRecordAndPlay/EFRec

    The video whole presentation ( in Romanian) you can find  at https://www.youtube.com/watch?v=GjJGMwkSnao&feature=youtu.be&fbclid=IwAR1i33TSycffNQ8O-iDjf2l_yU9IL1g2ylRPqiG7OkOZo5RRdy0CxklnbTk 

    The demo is at https://github.com/ignatandrei/Presentations/tree/master/2019/shorts/NetCore3.0WhatsNew

    Friday Links 341

  • My Microservices FAQ
  • Analyse #trend Twitter Data With rtweet Package from R – data science ni bai’
  • clauswilke/dataviz: A book covering the fundamentals of data visualization.
  • Fundamentals of Data Visualization
  • Some datasets for teaching data science · Simply Statistics
  • Cartographic Explorations of the OpenStreetMap Database with R | R Géomatique
  • riatelab/cartography: Thematic Cartography
  • Dockerized Shiny App development
  • Distributing Content and Showing a ReadMe file in a .NET Core Nuget Package – Rick Strahl’s Web Log
  • Easy way to create a C# lambda expression from a string (with Roslyn) | StrathWeb. A free flowing web tech monologue.
  • Eric Williams – Azure Functions Proxies
  • rdegges/ipify-api: A public IP API service.
  • NASA finds satellite, realises it has lost the software and kit that talk to it • The Register
  • TypedRouting for ASP.NET Core MVC 2 | StrathWeb. A free flowing web tech monologue.
  • Wikipedia Alternatives: 47 Websites You Can Use Instead

    • Learning PowerBI

    Just for my memory, this is how I started learning PowerBI:

     
    1. Download PowerBI Desktop https://powerbi.microsoft.com/en-us/desktop/

    2.    Make sure you have the QuickStart https://docs.microsoft.com/en-us/power-bi/desktop-quickstart-connect-to-data

    3.    Read the tutorials /samples from https://docs.microsoft.com/en-us/power-bi/desktop-what-is-desktop

    4.    Goto https://appsource.microsoft.com/en-us/marketplace/apps?page=1&src=office&product=power-bi-visuals  and be sure that you see RUN in PowerBI Desktop all visuals created by Microsoft ( each visual has a downloadable DEMO file that can be opened in PBI Desktop)

    5.    Goto https://appsource.microsoft.com/en-us/marketplace/apps?page=1&src=office&product=power-bi-visuals and  find some visuals that seems nice ( https://appsource.microsoft.com/en-us/product/power-bi-visuals/WA104381112?src=office )

    That will be all  – and that means at least 1 week of hard working….

    Friday Links 340

  • rdvojmoc/DinkToPdf: C# .NET Core wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF.
  • krasimir/evala: Clock, Weather, Terminal … 520;0 :)
  • xtermjs/xterm.js: Full xterm terminal, in your browser
  • | Font Awesome
  • Top REST API Best Practices – CodeProject
  • Mapping The Global Metal Scene Using Leaflet and R
  • DataExplorer: Fast Data Exploration With Minimum Code (Revolutions)
  • boxuancui/DataExplorer: R package to simplify Exploratory Data Analysis
  • How to Implement Content Negotiation in ASP.NET Core 2.0 – CodeProject
  • Docs/aspnetcore/mvc/advanced at master · aspnet/Docs
  • List of the Best Free Visual Studio Extensions | elmah.io
  • mariuszkerl/AspNetCoreSubdomain: Simple usage lib for subdomain routing in ASP.NET Core MVC
  • A to-do list for new ASP.NET Core projects · Biarity
  • PwdLess/Cierge:  Passwordless OIDC authentication done right
  • json2ts – generate TypeScript interfaces from json

    • What’s new in .NET Core 3

    If you want to see what is new in .NET Core 3, please join tomorrow at https://www.meetup.com/Bucharest-A-D-C-E-S-Meetup/events/264063550/ .

    We will have talk about

    C# 8.0 What’s new

    Reference:

    https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-8

    Demos:

    1. Default Interface Inheritance

    2. Multiple Interface Inheritance
    3. Switch
    4. Deconstruct

    Other demos:

    1. UsingUsage

    2. StaticLocalFunctions();
    3. Nullable();
    4. Version();
    5. Indexes();
    6. NullCoalescing();

    See NetCore3WhatsNew.sln

    .NET Core What’s new

    Reference:

    https://docs.microsoft.com/en-us/dotnet/core/whats-new/dotnet-core-3-0

    https://devblogs.microsoft.com/dotnet/announcing-net-core-3-0/

    Demos:

    1. AsyncEnumerable

    2. WPF
    3. COM
    4. Build ( trim, single file)
    5. Diamond hell with plugins

    See NetCore3WhatsNew.sln and AssemblyLoadingUnloadingDiamond.sln

    ASP.NET Core What’s new

    Reference:

    https://docs.microsoft.com/en-us/aspnet/core/release-notes/aspnetcore-3.0?view=aspnetcore-3.0

    1. Blazor + Blazor Server

    2. gRPC – https://docs.microsoft.com/en-us/aspnet/core/grpc/index?view=aspnetcore-3.0
    3. SignalR – reconnection, authorization

    4. NewtonSoft => System.Text.JSON
    5. Windows Authentication has been extended onto Linux and macOS.
    6. GenericHost – see https://docs.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-3.0&tabs=visual-studio#hostbuilder-replaces-webhostbuilder
    7. As of ASP.NET Core 3.0, .NET Framework is no longer a supported target framework

    EF Core What’s new

    Reference: https://devblogs.microsoft.com/dotnet/announcing-ef-core-3-0-and-ef-6-3-general-availability/

    1. Refactoring + Single SQL statement per LINQ query

    2. Restricted client evaluation – i.e. Explicit AsEnumerable
    3. C# 8.0 support – AsAsyncEnumerable
    4. IDbCommandInterceptor

    See NetCore3WhatsNew.sln , AsyncEnumerable

    So I wait tomorrow at https://www.meetup.com/Bucharest-A-D-C-E-S-Meetup/events/264063550/ .

    Friday Links 339

  • metmuseum/openaccess: The Metropolitan Museum of Art’s Open Access Initiative
  • PDClipart.org – Public Domain Clip Art
  • An Overview of JavaScript Testing in 2018 – welldone-software – Medium
  • Mapping The Global Metal Scene Using Leaflet and R
  • Top 15 Underutilized Features of .NET – CodeProject
  • Design Patterns Archives – Page 2 of 3 – Automate The Planet
  • Diagram your Database Tables using Power BI | RADACAD
  • Software Project Development and Decision Making – CodeProject
  • My Favorite Websites
  • Creating Dynamic Object from XML using ExpandoObject and Put Intellisense using C# – CodeProject
  • ImageOptim/gifski: GIF encoder based on libimagequant (pngquant, gifquant?). Squeezes maximum possible quality from the awful GIF format.
  • Placeholder image generator
  • PDF Generation in Azure Functions V2

    • .NET Core 3 – what impressed me

    This are the things that have impressed me:

    • Async Streams ( think in conjunction with about EFCore / SignalR / gRPC / Observables)
    •  .NET Default Interface members ( not appliable to classes  – so multiple inheritance is a problem just for interfaces…)
    • Deconstruct – see a class from his properties
    • Switch  – they improved Switch to work practically in any case scenario
    • For Windows Application –  COM support, MSIX
    • For any application – Default Files Executable ( about time!), assembly linking( tree-shaking in Javascript idiom) , single files executables ( like a jar file, but executable)
    • For plugins: Assembly loading improvements and Assembly Unloadability
    • gRPC in ASP.NET Core
    • SignalR improvements
    • Windows Authentication has been extended onto Linux and macOS
    • As of ASP.NET Core 3.0, .NET Framework is no longer a supported target framework.
    • EFCore : Restricted client evaluation – Explicit loading data from database
    • EFCore: Async in loading data
    • EFCore : IDBCommandInterceptor for

    But there are more improvements( nullable for classes , using syntax, static local functions…)

    Be sure that you read the links:

    Andrei Ignat weekly software news(mostly .NET)

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