Total: 22
.NET Framework
Test
2021
Project Request
ASP.NET MVC • C# • SQL Server
Idea of the project: if someone wants to order a project development, here you can send an application.
Test
2020
ProjectC
ASP.NET MVC • C# • JSON • jQuery
JSON data processing.
Test
2020
Vehicle Maintenance
ASP.NET MVC • VB.NET • JSON
Idea of the project: if someone wants to order a project development, here you can send an application.
Test
2019
Movie Navigator
ASP.NET MVC • VB.NET
Request information about movie from IMDB.
Test
2018
Customers Exchange
ASP.NET MVC • C# • SQL Server
Automated teller machine emulation.
Test
2016
ATM
ASP.NET MVC • C#
Automated teller machine emulation.
.NET Core
Pet project
2022
Mail Daemon
.NET 9 • Console • JSON
Utility to send mails with customizable settings.
Custom
Code
2024
Buns of code
.NET Framework • C# • JavaScript
Code snippets from my projects, ready to use; tiny tests; code examples.
PHP
Test
2024
Mediabox
PHP 8 • Laravel 11 • Vue.js • Composer • SQLite
Test project for media files management.
Test
2020
Loan Castle
PHP • MariaDB
Jums jāizstrādā kāda lielāk projekta prototips. Izstrādājot prototipu, paturiet prātā, ka projektam attīstoties, šo prototipu varētu vajadzēt pilnveidot.
Test
2020
Content Management
PHP • MySQL • AJAX
Создать простой сайт, где будет страница с формой для авторизации и страница для авторизованного пользователя.
Test
2019
Laravel
PHP • Laravel • Vue.js • Composer • SQLite
Izveidot aplikāciju, kura ik pēc noteikta intervāla (60 sekundes) veic ierakstu datubāzē izmantojot Laravel freimworka iebūvēto funkcionalitāti.
Test
2019
Phone Check
PHP • JavaScript • JSON • Docker
Implement application to detect country by phone number.
Frontend
Test
2021
Forex Wall
npm • React
For this exercise, what we need is a simple live wall for tracking currencies.
Business projects
Commercial
2008
Certification Center
.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • SQL Server • ADO.NET • Dapper • JavaScript • jQuery • Git
Transport registration and certification services in Latvia, Customer Relationship Management.
Commercial
2000
Amerikas Auto
.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • SQL Server • ADO.NET • Entity Framework • JavaScript • jQuery • Git
Car service and spare parts for all USA and European car models, Customer Relationship Management.
Pet projects
Pet project
2023
Geolocation Assistant
.NET 8 • ASP.NET Core • C# • Web API • JSON • Git
Website for determining geolocation by IP or geotagged photo.
Pet project
2008
Web Dynamics
.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • Web API • JSON • SQL Server • Dapper • JavaScript • jQuery • SVG • Git
Software development blog. Articles, books, videos, content management.
Pet project
2000
Blackball
.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • Web API • JSON • XML • SQL Server • Dapper • JavaScript • jQuery • SVG • Git
My entertainment portal created from scratch.
Good old times
Legacy
2000
DOS Clock
Turbo Pascal • Assembler
Digital clock.
Legacy
2000
BrainOut
Turbo Pascal • Assembler
Tank battle game.
Legacy
1999
Airport Administrator
Turbo Pascal
Курсовая работа в институте.
Legacy
1998
Atomizer
Turbo Pascal • Assembler
Atomizer, aka «Studio2D». Graphic raster editor. AGI is my own «Atomizer Generated Image» file format.
Laravel
2019 TestIzveidot aplikāciju, kura ik pēc noteikta intervāla (60 sekundes) veic ierakstu datubāzē izmantojot Laravel freimworka iebūvēto funkcionalitāti.
PHP
Laravel
Vue.js
Composer
SQLite
Source code
PHP Option Type [](http://travis-ci.org/schmittjoh/php-option) [](https://scrutinizer-ci.com/g/schmittjoh/php-option/)
===============
This adds an Option type for PHP.
The Option type is intended for cases where you sometimes might return a value
(typically an object), and sometimes you might return no value (typically null)
depending on arguments, or other runtime factors.
Often times, you forget to handle the case where no value is returned. Not intentionally
of course, but maybe you did not account for all possible states of the system; or maybe you
indeed covered all cases, then time goes on, code is refactored, some of these your checks
might become invalid, or incomplete. Suddenly, without noticing, the no value case is not
handled anymore. As a result, you might sometimes get fatal PHP errors telling you that
you called a method on a non-object; users might see blank pages, or worse.
On one hand, the Option type forces a developer to consciously think about both cases
(returning a value, or returning no value). That in itself will already make your code more
robust. On the other hand, the Option type also allows the API developer to provide
more concise API methods, and empowers the API user in how he consumes these methods.
Installation
============
Installation is super-easy via composer
```
composer require phpoption/phpoption
```
or add it to your composer.json file.
Usage
=====
Using the Option Type in your API
---------------------------------
```php
class MyRepository
{
public function findSomeEntity($criteria)
{
if (null !== $entity = $this->em->find(...)) {
return new \PhpOption\Some($entity);
}
// We use a singleton, for the None case.
return \PhpOption\None::create();
}
}
```
If you are consuming an existing library, you can also use a shorter version
which by default treats ``null`` as ``None``, and everything else as ``Some`` case:
```php
class MyRepository
{
public function findSomeEntity($criteria)
{
return \PhpOption\Option::fromValue($this->em->find(...));
// or, if you want to change the none value to false for example:
return \PhpOption\Option::fromValue($this->em->find(...), false);
}
}
```
Case 1: You always Require an Entity in Calling Code
----------------------------------------------------
```php
$entity = $repo->findSomeEntity(...)->get(); // returns entity, or throws exception
```
Case 2: Fallback to Default Value If Not Available
--------------------------------------------------
```php
$entity = $repo->findSomeEntity(...)->getOrElse(new Entity());
// Or, if you want to lazily create the entity.
$entity = $repo->findSomeEntity(...)->getOrCall(function() {
return new Entity();
});
```
More Examples
=============
No More Boiler Plate Code
-------------------------
```php
// Before
if (null === $entity = $this->findSomeEntity()) {
throw new NotFoundException();
}
echo $entity->name;
// After
echo $this->findSomeEntity()->get()->name;
```
No More Control Flow Exceptions
-------------------------------
```php
// Before
try {
$entity = $this->findSomeEntity();
} catch (NotFoundException $ex) {
$entity = new Entity();
}
// After
$entity = $this->findSomeEntity()->getOrElse(new Entity());
```
More Concise Null Handling
--------------------------
```php
// Before
$entity = $this->findSomeEntity();
if (null === $entity) {
return new Entity();
}
return $entity;
// After
return $this->findSomeEntity()->getOrElse(new Entity());
```
Trying Multiple Alternative Options
-----------------------------------
If you'd like to try multiple alternatives, the ``orElse`` method allows you to
do this very elegantly:
```php
return $this->findSomeEntity()
->orElse($this->findSomeOtherEntity())
->orElse($this->createEntity());
```
The first option which is non-empty will be returned. This is especially useful
with lazy-evaluated options, see below.
Lazy-Evaluated Options
----------------------
The above example has the flaw that we would need to evaluate all options when
the method is called which creates unnecessary overhead if the first option is
already non-empty.
Fortunately, we can easily solve this by using the ``LazyOption`` class:
```php
return $this->findSomeEntity()
->orElse(new LazyOption(array($this, 'findSomeOtherEntity')))
->orElse(new LazyOption(array($this, 'createEntity')));
```
This way, only the options that are necessary will actually be evaluated.
Performance Considerations
==========================
Of course, performance is important. Attached is a performance benchmark which
you can run on a machine of your choosing.
The overhead incurred by the Option type comes down to the time that it takes to
create one object, our wrapper. Also, we need to perform one additional method call
to retrieve the value from the wrapper.
* Overhead: Creation of 1 Object, and 1 Method Call
* Average Overhead per Invocation (some case/value returned): 0.000000761s (that is 761 nano seconds)
* Average Overhead per Invocation (none case/null returned): 0.000000368s (that is 368 nano seconds)
The benchmark was run under Ubuntu precise with PHP 5.4.6. As you can see the
overhead is surprisingly low, almost negligible.
So in conclusion, unless you plan to call a method thousands of times during a
request, there is no reason to stick to the ``object|null`` return value; better give
your code some options!