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@vkhorikov
vkhorikov / CustomerController.cs
Last active July 27, 2025 13:40
Handling failures and input errors in a functional way
[HttpPost]
public HttpResponseMessage CreateCustomer(string name, string billingInfo)
{
Result<BillingInfo> billingInfoResult = BillingInfo.Create(billingInfo);
Result<CustomerName> customerNameResult = CustomerName.Create(name);
return Result.Combine(billingInfoResult, customerNameResult)
.OnSuccess(() => _paymentGateway.ChargeCommission(billingInfoResult.Value))
.OnSuccess(() => new Customer(customerNameResult.Value))
.OnSuccess(
@Kartones
Kartones / postgres-cheatsheet.md
Last active December 26, 2025 10:06
PostgreSQL command line cheatsheet

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
@mrchief
mrchief / Deploy-Windows-Service-Via-MSBuild.proj.xml
Last active June 26, 2024 09:37
MSBuild Script to deploy Windows Service to remote or local machine
<Project DefaultTargets="CopyOutputs;DeployService" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
<!-- These settings control what the service's name, description etc appear in services.msc task panel. -->
<PropertyGroup Label="ServiceMetaData">
<ServiceName>ShinyNewService</ServiceName>
<ServiceDisplayName>Shiny New Service</ServiceDisplayName>
<ServiceDescription>A shiny new service, that changes the world for the greater good.</ServiceDescription>
</PropertyGroup>
<Choose>
@jarmo
jarmo / tumblr-recent-posts.js
Created November 11, 2012 22:48
Tumblr Recent Posts Widget
/*
This widget shows Recent Posts on your Tumblr blog.
Its dependency is jQuery.
Usage:
1) Add html:
<div id="recent-posts"></div>
2) Add code into the <head>:
@paulruescher
paulruescher / Extend Recent Posts
Created June 26, 2012 19:02
Used this to change the output of WordPress' Recent Posts Widget
/**
* Extend Recent Posts Widget
*
* Adds different formatting to the default WordPress Recent Posts Widget
*/
Class My_Recent_Posts_Widget extends WP_Widget_Recent_Posts {
function widget($args, $instance) {
@zircote
zircote / ssh.sh
Created September 26, 2011 21:45
Convert a AWS PEM into a ssh pub key
ssh-keygen -y -f private_key1.pem > public_key1.pub