Cesar Aguirre

Software engineer. Lifelong learner. Language enthusiast. Vivid reader | Check my latest course at https://bit.ly/ut201course

Colombia (not Columbia) Joined on Jul 23, 2019 https://canro91.github.io/

Work

Content, Courses & Training for .NET teams | Helping teams to write maintainable & performant code

LetsGo

Let's Go: Learn Go in 30 days

Go • 54 stars

Parsinator

Parsinator turns structured and unstructured text into a header-detail representation

C# • 7 stars

Testing101

Unit Testing Workshop for Beginners

C# • 7 stars

LetsReact

Let's React: Learn React in 30 days

JavaScript • 6 stars

C#, SQL Server, ASP.NET Core, Unit Testing, Refactoring

SQL Server performance tuning, Brazilian Portuguese (Oi, gente!)

Writing content every other week for my blog at bit.ly/imcsarag

Workshops, talks, and training. Content collaborations and other writing opportunities. Ask me about C#, language learning, or anything else. I don't have all answers, tho

51 posts published

212 comments written

13 tags followed

Pinned

Cesar Aguirre

May 4 '22

Three common LINQ mistakes and how to fix them

#csharp #tutorial #beginners #dotnet

3 min read

Cesar Aguirre

Apr 5 '21

4 common mistakes when writing your first unit tests

#csharp #tutorial #beginners #testing

4 min read

Cesar Aguirre

Feb 1 '21

A quick guide to LINQ with examples

#tutorial #csharp #beginners #dotnet

7 min read

Cesar Aguirre

Oct 26 '20

Let's React. Learn React in 30 days

#beginners #javascript #react

283

7 min read

Cesar Aguirre

Apr 16

How to Test Logging with FakeLogger

#csharp #dotnet #beginners #testing

4 min read

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Cesar Aguirre

Mar 18

Let's refactor a test: PaymentProxy

#csharp #tutorial #dotnet #unittest

3 min read

Cesar Aguirre

Mar 11

Let's refactor a test: AccountController

#csharp #tutorial #dotnet #unittest

4 min read

Cesar Aguirre

Aug 14 '23

NullReferenceException & LINQ XOrDefault methods

#beginners #tutorial #cshap #coding

5 min read

Cesar Aguirre

Jul 19 '23

What NullReferenceException is and how to avoid it

#beginners #csharp #coding #tutorial

4 min read

Cesar Aguirre

Jun 5 '23

I'm banning Get, Set, and other method and class names

#csharp #beginners #cleancode #coding

4 min read

Cesar Aguirre

Apr 3 '23

Writing tests for logging messages

#csharp #beginners #dotnet #testing

4 min read

Cesar Aguirre

Mar 6 '23

How to write good unit tests: Use simple test values

#csharp #beginners #dotnet #testing

4 min read

Cesar Aguirre

Dec 19 '22

Four lessons I learned after working with Hangfire

#csharp #dotnet #tutorial #adventofcode

3 min read

Cesar Aguirre

Dec 14 '22

How to replace BackgroundServices with a lite Hangfire

#csharp #dotnet #tutorial #adventofcode

4 min read

Cesar Aguirre

Dec 12 '22

TIL: How to replace keywords in a file name and content with Bash

#todayilearned #bash #tutorial #todayisearched

3 min read

Cesar Aguirre

Dec 7 '22

TIL: Always check for missing configuration values inside constructors

#todayilearned #csharp #dotnet

3 min read

Cesar Aguirre

Dec 1 '22

TIL: How to write tests for HttpClient using Moq

#csharp #beginners #adventofcode #dotnet

4 min read

Cesar Aguirre

Sep 12 '22

Three LINQ set methods: Intersect, Union, and Except

#csharp #beginners #tutorial #dotnet

4 min read

Cesar Aguirre

Aug 8 '22

NCache and Full-Text Searching

#tutorial #dotnet #csharp #ncache

7 min read

Cesar Aguirre

Aug 1 '22

Peeking into LINQ DistinctBy source code

#beginners #csharp #tutorial #dotnet

4 min read

Cesar Aguirre

Jul 6 '22

How to use LINQ GroupBy method?

#csharp #beginners #dotnet #tutorial

4 min read

Cesar Aguirre

Jun 1 '22

Five Common LINQ Methods in Pictures

#beginners #csharp #dotnet

4 min read

Cesar Aguirre

Apr 20 '22

Working with ASP.NET Core IDistributedCache Provider for NCache

#tutorial #dotnet #csharp #ncache

10 min read

Cesar Aguirre

Feb 7 '22

Domain Modeling Made Functional: A jump into the functional world

#beginners #csharp #books #review

3 min read

Cesar Aguirre

Jan 11 '22

The Art of Readable Code: Takeaways

#csharp #beginners #books #review

4 min read

Cesar Aguirre

Dec 6 '21

Unit Testing Best Practices: Organization & Test Data

#csharp #beginners #testing #tutorial

2 min read

Cesar Aguirre

Nov 8 '21

Don't duplicate logic in Asserts: The most common mistake on unit testing

#csharp #beginners #testing #tutorial

3 min read

Cesar Aguirre

Oct 11 '21

Five cool C# features: Before and After

#beginners #csharp #tutorial

4 min read

Cesar Aguirre

Oct 4 '21

Unit Testing Best Practices: 6 tips for better names

#beginners #csharp #testing #codequality

2 min read

Cesar Aguirre

Sep 27 '21

Simplify your unit tests with auto-mocking and TypeBuilder

#showdev #csharp #beginners #testing

5 min read

Cesar Aguirre

Aug 30 '21

How to create custom assertions in C# with MSTest

#beginners #csharp #testing #tutorial

2 min read

Cesar Aguirre

Aug 2 '21

How to write better assertions: 5 Best Practices

#csharp #testing #beginners #tutorial

3 min read

Cesar Aguirre

Jul 5 '21

How to create test data with Object Mothers

#beginners #csharp #testing

3 min read

Cesar Aguirre

Jun 7 '21

What are fakes, stubs and mocks?

#beginners #csharp #testing

3 min read

Cesar Aguirre

May 3 '21

4 naming conventions to better name your tests

#tutorial #csharp #testing #beginners

2 min read

Cesar Aguirre

Mar 17 '21

How to convert 2-digit year to 4-digit year in C#

#todayilearned #beginners #tutorial #csharp

1 min read

Cesar Aguirre

Nov 30 '20

How to Take Smart Notes. Takeaways

#books #learning #beginners #review

4 min read

Cesar Aguirre

Nov 9 '20

How to write good unit tests? Avoid these two issues

#tutorial #csharp #testing #beginners

3 min read

Cesar Aguirre

Oct 19 '20

Two free tools to format SQL queries

#showdev #sql #productivity #beginners

3 min read

Cesar Aguirre

Oct 1 '20

How to add gzip compression to ASP.NET Core API responses

#todayilearned #csharp #aspnet #dotnet

2 min read

Cesar Aguirre

Sep 7 '20

How to read configuration values in ASP.NET Core

#csharp #tutorial #beginners #dotnet

4 min read

Cesar Aguirre

Aug 31 '20

Another two C# idioms - Part 3

#tutorial #csharp #beginners #dotnet

2 min read

Cesar Aguirre

Aug 3 '20

Another two C# idioms

#csharp #tutorial #dotnet

2 min read

Cesar Aguirre

Jul 13 '20

How to add an in-memory and a Redis-powered cache layer with ASP.NET Core 3

#tutorial #beginners #csharp #dotnet

7 min read

Cesar Aguirre

Jul 6 '20

Let's Go: Learn Go in 30 days

#beginners #go

5 min read

Cesar Aguirre

Jun 15 '20

The Clean Coder: Three Takeaways

#beginners #books #review #career

2 min read

Cesar Aguirre

May 12 '20

Pragmatic Thinking and Learning: Three takeaways

#beginners #books #review #learning

3 min read

Cesar Aguirre

Mar 9 '20

The Art of Unit Testing: Four Takeaways

#beginners #books #review #testing

2 min read

Cesar Aguirre

Dec 17 '19

Tips and Tricks for Better Code Reviews

#beginners #productivity

4 min read

Cesar Aguirre

Nov 19 '19

Two CSharp idioms

#beginners #csharp #tutorial

2 min read

Cesar Aguirre

Aug 12 '19

What the Func, Action?

#csharp #dotnet #tutorial #beginners

3 min read

Writing Debut

4 Week Community Wellness Streak

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1 Week Community Wellness Streak

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16 Week Writing Streak

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8 Week Writing Streak

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