C# Puzzle: out parameters
This method usually outputs false. Can you imagine a situation where it outputs true? [code lang=”csharp” light=”true”] static bool Test(out int x, out int y) { x =…
Robert Haken
1 min read
Knowledge Base · 57 articles · since 2017
We build digital products with AI. And we write about what works.
Field notes from HAVIT — digital products, AI agents and the technology underneath. No marketing, real project examples.
Latest
March 2018
Cloud Application Development – 02 Azure App Services, WebJobs, SQL, SendGrid [MFF UK NSWI152, LS 2018]
Recording from the second lesson (27/Feb 2018) of Cloud Applications Development course (NSWI152) for MMF UK (LS 2017/2018). It is publish on our HAVIT YouTube Channel. Topics covered: Azure…
Robert Haken
Video
Azure SQL: The database ‘tempdb’ has reached its size quota. Partition or delete data, drop indexes, or consult the documentation for possible resolutions. (Microsoft SQL Server, Error: 40544)
On one of the projects I’m involved in, whatever we wanted to do with our Azure SQL DB (V12), we got this error: The database ‘tempdb’ has reached…
Robert Haken
5 min read
SQL Query Store: Compare queries in two periods (execution counts, duration)
If you work with Azure SQL or Microsoft SQL Server 2016+, one of the new features there is the Query Store. It stores useful statistics on queries executed,…
Robert Haken
3 min read
C# Puzzle: Exceptions
What is the output when you run this code? [code lang=”csharp” light=”true”] try { try { throw new Exception("A"); } catch { throw new Exception("B"); } finally {…
Robert Haken
1 min read
Quartz.NET, Castle Windsor – LifeStyle Per Job (Scoped)
If you have ever tried to use Quartz.NET (a famous job-scheduling library) with Castle Windsor (IoC/DI container) you might need to register a component whose life-style should be…
Robert Haken
2 min read
Azure: How to solve Azure SQL “database is not currently available”
Developers sometimes ask me about “database is not currently available” error when using Azure SQL and Entity Framework 6. In this article I explain why happens this error…
3 min read
Tip: Microsoft LogParser [Studio] superfast SQL-like querying of any log file
LogParser (download) is a command line tool from Microsoft which allows you to query any text-based log file using SQL-like syntax. The basic list of supported formats is quite…
Robert Haken
3 min read
Conclusion to my #NoResharper challenge with Visual Studio 2017
With Visual Studio 2017 being released earlier this year I decided to go for my regular #NoResharper challenge. With every single major version of VS I try to…
Robert Haken
3 min read
Azure: Disable outbound traffic from VNet to internet except the Azure Services
Virtual Networks and Virtual Network Interfaces in Azure could have own Network Security Groups. Every group consists from security rules which enable or disable traffic by defined rules.…
6 min read