Truncate Decimal Numbers without Rounding in C#

How to sanitize decimal numbers to the Nth decimal place without rounding.

For example, if you are dealing with crypto numbers like BTC (Bitcoin) or ETH (Etherium).

https://gist.github.com/Protiguous/14d51ba097783f249f1f3b441ed82674#file-sanitize-cs

Longer lines of code are faster.. eh?

I mean, I did have another programmer vehemently argue once long ago that putting more code on one line would make it “run faster.” But of course he was stark raving nuts. Trying to explain to him (with a straight face–which was challenging) how the interpreter or compiler would break that long line apart into discrete one-instruction-per-line statements–essentially identical to the result if he had gone ahead and just made the code readable instead of trying to out-clever the compiler–had no effect on him whatsoever. But I digress.

Craig Tullis on a StackOverflow answer.
Photo by Daniel on Pexels.com

Premature optimization is the root of all evil.. NOT!

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.

Famous computer scientist Donald Knuth

His quote is often clipped down to just “premature optimization is the root of all evil”, but that is NOT TRUE.

Yes, don’t micro-benchmark everything when you begin a project, but please do think ahead. And once you’ve got the program working as intended, then make it faster by profiling and looking for the bottlenecks.

Choose the proper data structures. Array? List? Hashset? Queue? Dictionary? Caching?
Take a few moments and think it over.

How often will this line of code be ran? Do I need to inline it, or pull it out into a separate method?

List collation on all columns in all tables in database on SQL Server

select
    concat( quotename( [s].[name] ), N'.', quotename( [t].[name] ), N'.', quotename( [c].[name] ) ) [Column Name]
   ,[c].[collation_name] [Collation]
from [sys].[schemas] [s]
join [sys].[tables] [t] on [t].[schema_id] = [s].[schema_id]
join [sys].[columns] [c] on [c].[object_id] = [t].[object_id]
where [c].[collation_name] is not null
order by [Column Name];

Example: