Eldritch Conundrum

Eldritch Conundrum has asked 30 questions and find answers to 9 problems.

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Apparently, this user prefers to keep an air of mystery about them. Oh well

Eldritch Conundrum questions

How is Nullable<T> different from a similar custom C# struct?
Go as a backend for my compiler?
Why does the .Net Dictionary look like it is sorted? [duplicate]
How can I add scala actors to an existing program without interfering with the normal termination behavior?
When should I define a (explicit or implicit) conversion operator in C#? [closed]
How to match a regex with backreference in Go?
Incorrect syntax near 'go' in SQL Server Management Studio
Use functional combinators on Scala Tuples?
How to redefine a Ruby constant without warning?
How do I undo "Scope to this" in Visual Studio 2012?

Eldritch Conundrum answers

What's the simplest algorithm to escape a single character?
How to match a regex with backreference in Go?
TypeConverter vs. Convert vs. TargetType.Parse
What are "sums-and-products" data structures?
to_s vs. to_str (and to_i/to_a/to_h vs. to_int/to_ary/to_hash) in Ruby
Composite Key Dictionary
Dictionary access: composite key vs concatenated string index