Thinking in LINQ
summary
Demonstrates concrete LINQ patterns: replacing nested loops with select many, using deferred execution to avoid immediate materialization, and flattening dictionaries in one line with LINQPad demos. Builds a T9-like subsequence suggester (returns top four suggestions), clones Peter Norvig’s spellchecker in C# (25-line Python original vs 59-line LINQ version), implements a lazy Fibonacci sequence (can take the first 40 instantly), exposes an Armstrong DSL that compiles English phrases into LINQ over 1–10,000, and uses Roslyn to find unused parameters for refactoring.
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chapters (17)
- 0:00Introduction
- 14:05Subsequences
- 15:23Longest Subsequence
- 19:10Spellchecking
- 20:35List comprehension
- 24:10Training
- 26:40Fibonacci Series
- 31:05External DSL
- 35:20Console
- 36:10Query
- 37:40Code
- 40:05Map
- 43:20Some
- 44:20Generate
- 46:10Metaprogramming
- 48:20Syntax Tree
- 55:15Iris
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