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Programming languages · 30 lessons · up to 10 minutes each
C#
A planned C# sequence spanning fundamentals, composition, nullable types, testing, and runtime features.
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C#
Permanent access to the lessons published in this track when you buy. Future lessons are not included. 0 of 30 lessons are published; 0 are in owner review and 30 are Coming Soon.
$29.0030 lessons still in progress
Beginner
Lessons 1–10
01 C#: Sketch values, types, and pattern matching
Topic: values, types, and pattern matching
Draw a small map of values, types, and pattern matching in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner4 minComing Soon02 C#: Name the parts of control flow, loops, and local functions
Topic: control flow, loops, and local functions
Label the main pieces in control flow, loops, and local functions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner5 minComing Soon03 C#: Trace an example of methods, overloads, and lambda expressions
Topic: methods, overloads, and lambda expressions
Follow one input through methods, overloads, and lambda expressions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner6 minComing Soon04 C#: Compare choices for strings, arrays, collections, and LINQ
Topic: strings, arrays, collections, and LINQ
Write down one practical difference between strings, arrays, collections, and LINQ in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner7 minComing Soon05 C#: Find the boundary in classes, records, structs, and properties
Topic: classes, records, structs, and properties
Mark where classes, records, structs, and properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner8 minComing Soon06 C#: Inspect an example of interfaces, generics, and constraints
Topic: interfaces, generics, and constraints
Annotate a minimal example of interfaces, generics, and constraints in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner9 minComing Soon07 C#: Connect nullable references and exceptions to a neighboring concept
Topic: nullable references and exceptions
Show how nullable references and exceptions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner10 minComing Soon08 C#: Spot a failure mode in async, cancellation, and concurrency
Topic: async, cancellation, and concurrency
Describe one likely failure for async, cancellation, and concurrency in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner3 minComing Soon09 C#: Read an official example of C# 14 extension members and field-backed properties
Topic: C# 14 extension members and field-backed properties
Summarize an official example of C# 14 extension members and field-backed properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner5 minComing Soon10 C#: Choose a use case for Span<T>, testing, performance, and publishing
Topic: Span<T>, testing, performance, and publishing
Match one small use case to Span<T>, testing, performance, and publishing in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Beginner6 minComing Soon
Intermediate
Lessons 11–20
11 C#: Build an example with values, types, and pattern matching
Topic: values, types, and pattern matching
Create a small working example that uses values, types, and pattern matching in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate4 minComing Soon12 C#: Compose control flow, loops, and local functions with another component
Topic: control flow, loops, and local functions
Combine control flow, loops, and local functions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon13 C#: Configure methods, overloads, and lambda expressions for a small case
Topic: methods, overloads, and lambda expressions
Set up methods, overloads, and lambda expressions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon14 C#: Validate inputs around strings, arrays, collections, and LINQ
Topic: strings, arrays, collections, and LINQ
Add a check around strings, arrays, collections, and LINQ in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate7 minComing Soon15 C#: Use classes, records, structs, and properties in a short workflow
Topic: classes, records, structs, and properties
Add classes, records, structs, and properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate8 minComing Soon16 C#: Refactor interfaces, generics, and constraints into a reusable unit
Topic: interfaces, generics, and constraints
Extract interfaces, generics, and constraints in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate9 minComing Soon17 C#: Exercise nullable references and exceptions with sample data
Topic: nullable references and exceptions
Run sample data through nullable references and exceptions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate10 minComing Soon18 C#: Observe async, cancellation, and concurrency outputs
Topic: async, cancellation, and concurrency
Capture the result of async, cancellation, and concurrency in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate3 minComing Soon19 C#: Recover from a C# 14 extension members and field-backed properties failure
Topic: C# 14 extension members and field-backed properties
Handle one expected failure from C# 14 extension members and field-backed properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon20 C#: Document Span<T>, testing, performance, and publishing behavior
Topic: Span<T>, testing, performance, and publishing
Write a short usage note for Span<T>, testing, performance, and publishing in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon
Advanced
Lessons 21–30
21 C#: Test a boundary around values, types, and pattern matching
Topic: values, types, and pattern matching
Add an edge-case test for values, types, and pattern matching in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced4 minComing Soon22 C#: Harden control flow, loops, and local functions
Topic: control flow, loops, and local functions
Add the relevant access, safety, or validation control to control flow, loops, and local functions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced5 minComing Soon23 C#: Measure methods, overloads, and lambda expressions
Topic: methods, overloads, and lambda expressions
Record a small baseline for methods, overloads, and lambda expressions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced6 minComing Soon24 C#: Reduce cost in strings, arrays, collections, and LINQ
Topic: strings, arrays, collections, and LINQ
Change one measurable cost in strings, arrays, collections, and LINQ in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced7 minComing Soon25 C#: Diagnose a classes, records, structs, and properties failure
Topic: classes, records, structs, and properties
Use an observable signal to explain a failure in classes, records, structs, and properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced8 minComing Soon26 C#: Make interfaces, generics, and constraints repeatable
Topic: interfaces, generics, and constraints
Show that rerunning interfaces, generics, and constraints in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced9 minComing Soon27 C#: Review trade-offs in nullable references and exceptions
Topic: nullable references and exceptions
Compare two documented approaches to nullable references and exceptions in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced10 minComing Soon28 C#: Improve async, cancellation, and concurrency maintainability
Topic: async, cancellation, and concurrency
Refine async, cancellation, and concurrency in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced3 minComing Soon29 C#: Verify C# 14 extension members and field-backed properties end to end
Topic: C# 14 extension members and field-backed properties
Check that a complete small flow using C# 14 extension members and field-backed properties in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced5 minComing Soon30 C#: Audit Span<T>, testing, performance, and publishing against its source docs
Topic: Span<T>, testing, performance, and publishing
Check the implementation of Span<T>, testing, performance, and publishing in the context of idiomatic C# language skills from expressions to runtime behavior; save a short example or check that demonstrates the result.
Advanced6 minComing Soon
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