Your path

Step 1
What really happens when you press F5~2 h
Step 2
Value and reference types: the stack, the heap and boxing~2 h · by the author’s design, after “What really happens when you press F5”
Step 3 · by the author’s design, after “Value and reference types: the stack, the heap and boxing”inside a rung the order is up to you
Memory and lifetime: the garbage collector, IDisposable, using~2 h
class, struct, record: what to declare data with~2 h
Strings: immutability, interning, StringBuilder, Span~1.5 h
Step 4
Equality, hashing and comparison: a contract that is easy to break~2 h · by the author’s design, after “class, struct, record: what to declare data with”
null: nullable types, nullable reference annotations and what to do about them~1.5 h · by the author’s design, after “class, struct, record: what to declare data with”
Span, Memory, ref struct and how to measure~2 h · by the author’s design, after any one of these: “Value and reference types: the stack, the heap and boxing”, “Strings: immutability, interning, StringBuilder, Span”
Encapsulation and construction: an object that cannot be assembled wrongly~2 h · by the author’s design, after “class, struct, record: what to declare data with”
Step 5 · ~2 h
Pattern matching, tuples, deconstructionby the author’s design, after any one of these: “class, struct, record: what to declare data with”, “null: nullable types, nullable reference annotations and what to do about them”
Inheritance and polymorphism: virtual, override, new, sealedby the author’s design, after “Encapsulation and construction: an object that cannot be assembled wrongly”
Delegates, lambdas, closures, eventsby the author’s design, after “Encapsulation and construction: an object that cannot be assembled wrongly”
Exceptions: what they are and what they are notby the author’s design, after “Encapsulation and construction: an object that cannot be assembled wrongly”
Step 6
Interfaces: the contract, explicit implementation, DIM~1.5 h · by the author’s design, after “Inheritance and polymorphism: virtual, override, new, sealed”
async/await: what it is and what it is not~2.5 h · by the author’s design, after “Delegates, lambdas, closures, events”
Step 7 · ~2 h
Generics: constraints, reification, varianceby the author’s design, after “Interfaces: the contract, explicit implementation, DIM”
Data at the boundary: JSON, files and streams, dates and timesby the author’s design, after any one of these: “Exceptions: what they are and what they are not”, “async/await: what it is and what it is not”
Concurrency: lock, Lock, Interlocked, SemaphoreSlim, Channel, Parallelby the author’s design, after “async/await: what it is and what it is not”
SRP: one reason to changeby the author’s design, after “Interfaces: the contract, explicit implementation, DIM”
Step 8 · ~2 h
Metadata: reflection, attributes, source generatorsby the author’s design, after any one of these: “What really happens when you press F5”, “Generics: constraints, reification, variance”
Collections: choosing a data structure and its costby the author’s design, after “Generics: constraints, reification, variance”
OCP: open for extension, closed for modificationby the author’s design, after “SRP: one reason to change”
Step 9 · ~2 h
LINQ: deferred execution, yield, IQueryableby the author’s design, after “Collections: choosing a data structure and its cost”
LSP: a subtype must be substitutableby the author’s design, after “OCP: open for extension, closed for modification”
Step 10
ISP: clients are not forced to depend on what they don't need~1.5 h · by the author’s design, after “LSP: a subtype must be substitutable”
Step 11
DIP and dependency injection~2.5 h · by the author’s design, after “ISP: clients are not forced to depend on what they don't need”
Step 12 · ~2 h
Creational patterns: who creates objects and howby the author’s design, after “DIP and dependency injection”
Structural patterns: how to assemble objects into a wholeby the author’s design, after “DIP and dependency injection”
Behavioral patterns: who calls whom and whenby the author’s design, after “DIP and dependency injection”, “Delegates, lambdas, closures, events”
The host, DI in practice, configuration, loggingC# в приложении · by the author’s design, after “DIP and dependency injection”
Step 13 · ~2 h
Applied .NET patterns: Repository, Options, CQRS, Resultby the author’s design, after 2 of these: “Creational patterns: who creates objects and how”, “Structural patterns: how to assemble objects into a whole”, “Behavioral patterns: who calls whom and when”
Minimal API: the pipeline, binding, validation, errorsC# в приложении · by the author’s design, after “The host, DI in practice, configuration, logging”
HttpClient, resilience and background jobsC# в приложении · by the author’s design, after “The host, DI in practice, configuration, logging”, “async/await: what it is and what it is not”
EF Core without illusionsC# в приложении · by the author’s design, after “The host, DI in practice, configuration, logging”, “LINQ: deferred execution, yield, IQueryable”
Step 14
Finale: testability and talking about architecture out loud~2.5 h · by the author’s design, after “Applied .NET patterns: Repository, Options, CQRS, Result”, “async/await: what it is and what it is not”
Shipping to Azure: App Service, secrets, managed identity~2 h · C# в приложении · by the author’s design, after “Minimal API: the pipeline, binding, validation, errors”
Step 15 · ~2 h
What's new in C# 13 and 14 and how interviewers ask about itby the author’s design, after “Finale: testability and talking about architecture out loud”
Testing a service: from the unit to HTTPC# в приложении · by the author’s design, after “The host, DI in practice, configuration, logging”, “Finale: testability and talking about architecture out loud”
Examfinal · in the browser, without the assistantclosed · enrol on the course

0 of 38 units done · ~63.5 h without the optional units, ~75.5 h with them

Data at the boundary: JSON, files and streams, dates and times

This unit is open to those enrolled

Enrolment is free — it is what lets the server remember your progress between sessions.