Source.chromium.org

A class should have one reason to change. For example,

public class Report
{
  public string GenerateContent() { ... }
  public void PrintToPdf() { ... }
  public void SaveToFile() { ... }
}

… violates this principle because content generation, PDF formatting, and file storage are all in one place.

Instead, split the responsibilities into separate classes:

public class Report
{
  public string GenerateContent() { ... }
}

public class PdfPrinter
{
  public void Print(Report report) { ... }
}

public class FileStorage
{
  public void Save(string content) { ... }
}

Interviewing Rubric

Problem Analysis. Extract key entities and responsibilities, ask a few questions to lock down scope, and frame the problem before touching code.

Class Design. Choose the right responsibilities, shape the method signatures, define clear ownership, and keep the boundaries clean.

Code Quality. Encapsulation, well-managed state, sensible use of composition or inheritance, clear separation of concerns, naming, consistency, and dependency direction.

Extensibility and Maintainability. Can the design absorb new functionality without being rewritten? Designs should adapt easily, without anticipating every possible future.

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AI Code Completions

As the web evolves, where do practitioners congregate and exchange ideas?

Working Groups

develops standards and guidelines to help everyone build a web based on the principles of accessibility, internationalization, privacy and security.

publishes standards and drafts , which are then implemented by browser vendors, e.g., Chromium, Firefox, and Safari. Topics of interest: accessibility, browser, CSS, data, DOM, digital publishing, graphics, HTML, HTTP, internationalization, media, performance, privacy, protocol, security, web API, web fonts, Web of Things (WoT), and XML.

Clang, LLVM, GCC, and MSVC

LLVM is an umbrella project, with several sub-projects, e.g. LLVM Core and Clang. LLVM Core libraries provide an optimizer and code generator for different CPUs. Clang is an “LLVM native” C/C++/Objective-C compiler which aims for fast compilation, useful error and warning messages, and a platform for building source-level tools. The Clang Static Analyzer and clang-tidy are examples of such tools.

Bloom Filters

Motivation

A Bloom filter for a set \(X: \{x_1, x_2, …, x_n\} \) from some universe \(\mathbb{U}\) allows one to test whether a given item \(x \in \mathbb{B}\) is an element of \(X\). Hash tables can already answer \(x \in X\) queries in \(O(1)\) expected time, and \(O(n)\) space.

Debugging 101

printf Debugging and Logging

In printf debugging, one adds print statements and keeps iterating until enough information has been extracted.

Using logging has several advantages over printf debugging: varying logging destinations (e.g. standard output, files, sockets, remote servers, etc.); severity levels (e.g. INFO, DEBUG, WARN, ERROR, &c) that support filtering of output; color-coding for readability.