alfredohdz.io

What It Is

alfredohdz.io is the personal website and technical blog of J. Alfredo Hernández Alarcón. Based on the site content, the author is a software engineer with experience focused on mobile development, the Apple ecosystem, Objective-C, Swift, and TDD practices. The site feels more like a personal knowledge base and portfolio entry point than a commercial product or online course platform.

Core Features

The site centers on blog posts and a personal introduction. The articles are highly focused on Swift/iOS development, covering topics such as Swift type erasure, the Singleton design pattern, adding async/await support to existing asynchronous callback APIs, detecting memory leaks with unit tests, and simulating poor network conditions on iOS devices or simulators. Posts usually include background explanations, code snippets, and practical migration examples, making them useful references for engineers with some iOS experience. The site also provides links to GitHub, social profiles, and a CV, making it easy to learn more about the author’s projects and background.

Pricing

The site content is publicly readable. No paid membership, subscription, paid course, advertising product, or consulting fee information was found in the crawled content, so it can be considered a free technical content site.

Pros and Cons

Its main strength is a clear focus on engineering practices around Swift and Apple platforms, with articles that are practical rather than generic introductions. For example, the async/await article not only explains the concept but also shows how to bridge older completion handler APIs using continuations. The page structure is simple, with few distractions while reading.

The limitations are also clear: this is a personal blog, with a limited number of articles and a relatively low update frequency. It cannot replace Apple’s official documentation, structured courses, or large developer communities. The site does not appear to have a prominent search function, tag system, or structured learning path. The content is mainly in English, which may create a reading barrier for Chinese-speaking beginners.

Who It’s For

It is suitable as a supplementary reference for junior-to-mid and mid-to-senior iOS developers when dealing with specific Swift language features, async programming migration, memory management testing, and similar issues. It is also useful for recruiters or peers who want to understand the author’s technical background. It is not ideal as a primary textbook for learning Swift from scratch.

Access from China

Personal static blogs of this type are usually directly accessible. Based on the crawled content, the site does not appear to depend on overseas services that require login. However, if links to GitHub, Apple Developer, or other external resources load unreliably in mainland China, extended reading may be affected. Overall, it should be accessible via a direct connection.