Why These and That in Every System
The article discusses the author's experience in building a compiler, emphasizing that understanding the underlying problems is more important than relying solely on data structures and algorithms. The author reflects on the challenges faced while transitioning from Rust to C++ and the importance of recognizing performance costs in real-world projects. Ultimately, the piece advocates for a deeper understanding of system design and the relationship between high-level code and machine execution.
- ▪The author has been working on a lexer for a compiler since May 2026.
- ▪They emphasize that data structures and algorithms alone do not solve programming challenges in software engineering.
- ▪The author highlights the importance of understanding performance costs and the relationship between high-level code and machine execution.
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Record
| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/ayndlr/why-these-and-that-in-every-system-17io |
| Publication time | Sun, 24 May 2026 13:20:17 +0000 |
| Retrieval time | 2026-05-24T13:37:32.733Z |
| Last seen | 2026-05-24T13:37:32.733Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | None |
| Cluster logic | Not yet clustered, or no peer story found in the clustering window. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3936747) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Gideon Towolawi Posted on May 24 Why These and That in Every System #cpp #devjournal #softwareengineering #systems We all know about DSA—Data Structures and Algorithms. But that's not all there is to programming, no matter the field. I emphasize this especially in software engineering: DSA is almost never the fix on its own. Today marks over a week and a half on my lexer since the beginning of May 2026, when I decided to build a compiler.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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