programming-tools

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Regex Debugger Field Guide: When Five Decisions, One Trace Timeline, and the Backtrack Panel Decide Whether Your Regex Lands a Match or Burns 10 ms on a Catastrophic Pattern

By xiezixing 2026年9月28日

A regex that "works" in your editor can quietly do three different things when you…

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CSV Flavor to SQL INSERT Emitter Field Guide: When Four Dialects, Six NULL Tokens, and Twelve Quoting Rules Decide Whether Your 200-MB Load Hits Production or Hits a Syntax Error

By xiezixing 2026年9月13日

Loading 200 MB of CSV straight into MySQL usually ends one of two ways: a…

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JSON to TypeScript Converter Field Guide: When Four Flags Decide Whether Your Type Hints Catch Real Bugs or Just Look Like They Do

By xiezixing 2026年9月7日

Four flags — rootName, exportStyle, optionalFields, plus the hidden JSON.parse strictness — decide whether your inferred TypeScript types catch real bugs or just look like they do.

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JSON to Rust Struct Converter Field Guide: When Three Knobs Decide The Generated Code

By xiezixing 2026年9月3日

Field-ready Rust structs come out of three knobs: a JSON sample, a root type name,…

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Hex/Unicode Converter Field Guide: When Four Operations and Three Output Formats Decide What Your String Actually Becomes

By xiezixing 2026年9月3日

Most engineers meet their first hex escape sequence at 2 a.m. while debugging a corrupted…

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Unicode Escape Converter Field Guide: When Four Escape Styles Beat One Universal Form

By xiezixing 2026年8月28日

Eighteen hex and Unicode escape pairs sit in your clipboard, and a single NFD-vs-NFC mismatch…

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SQL Query Formatter & Minifier Field Guide

By xiezixing 2026年8月11日

Reading SQL should never depend on who wrote it. A consistent SQL formatter gives every…

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Regex Railroad Diagram Visualizer Field Guide

By xiezixing 2026年8月10日

A railroad diagram is the easiest way to see what a regex actually means. Paste…

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Seven Ways to Group a List, and When to Pick Each: A Field Guide to Array Grouper

By xiezixing 2026年8月4日

Closing thought: which method matches your data shape If your list is a flat sequence…

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The Ampersand That Broke the Feed: A Field Guide to XML Escape / Unescape

By xiezixing 2026年8月4日

The Ampersand That Broke the Feed: A Field Guide to XML Escape / Unescape A…