ClaudSkills / Engineering / engineering-misc

Swift Formatstyle

Quality score: 70/100 · Category: Engineering · Sub-category: engineering-misc

lang:swift

Format values for display using the FormatStyle protocol and its concrete types. Use when formatting numbers (integers, floating-point, decimals), currencies, percentages, dates, date ranges, relative dates, durations (Duration.TimeFormatStyle, Duration.UnitsFormatStyle), measurements, person names (PersonNameComponents.FormatStyle), byte counts (ByteCountFormatStyle), lists (ListFormatStyle), and URLs (URL.FormatStyle). Also covers creating custom FormatStyle conformances and replacing legacy Formatter subclasses. FormatStyle is available iOS 15+; Duration styles require iOS 16+.

What this skill does

Swift Formatstyle is a production-ready Claude Code skill (quality score 70/100) in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/swift-formatstyle/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when formatting numbers (integers, floating-point, decimals), currencies, percentages, dates, date ranges, relative dates, durations (Duration.TimeFormatStyle, Duration.

Who uses this skill

The Swift Formatstyle skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/swift-formatstyle
curl -L https://claudskills.com/skills/swift-formatstyle/SKILL.md \
  -o ~/.claude/skills/swift-formatstyle/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/swift-formatstyle/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/swift-formatstyle/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\swift-formatstyle\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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