Apex String And Regex

Q: What is a Claude Code skill and how does the Apex String And Regex skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Apex String And Regex is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: performance · Last updated: 2026-05-21

Apex String class methods, Pattern/Matcher regex, text parsing, template rendering, and the null-safety landmines that bite every Apex programmer eventually. Covers `String.split` trailing-empty-drop semantics, `Pattern.compile` static-final caching, `Matcher.group` ordering rules, and the `String.format` MessageFormat-vs-printf trap. NOT for formula functions (FORMULA / TEXT in formula fields), NOT for SOQL string-bind escaping (see apex/dynamic-soql).

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Apex String And Regex includes pricing or quota commentary; 9 code blocks for direct copy-paste. The SKILL.md runs to about 1,412 words, in the catalog's typical mid-range.

Source: pypi.org/project/sfskills-mcp
License: Apache-2.0
Original author: Pranav Nagrecha
Indexed lastmod: 2026-05-21
Catalog position: Engineering · performance
Indexed related skills: 10

How Apex String And Regex fits the catalog

Apex String And Regex sits in the Engineering category under the performance sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

The Apex String class plus Pattern / Matcher is the everyday text-handling toolkit in Salesforce. Most Apex programmers learn it through error messages — NullPointerException on a method call, System.StringException from an m.group() with no preceding find(), a String.split result that's missing the last element, a String.format that prints %s literally. This skill encodes the boundary rules and the right-shape-first patterns so those errors stop happening.

What this skill does

Apex String And Regex is a community-contributed Claude Code skill in the performance sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/apex-string-and-regex/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Apex String And Regex Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/apex-string-and-regex
curl -L https://claudskills.com/skills/apex-string-and-regex/SKILL.md \
  -o ~/.claude/skills/apex-string-and-regex/SKILL.md

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

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

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Apex String And Regex Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/apex-string-and-regex/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Apex String And Regex skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Apex String And Regex skill?

Use Apex String And Regex when your Claude Code task falls under the Engineering category — specifically in the performance area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Apex String And Regex" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Apex String And Regex skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Apex String And Regex is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/PranavNagrecha/AwesomeSalesforceSkills/blob/03f41a3ad58e942d13a224a98f3a769869f309f3/skills/apex/apex-string-and-regex/SKILL.md
License: Apache-2.0
Author: Pranav Nagrecha
Website: https://pypi.org/project/sfskills-mcp/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Pranav Nagrecha. (2026). Apex String And Regex [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/apex-string-and-regex/

BibTeX

@misc{apex-string-and-regex-2026,
  author    = {Pranav Nagrecha},
  title     = {Apex String And Regex [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/apex-string-and-regex/}
}

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Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/apex-string-and-regex/#security)

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Browse all Engineering skills → Top 100 skills

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