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Boris Cherny’s 10 team-sourced tips for using Claude Code

See Boris’s post: these tips come from the Claude Code team, and there’s no single “right” setup—experiment and keep what works.

1) Do more in parallel

• Run 3–5 Claude sessions at once, one per task.
• The team’s preferred approach is git worktree so each session has its own isolated working directory.
• Some folks also keep a dedicated “analysis” worktree for log reading / BigQuery-style investigation.

2) Start complex tasks in plan mode

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collapsible markdown?

CLICK ME

yes, even hidden code blocks!

print("hello world!")

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Sans jQuery

Events

// jQuery
$(document).ready(function() {
  // code
})

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Skill Builder Guide

The complete guide to building Skills for Claude — covers fundamentals, planning, testing, distribution, patterns, and YAML frontmatter reference (converted from Anthropic's official PDF)

Contents

• Introduction
• Chapter 1: Fundamentals
• Chapter 2: Planning and Design
• Chapter 3: Testing and Iteration

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Convert a screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

joyrexus

JavaScript Array Methods

Excerpted from the D3 API docs.

Note esp. usage of the map, filter, and reduce iteration methods. For a nice intro to these methods, see Tom MacWright's talk Beyond the For Loop, and for quick guidance on when to use which iteration method, see this gist.

Mutation Methods

That modify the array:

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Setup
-----

git clone <repo>
  clone the repository specified by <repo>; this is similar to "checkout" in
  some other version control systems such as Subversion and CVS

Add colors to your ~/.gitconfig file:

  [color]

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Hi:

perl -e 'print "hello world!\n"'

A simple filter:

perl -ne 'print if /REGEX/'

Filter out blank lines (in place):

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I've heard a number of people praise the Greiner-Hormann algorithm for clipping arbitrary polygons. They say it has a certain conceptual simplicity and elegance.

@jasondavies is utilizing Greiner-Hormann for D3's polygon clipping operations (2D and spherical). He recently gave a demo of boolean operations on polygons based on as-of-yet unreleased work here.

His earlier clipping demos can be found here and here.

@w8r has a nice, clean implementation of the algorithm for 2D clipping operations with no dependencies. He provides an adapter for clipping polygon regions defin

joyrexus

Leap WebSocket Server

The Leap Motion service/daemon provides a WebSocket server listening to port 6347 on the localhost domain. The server provides tracking data in the form of JSON formated messages (i.e., time-stamped "frames" containing the tracking data at a given moment).

This gist demonstrates how to connect to the device's websocket stream. It pipes a user specified number offrames from the Leap's websocket stream to stdout or to a user specified filename.

See Protocol for communicating with leapd for more info and updates.