Bash
Beginner
Bash: Retry a Command with Backoff
Retry a shell command with incremental delays for scripts that interact with unreliable services.
Snippet directory
Browse the working notes of a practical code library.
Go
Beginner
Go: Minimal HTTP Client with Timeout
A compact Go HTTP client pattern with timeout handling, status checks, and clear errors.
JavaScript
Beginner
JavaScript: Debounce Utility
A small debounce utility for search inputs, resize handlers, and other repeated browser events.
JavaScript
Beginner
Node: Convert CSV to JSONL
Read a delimited file and output JSONL records with selected columns and basic type coercion.
JavaScript
Beginner
Node: Convert JSONL to CSV
Convert selected JSONL fields to CSV with safe escaping for commas, quotes, and newlines.
JavaScript
Intermediate
Node: Deduplicate JSONL Records by Key
Remove duplicate JSONL records using a selected key while streaming records from input to output.
JavaScript
Beginner
Node: Read a Large File Line-by-Line
Read a large text file safely using Node.js streams and async iteration without loading the entire file into memory.
JavaScript
Intermediate
Node: Split a Large JSONL File
Split a JSONL file into smaller chunks by line count or approximate file size.
JavaScript
Intermediate
Node: Streaming JSONL Transform
Filter and map JSONL records from standard input while respecting stream backpressure.
Python
Beginner
Python: Atomic JSON Write
Write JSON safely by saving to a temporary file first and then replacing the destination atomically.
Python
Intermediate
Python: SQLite Migrations Table
A small dependency-free pattern for tracking and running SQLite migrations in order.
SQL
Intermediate
SQL: Keyset Pagination Pattern
Use keyset pagination instead of offset pagination for stable, fast database browsing.
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