St-core.fscss Lets Developers Build Line Charts Using Pure CSS Alone

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St-core.fscss is an open-source charting library that renders multi-line charts without JavaScript, SVG, or Canvas. It relies on CSS custom properties for data points, clip-path polygons for line shapes, and FSCSS mixins to generate the required styles at compile or runtime. Developers declare a single renderer and assign up to eight Y-axis data points per line using CSS variables on a 0–100 scale. Because data is stored in CSS properties, lines can be updated dynamically via JavaScript's setProperty, triggering automatic browser repaints with no charting library overhead. The project is available on GitHub and aims to deliver an extremely lightweight, near-zero JS runtime charting solution.

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How to Prevent Duplicate SMS Password-Reset Alerts Under Timeout and Retry Conditions

Duplicate SMS password-reset notifications can occur when developers treat a timed-out request as a failed send and immediately retry, rather than as an unknown outcome. A robust approach requires persisting an idempotency key and expiry before dispatch, then delegating retries to a background worker that can reconcile the original attempt's status. Status polling and retry logic must be kept strictly separate, as combining them in a single function is a common source of duplicate messages. Every dispatch attempt should also check the current time against the token's expiry, halting sends once delivery would no longer be meaningful. The guiding contract is to admit each password-reset notification exactly once, retain evidence of every state transition, and never allow callers to trigger new work simply by querying the current status.

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ProgrammingDEV Community ·

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A developer revisited Rails routing fundamentals after realizing they could build APIs but struggled to explain the underlying mechanics. Rails uses a routes.rb file to connect incoming HTTP requests to specific controller actions, with the 'resources' helper auto-generating standard CRUD routes. Key distinctions include 'resource' versus 'resources', and the 'member' versus 'collection' blocks for non-standard actions on single or multiple records respectively. Nested resources help express relationships between models in URLs, though deep nesting is discouraged for maintainability. Namespacing, such as '/api/v1/', keeps API controllers logically separated from regular web controllers within the application.

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ProgrammingHacker News ·

Photo Essay Captures Isolated Workers Living at the Edge of Patagonia

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ProgrammingDEV Community ·

How to Integrate Claude or GPT into a Python App: A Developer Guide

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