Rails with recent Rack versions can emit a session cookie security warning when no secret is configured; locking Rack to 1.4.1 works around the issue.

Make Mac apps enter full screen from bash scripts by calling a small helper script; requires Accessibility access and only works with apps that support full screen.

Calculates CSS selector specificity for a given selector, helping diagnose why one rule overrides another in the cascade.

will_paginate can page plain Ruby arrays, returning a paginated array-like object with total_entries and the same pagination controls as ActiveRecord scopes.

Font Awesome 3.0 adds 40 new icons, CSS animation-based spinning, and a smaller file size; the font can be subset to include only needed icons.

Preparing an existing Rails app for Rails 4 involves updating deprecated APIs, dependencies, and configuration before upgrading the framework.

A cozy place to find a short, catchy name for a product, company, or domain.

Ruby on Rails 4 adoption will require updates for many web applications. A 31-day series prepares developers for a smoother upgrade.

jQuery creates a new wrapper on each $(...) call, so == fails for matching selections. Use .is() to test whether two jQuery objects wrap the same DOM elements.

Visual polish can improve small-team projects and make software feel more successful. Five basic art and design principles help reduce ugly interfaces and weak presentation.

Pure CSS can render many decorative shapes with a single HTML element, avoiding extra markup for icons, badges, and UI flourishes.

Installing ffi can fail when the system lacks the libffi development package. Installing libffi-dev on Debian-based systems resolves the missing header/library dependency.

jQuery plugin for matching element heights or widths to create uniform layouts in grids, cards, and columns.

Frustration with DCI and Clean Ruby centers on ambitious promises that feel unfinished and oversold in large Ruby on Rails applications.

git blame -w ignores whitespace-only changes, keeping authorship attribution on the original code instead of indentation edits. git diff -w does the same for comparisons.

Microsoft Office prefetches hyperlinks and opens the browser without cookies, so redirected links can lose session state. Returning 200 OK to Office user agents avoids the redirect path.

Create XLSX spreadsheets in Ruby with charts, images, styling, auto column sizing, and schema validation; handles large files and eases migration from spreadsheet.

Consul 0.4.2 fixes unexpected behavior when querying powers that return nil, making predicate and bang methods return false or raise Consul::Powerless consistently.

JavaScript stack traces differ across browsers and often need normalization after unhandled exceptions. TraceKit provides a consistent representation for IE, Firefox, Chrome, Safari, and Opera.

GitHub may keep stale PR diffs after merged commits from another branch remain listed. A forced no-op push can refresh the comparison against the target branch.

Placeholder image generation for specific dimensions and topics is useful when building layouts, prototypes, or content mockups without final artwork.

Incoming calls can be made more noticeable by marking the window as demanding attention or by showing a desktop notification bubble.

A responsive jQuery audio player plugin with touch-friendly controls and a CSS-only interface. No images are used in the UI.