Controlling copy and paste on the web can improve user flows and enable custom clipboard behavior. Modern JavaScript can trigger copy actions without Flash.

input fires while a text field is edited, unlike change, and can replace polling for IE9+; it does not trigger for check boxes.

Choosing the wrong Rails date and time type can cause subtle bugs in storage, comparisons, and timezone handling. Time suits most application timestamps; DateTime is for specialized calendar use.

ActiveRecord::Base#becomes leaves changed attribute tracking inconsistent, which can break attribute_was checks after casting models with defaults. ActiveType.cast is often the safer alternative.

Rails 4.1 infers association inverses automatically, but failures are silent and extra options can block detection. Setting :inverse_of manually remains safer.

HTTP/2 reduces HTTP/1.1 workarounds and shifts optimization into the transport layer, improving application speed, simplicity, and robustness while enabling new performance gains.

HTTP/2 changes long-held optimization rules, making some common performance tricks counterproductive for modern web delivery.

Google’s icon library offers PNG, SVG and icon font formats, but quality and selection may be weaker than familiar alternatives such as Font Awesome.

Background jobs can make Exception Notifier crash if foreground settings like request are used, so foreground and background mail sections must be configured separately.

Ruby singleton classes provide per-object behavior and metaprogramming hooks for adding methods to a single instance or class.

ActiveModel::Errors behaves like a hash for storing and querying validation messages on model attributes in Rails 4.

Apache 2.4+ can act as a reverse proxy for apps on other hosts or paths, including redirect, cookie, and asset-path rewriting when the backend is not proxy-aware.

Project code is reviewed before staging to catch client rejections early and keep changes maintainable. Gatekeepers approve or reject merge requests and decide whether a review is needed.

Delegated jQuery events can be hard to fire programmatically for testing; native dispatchEvent with the right event class works better than trigger in many cases.

sslscan reports TLS/SSL cipher support and certificate details for remote hosts, helping identify weak protocols, preferred ciphers, and certificate validity.

Capistrano 3 replaces the old DSL with Rake and SSHKit, changing task syntax, hooks, server settings, and file layout during migration from Capistrano 2.

CucumberFactory 1.11 adds support for FactoryGirl traits, letting Cucumber steps create records with named variations such as vintage and moody.

datetime_select creates a clumsy date and time chooser in Rails; a visual picker is usually better, but a Cucumber step can still drive it.

has_defaults 0.4.2 evaluates default-value lambdas with instance_exec, enabling zero-argument lambdas and procs for computed attributes.

Savon mocks usually require an exact SOAP request body, but message: :any accepts any payload and returns the stubbed XML.

Ubuntu can intercept Ctrl+Space for input-method switching, breaking autocomplete in RubyMine and other apps. Changing the iBus shortcut restores the keybinding.

New vdisks may not appear inside a VMware ESXi Linux guest until a SCSI rescan is forced on the correct host bus.