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ActiveModel was created to extract the model behavior of ActiveRecord into a separate concern. This allows us to use ActiveModel behavior in any object, not just ActiveRecord models. ActiveRecord objects include all of this behavior by default.

pip is the most widely-used package manager for the Python Package Index, installed by default with recent versions of Python. pip <command> [options] where <command> is one of: install Install packages uninstall Uninstall packages freeze Output installed pack...

Quaternion.LookRotation(Vector3 forward [, Vector3 up]); Quaternion.AngleAxis(float angles, Vector3 axisOfRotation); float angleBetween = Quaternion.Angle(Quaternion rotation1, Quaternion rotation2);

Python 2 Docs: [https://docs.python.org/2/library/locale.html#locale.currency][1]

This section provides an overview of what razor is, and why a developer might want to use it. It should also mention any large subjects within razor, and link out to the related topics. Since the Documentation for razor is new, you may need to create initial versions of those related topics. ...

Web scraping is an automated, programmatic process through which data can be constantly 'scraped' off webpages. Also known as screen scraping or web harvesting, web scraping can provide instant data from any publicly accessible webpage. On some websites, web scraping may be illegal. Useful P...

A makefile is a text file which controls the operation of the make program. The make program is typically used to manage the creation of programs from their source files, but it can be more generally used to handle any process where files (or targets) need to be regenerated after other files (or ...

Devise is a very powerful gem, it allows you to sign up, sign in and sign out options just after installing. Moreover user can add authentications and restrictions to its applications. Devise also come with its own views, if user wants to use. A user can also customize sign up and sign in forms acco...

It's up to clients of the class implementing IDisposable to make sure they call the Dispose method when they are finished using the object. There is nothing in the CLR that directly searches objects for a Dispose method to invoke. It's not necessary to implement a finalizer if your object...

ParameterDetailshandleurl to a custom image for the handleanglethe starting rotation for the element.rotationCenterXposition about which the element will be rotatedrotationCenterYposition about which the element will be rotatedstepan angle in degrees that the rotation will snap to if the shift key ...

window.requestAnimationFrame(callback); window.webkitRequestAnimationFrame(callback); window.mozRequestAnimationFrame(callback); ParameterDetailscallback"A parameter specifying a function to call when it's time to update your animation for the next repaint." (https://developer.mo...

Separates the construction of a complex object from its representation so that the same construction process can create different representations. Separate the logic from representation. Reuse logic to work with different set of data.

What is undefined behavior (UB)? According to the ISO C++ Standard (§1.3.24, N4296), it is "behavior for which this International Standard imposes no requirements." This means that when a program encounters UB, it is allowed to do whatever it wants. This often means a crash, but it may si...

git mv <source> <destination> git mv -f <source> <destination> ParameterDetails-f or --forceForce renaming or moving of a file even if the target exists