What does require package do in Emacs?

What does require package do in Emacs?

This is in case the required package contains macros that the byte compiler must know about. It also avoids byte compiler warnings for functions and variables defined in the file loaded with require .

How do I add packages to Emacs?

Type M-x list-packages to open the package list. Press ‘i’ to mark for installation, ‘u’ to unmark, and ‘x’ to perform the installation. Press ‘RET’ to read more about installing and using each package.

How do I manually install Emacs packages?

Load the File Manually To use the package, all you have to do is to make emacs load the file. Alt + x load-file then give the file path. Now, emacs is aware of the package. To activate, call the command in the package.

Where are Emacs packages installed?

Once installed, the contents of a package are placed in a subdirectory of ~/. emacs. d/elpa/ (you can change the name of that directory by changing the variable package-user-dir ). The package subdirectory is named name – version , where name is the package name and version is its version string.

What is package initialize?

package-initialize goes through the list of installed packages and tries to run their auto-loads (and possibly defer further work) so that all the packages I’ve previously installed will work.

What is require in R?

The require() is designed to be used inside functions as it gives a warning message and returns a logical value say, FALSE if the requested package is not found and TRUE if the package is loaded. example: > require(xyz)

How do I open Emacs files?

Use Ctrl-x f to open a file from within Emacs.

How do you check if a package is installed in Emacs?

For people wondering how to check if a package. el package is installed, use package-installed-p . Show activity on this post.

What is the use of R packages?

R packages are a collection of R functions, complied code and sample data. They are stored under a directory called “library” in the R environment. By default, R installs a set of packages during installation. More packages are added later, when they are needed for some specific purpose.

How do I use Emacs on Windows?

There are several ways of starting Emacs on MS-Windows:

  1. From the desktop shortcut icon: either double-click the left mouse button on the icon, or click once, then press RET.
  2. From a task-bar shortcut icon, by clicking once the left mouse button.
  3. From the Command Prompt window, by typing emacs RET at the prompt.

How do I use Emacs on Mac?

  1. Visit Mac files with native Mac app in dired.
  2. Using the GUI Emacs.
  3. Call Emacs from other programs.
  4. Using Emacs.app from the Dock.
  5. Use Alt/Option as Meta Key under terminal emulators.
  6. Use Left Command as Meta Key under iTerm2 terminal emulator.
  7. Call AppleScript from Emacs.
  8. Encoding for Terminal.app on OS X.