Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Typo in environments.rmd #50

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Typo in environments.rmd #50

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion environments.rmd
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -336,7 +336,7 @@ show_env()

Let's put this all together to see how R evaluates a function. Before you call a function, R is working in an active environment; let's call this the _calling environment_. It is the environment R calls the function from.

Then you call the function. R responds by setting up a new runtime environment. This environment will be a child of the function's origin enviornment. R will copy each of the function's arguments into the runtime environment and then make the runtime environment the new active environment.
Then you call the function. R responds by setting up a new runtime environment. This environment will be a child of the function's origin environment. R will copy each of the function's arguments into the runtime environment and then make the runtime environment the new active environment.

Next, R runs the code in the body of the function. If the code creates any objects, R stores them in the active, that is, runtime environment. If the code calls any objects, R uses its scoping rules to look them up. R will search the runtime environment, then the parent of the runtime environment (which will be the origin environment), then the parent of the origin environment, and so on. Notice that the calling environment might not be on the search path. Usually, a function will only call its arguments, which R can find in the active runtime environment.

Expand Down