pop_back: Pop the Back Element
In Immutables: Fast and Functional Data Structures
View source: R/30-api-flexseq-ends.R
pop_back R Documentation
Pop the Back Element
Description
Returns the last element and the remaining sequence.
Usage
pop_back(x)
Arguments
x
A flexseq.
Details
This operation is persistent: x is not modified.
On empty input, returns a non-throwing miss object with
value = NULL and remaining = x.
Value
A list with fields:
-
value: the last element, or NULL when x is empty.
-
remaining: the sequence after removing the last element.
Examples
s <- flexseq("a", "b", "c")
out <- pop_back(s)
out$value
out$remaining
s # unchanged
pop_back(flexseq())
Immutables documentation built on April 29, 2026, 1:06 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
View source: R/30-api-flexseq-ends.R
| pop_back | R Documentation |
Pop the Back Element
Description
Returns the last element and the remaining sequence.
Usage
pop_back(x)
Arguments
x |
A |
Details
This operation is persistent: x is not modified.
On empty input, returns a non-throwing miss object with
value = NULL and remaining = x.
Value
A list with fields:
-
value: the last element, orNULLwhenxis empty. -
remaining: the sequence after removing the last element.
Examples
s <- flexseq("a", "b", "c")
out <- pop_back(s)
out$value
out$remaining
s # unchanged
pop_back(flexseq())
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.