R: Insert or Remove Named Elements

insert_named {mlr3misc} | R Documentation

## Insert or Remove Named Elements

### Description

Insert elements from `y` into `x` by name, or remove elements from `x` by name. Works for vectors, lists, environments and data frames and data tables. Objects with reference semantic (`environment()` and `data.table::data.table()`) might be modified in-place.

### Usage

    insert_named(x, y)

    ## Default S3 method:
    insert_named(x, y)

    ## S3 method for class 'environment'
    insert_named(x, y)

    ## S3 method for class 'data.frame'
    insert_named(x, y)

    ## S3 method for class 'data.table'
    insert_named(x, y)

    remove_named(x, nn)

    ## S3 method for class 'environment'
    remove_named(x, nn)

    ## S3 method for class 'data.frame'
    remove_named(x, nn)

    ## S3 method for class 'data.table'
    remove_named(x, nn)

### Arguments

`x` | (`vector()` | `list()` | `environment()` | `data.table::data.table()`) Object to insert elements into, or remove elements from. Changes are by-reference for environments and data tables.
`y` | (`list()`) List of elements to insert into `x`.
`nn` | (`character()`) Character vector of elements to remove.

### Value

Modified object.

### Examples

    x = list(a = 1, b = 2)
    insert_named(x, list(b = 3, c = 4))
    remove_named(x, "b")

[Package mlr3misc version 0.10.0 Index]