str_subset_ops: String Subsetting Operators

In tinycodet: Functions to Help in your Coding Etiquette

String Subsetting Operators

Description

String subsetting operators.

The x %s><% ss operator gets a certain number of the first and last characters of every string in character vector x.
%sget% is an alias for %s><%.

The x %s<>% ss operator trims a certain number of the first and last characters of every string in character vector x.
%strim% is an alias for %<>%.

Usage

x %s><% ss

x %s<>% ss

x %sget% ss

x %strim% ss

Arguments

x

a character vector.

ss

a vector of length 2, or a matrix with 2 columns with nrow(ss) == length(x). The object ss should consist entirely of non-negative and non-missing integers, or be coerce-able to such integers. (thus negative integers, and missing values are not allowed; decimal numbers will be converted to integers). The first element/column of ss gives the number of characters counting from the left side to be extracted/removed from x. The second element/column of ss gives the number of characters counting from the right side to be extracted/removed from x.

Details

These operators serve as a way to provide straight-forward string sub-setting.

Value

Both operators return a character vector of the same length as x.

The x %s><% ss operator gives a certain number of the first and last characters of each string in the input character vector x.

The x %s<>% ss operator removes a certain number of the first and last characters of each string in the input character vector x.

See Also

tinycodet_strings

Examples

x <- c(paste0(letters[1:13], collapse = ""),
       paste0(letters[14:26], collapse = ""))
print(x)
ss <- c(2, 3)
x %s><% ss

x <- c(paste0(letters[1:13], collapse = ""),
       paste0(letters[14:26], collapse = ""))
print(x)
ss <- c(1, 0)
x %s><% ss

x <- c(paste0(letters[1:13], collapse = ""),
       paste0(letters[14:26], collapse = ""))
print(x)
ss <- c(2, 3)
x %s<>% ss

x <- c(paste0(letters[1:13], collapse = ""),
       paste0(letters[14:26], collapse = ""))
print(x)
ss <- c(1, 0)
x %s<>% ss

tinycodet documentation built on April 12, 2025, 1:39 a.m.