any_start_with: Tell if any of a vector of strings starts with another string

In MatthewHeun/Recca: R Energy Conversion Chain Analysis

Tell if any of a vector of strings starts with another string

Description

This function returns TRUE if any of the strings in x starts with the string in target and FALSE otherwise.

Usage

any_start_with(x, target)

Arguments

x	a vector or list of strings
target	a string (or a vector or list of strings)

Details

This function is vectorized. If target is a vector or list of strings, the return value is the same length as target and contains the result of applying the same test (do any of x start with target?) to each item in target.

Value

TRUE if any of x starts with target, FALSE otherwise. If target is a vector or list, the return value is the same length as target and contains the result of applying the test to each item in target.

Examples

# TRUE, because one of the x string ("bd") starts with "b"
any_start_with(x = c("ad", "bd", "cd"), target = "b")
# TRUE, because two of the x strings starts with "Production"
any_start_with(x = c("Production - Crude", "Production - NG", "Bogus"), target = "Production")
# FALSE, because none of the x strings starts with "Offshore"
any_start_with(x = c("Production - Crude", "Production - NG", "Bogus"), target = "Offshore")
# TRUE FALSE, because the x strings start with "Production" but not "Offshore"
any_start_with(x = c("Production - Crude", "Production - NG", "Bogus"),
               target = c("Production", "Offshore"))

MatthewHeun/Recca documentation built on Feb. 9, 2024, 6:18 p.m.