contains

The contains function is a Boolean expression in which a specified collection of values is searched for a given single value. If the single value is found within the collection, contains evaluates to "true." If it is not found, contains evaluates to false. The notContains tag is the opposite: if the value is found, it evaluates to "false." If it is not found, it evaluates to "true." Both functions work anywhere Perl is accepted.

Syntax

contains

contains(item to match,collection to check against)

notContains

notContains(item to match,collection to check against)

Examples

Check option IDs

See demo See code Restart demo

Strings

Strings can also be used as inputs, but they must be surrounded by single quotes.

See demo See code Restart demo

In selection weighting

A primary use of contains and notContains is with selectby: weight variables. In such cases, certain arbitrary options might need higher weights than other options.

See demo See code Restart demo

Q2SEL will always select 'Primary Brand', if available, followed by 'Secondary Brands'.