coalesce
function, since version 1.0.0
categories: conditionals
coalesce(a, b, c,…)
This is variadic function - you can pass as many parameters as you want. All parameters have the same type. Function returns the first non-empty parameter
examples
Following expression will return product description. If description is empty, then it returns long description. If long description is empty as well, it returns constant string no description
coalesce(product.description, product.longDescription, 'no description')