Function fn_split 

pub fn fn_split(
    delimiter: impl Into<String>,
    source: impl Into<ExpString>,
) -> ExpString

Helper function to create a split expression

Returns an ExpString::Split expression representing a Fn::Split operation. Typically used with fn_select_string to extract specific elements.

Arguments

• delimiter - The delimiter to split on
• source - The source string to split

Examples

// Select first element from split result
let first = fn_select_string(0, vec![fn_split(",", "a,b,c")]);