Function compare 

pub fn compare(version1: &str, operator: &str, version2: &str) -> Result<bool>

Compare two versions using the specified operator.

Arguments

• version1 - First version string (will be normalized)
• operator - Comparison operator (“>”, “>=”, “<”, “<=”, “==”, “=”, “!=”, “<>”)
• version2 - Second version string (will be normalized)

Returns

true if the comparison holds, false otherwise.

Errors

Returns an error if either version string is invalid.