Examples: String Utils

Evaluate a string with multiple elements

We want to evaluate a ticket description with multiple STARTS_WITH, but you do not want to write multiple OR operators in your rule that could make it bulky and hard to read, we can leverage the ANY The stream operator will match our ticket with a list of strings or elements.

You can also leverage the ALL operator in case you want AND conditions

Given:

list_of_prefixes = ["Mr.", "Mrs.", "Dr."]

ticket.requestor.name = "Dr. Jane Doe"

To check against all prefixes

list_of_prefixes.$ANY(prefix => ticket.requestor.name.$STARTS_WITH(prefix))

# OR

["Mr.", "Mrs.", "Dr."].$ANY(prefix => ticket.requestor.name.$STARTS_WITH(prefix))

Expected Result:

true

String Special Character Detection

Check if a string contains any characters that are not alphabetic letters or whitespace.

DSL Explanation

text.$MATCH("[^a-zA-Z\\s]+", true).$LENGTH() > 0

This DSL:

• Searches for one or more consecutive non-letter, non-whitespace characters
• Returns true if any numbers or special characters are found
• Returns false if the string contains only letters and whitespace

Use Cases

• Form validation to ensure text fields contain only alphabetic characters
• Identifying inputs that might require special handling or escaping
• Security checks for potentially unsafe character sequences

Examples

• "Hello world" → false (contains only letters and spaces)
• "Hello123" → true (contains numbers)
• "Hello!" → true (contains special characters)
• "Hello world!" → true (contains special characters)

Make all elements in a list lowercase

We usually create whitelists for users that want to test a certain skill or sometimes remove access to a list of people, we would want to evaluate all users in lowercase since sometimes emails or other attributes may contain capital letters. A way to lowercase an element is by using the .$LOWERCASE() formatter but it’s not scalable or pretty too look at if you have a list of 100s of users. Here’s how you can do it better.

Given:

emails = ["HeLlo", "WoRld"]

To lowercase all elements:

emails.$MAP(email => email.$LOWERCASE())

# or

["HeLlo", "WoRld"].$MAP(email => email.$LOWERCASE())

Expected Result:

["hello", "world"]

Generate a hyphenated "Random" Number

This expression creates a pseudo-random number string formatted as a hyphen-separated sequence.

$CONCAT([($TIME().$INTEGER() * 6).$TEXT()[7:12], ($TIME().$INTEGER() * 12).$TEXT()[7:12],($TIME().$INTEGER() * 7).$TEXT()[7:12],($TIME().$INTEGER() * 23).$TEXT()[7:12]],"-")

This DSL:

• Uses the current timestamp ($TIME().$INTEGER()) as a seed value
• Multiplies by different prime-like numbers (6, 12, 7, 23) to create variation
• Converts results to text and extracts specific digits using substring selection [7:12]
• Concatenates the four number segments with hyphens as separators

How It Works

1. $TIME().$INTEGER() gets the current Unix timestamp in milliseconds
2. Multiplication by different factors produces varied number sequences
3. .$TEXT()[7:12] converts to text and extracts a consistent 4-digit segment
4. $CONCAT(..., "-") joins the segments with hyphens

Example Output

"3542-7084-5799-1911"

Use Cases

• Generating reference numbers or transaction IDs
• Creating pseudo-random identifiers without requiring cryptographic security
• Producing readable, hyphenated codes for display purposes

Notes

• Not cryptographically secure - uses deterministic operations on time values
• Will produce different values on each evaluation as time changes
• Consistent format with four 4-digit segments separated by hyphens