TypeHelper

The Type Helper Codeunit (Codeunit 10) is one of the most powerful hidden gems in the Microsoft Dynamics 365 Business Central base application.

While most AL developers know it for basic string manipulations, it contains dozens of robust, built-in utility functions. Utilizing these tools prevents you from writing hand-rolled, buggy code for problems Microsoft has already solved.

Below are the top 5 hidden features of the Type Helper Codeunit you should start using today. 1. Locale-Aware Data Evaluation

Parsing external files like international CSVs often breaks due to regional formatting differences. Instead of writing custom text-parsing logic for dates or decimals, use the Evaluate method.

How it works: Pass a target variant, the raw string, the format, and the specific CultureName (e.g., da-DK for Danish or en-US for US English).

The Benefit: It automatically handles regional date patterns and decimal separators seamlessly. 2. Built-In URL and HTML Encoding

Building integrations with external APIs often requires data serialization. Many developers mistakenly hardcode replacement characters or write custom encoding loops.

How it works: Type Helper features native methods like UrlEncode, UrlDecode, HtmlEncode, and JavaScriptStringEncode.

The Benefit: It ensures your API payloads and web service URIs are instantly compliant and safe without external libraries. 3. Bitwise Operations in AL

AL does not natively support bitwise operators like AND, OR, or XOR directly on integers. If you are dealing with binary flags or low-level file protocols, Type Helper bridges this gap.

How it works: Call BitwiseAnd, BitwiseOr, or BitwiseXor directly from the codeunit.

The Benefit: You can manage complex binary permission masks or status flags cleanly within standard AL logic. 4. Seamless Timezone Conversions

Handling UTC data from webhooks while displaying the correct local time to a user is notoriously difficult. Type Helper streamlines this math completely.

How it works: Functions like ConvertDateTimeFromUTCToTimeZone and GetInputDateTimeInUserTimeZone do the heavy lifting.

The Benefit: It automatically factors in the user’s specific regional client offset and daylight saving adjustments. 5. String Distance Calculations (Levenshtein Distance)

Building search features or data-cleansing routines usually requires finding “fuzzy” matches for names or addresses.

How it works: The TextDistance method calculates the Levenshtein distance between two text strings.

The Benefit: It returns an integer representing the number of single-character edits required to change one word into another, making data deduplication simple.

If you want, I can provide copy-and-paste AL code snippets for any of these features or help you integrate them into your current Business Central extension. Let me know which feature you want to see in action! TypeHelper to the rescue! – hougaard.com