uCalc SDK Interactive Examples

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RaiseErrorOnDivideByZero

Raises an error in a callback using a customized message with ErrorRaiseMessage

Raises an error with a dynamic message if a validation check fails within a callback.

Raising an error in a callback with ErrorRaise

Raising floating point errors with FloatingPointErrorsToTrap

Recursive Nesting: Alternation -> Optional -> Alternation.

Registers a handler to log when division by zero occurs.

Renames the Cos function (which is in Radian) to CosR and defines Cos in Degrees

Replacement()

Replacing all horizontal whitespace with a visible underscore for debugging.

Replacing all platform-specific newlines with a generic visible tag.

Replacing double quotes with single quotes.

Retrieves a built-in token by its name and inspects its regex pattern.

Retrieves a double-precision value from a pointer, with and without formatting.

Retrieves a Tokens collection's parent uCalc instance and verifies its identity by reading a description.

Retrieves and displays the name of a built-in data type.

Retrieves the full definition string for a user-defined function.

Retrieves the generic message for a specific error code and compares it to the last error message.

Retrieves the primary alphanumeric token definition using `ByType`.

Retrieving the element count of an array and the parameter count of a function.

Retrieving the precedence levels of built-in arithmetic operators to compare their binding strength.

Retrieving the text of the first match found in a simple search.

Return and other type-specific versions of Return

Returning a pointer with ReturnPtr

Returning a string (from a callback)

Returning the data type of an expression

Returns Start and End positions of Transformer matches

Returns Start and End positions of Transformer matches

Returns the default list of tokens (index, description, name, regex) in a transformer

RewindOnChange

Rule Name

Rule NextOverload and Tag

Rule StartAfter()

Rule uCalc

RulePatternTransformer

Safely renames a variable without corrupting a string literal, demonstrating the Transformer's token-awareness.

Sample example

Searching for two different words in parallel.

Sets a data type as the default

Sets and retrieves a description for the main uCalc object.

Sets the default data type to `Int32` for implicit variable definitions.

SetScalar

Setting a token data type

Setting a variable value by pointer

Setting and retrieving a description for a single variable Item.

Setting default uCalc instance with uCalc.IsDefault(); also clearing all uCalc instances from default list

Setting uCalc default with uCalc.IsDefault()

Setting variables of any data type

Setting/retrieving default data type

Shows how a full reset clears all rules and input, allowing a transformer object to be reconfigured from a clean slate.

Shows how implicit conversions simplify using uCalc objects for text manipulation.

Shows how importing a comment token definition can prevent find-and-replace rules from incorrectly modifying text inside comments.

Shows how the constructor's context (default vs. specific instance) affects variable resolution during parsing.

Shows how to create overloaded functions that uCalc distinguishes based on parameter count and type.

Shows how to use WasModified to avoid an expensive operation, like saving to a file, if no changes were made during a data sanitization process.

Shows the creation of a uCalc.String and its use of a fluent, token-aware API to modify text in-place.

Shows the initial count of default instances upon application startup.

Shows the RAII pattern in C++ using a stack-allocated object and the `Owned()` method for automatic cleanup.

Simple alias