uCalc API Version: 2.1.3-preview.2 Released: 6/17/2026

Warning

uCalc API Preview Release Notice:The documentation describes the intended behavior of the API. The current preview build contains incomplete features, unoptimized performance, and is subject to breaking changes.

CaseSensitive = [bool]

Property

Product: 

Transformer Library

Class: 

Rule

Gets or sets whether pattern matching for this specific rule is case-sensitive, overriding the transformer's default setting.

Remarks

The CaseSensitive property allows you to control the case-sensitivity for an individual Rule, overriding the global setting inherited from the parent Transformer.

By default, all pattern matching in uCalc is case-insensitive.

⚙️ Getter and Setter Behavior

This property functions as both a getter and a setter:

  • Getter: var isSensitive = myRule.CaseSensitive;Returns true if the rule is case-sensitive; otherwise, false.

  • Setter: myRule.CaseSensitive = true;Sets the case-sensitivity for the rule. The method returns the Rule object itself, allowing for a fluent, chainable syntax.

Overriding the Default

This setting provides granular, per-rule control. It overrides the default case-sensitivity behavior defined in the parent transformer's DefaultRuleSet. This allows you to create a transformer that is case-insensitive by default but contains a few specific rules that must match case exactly.

💡 Why uCalc? (Comparative Analysis)

In most traditional Regex engines, case-insensitivity is a global flag applied to the entire pattern at compile time (e.g., the /i flag in JavaScript or RegexOptions.IgnoreCase in .NET). This is often an all-or-nothing choice.

uCalc's key advantage is its granularity. It allows you to mix case-sensitive and case-insensitive rules within the same Transformer and have them operate concurrently. This is extremely powerful for parsing languages or data formats where keywords might be case-insensitive (SELECT, select), but string literals or identifiers are case-sensitive ("MyVar" vs. "myvar"). This per-rule control provides a level of precision that is difficult to achieve with standard Regex libraries.

Examples

CaseSensitive
				
					using uCalcSoftware;

var uc = new uCalc();
var t = uc.NewTransformer();
t.Str("start x y z finish, StArT a b c FinISH, START 1 2 3 FINISH");
var Pattern = t.Pattern("StArT {etc} FinISH");

Pattern.CaseSensitive = true;
Console.WriteLine($"CaseSensitive: {Pattern.CaseSensitive}");
Console.WriteLine("-------------------");
t.Find();
Console.WriteLine(t.Matches.Text);
Console.WriteLine("");

Pattern.CaseSensitive = false;
Console.WriteLine($"CaseSensitive: {Pattern.CaseSensitive}");
Console.WriteLine("--------------------");
t.Find();
Console.WriteLine(t.Matches.Text);
				
			
CaseSensitive: True
-------------------
StArT a b c FinISH

CaseSensitive: False
--------------------
start x y z finish
StArT a b c FinISH
START 1 2 3 FINISH
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

#define tf(IsTrue) ((IsTrue) ? "True" : "False")

int main() {
   uCalc uc;
   auto t = uc.NewTransformer();
   t.Str("start x y z finish, StArT a b c FinISH, START 1 2 3 FINISH");
   auto Pattern = t.Pattern("StArT {etc} FinISH");

   Pattern.CaseSensitive(true);
   cout << "CaseSensitive: " << tf(Pattern.CaseSensitive()) << endl;
   cout << "-------------------" << endl;
   t.Find();
   cout << t.Matches().Text() << endl;
   cout << "" << endl;

   Pattern.CaseSensitive(false);
   cout << "CaseSensitive: " << tf(Pattern.CaseSensitive()) << endl;
   cout << "--------------------" << endl;
   t.Find();
   cout << t.Matches().Text() << endl;
}
				
			
CaseSensitive: True
-------------------
StArT a b c FinISH

CaseSensitive: False
--------------------
start x y z finish
StArT a b c FinISH
START 1 2 3 FINISH
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t = uc.NewTransformer()
      t.Str("start x y z finish, StArT a b c FinISH, START 1 2 3 FINISH")
      Dim Pattern = t.Pattern("StArT {etc} FinISH")
      
      Pattern.CaseSensitive = true
      Console.WriteLine($"CaseSensitive: {Pattern.CaseSensitive}")
      Console.WriteLine("-------------------")
      t.Find()
      Console.WriteLine(t.Matches.Text)
      Console.WriteLine("")
      
      Pattern.CaseSensitive = false
      Console.WriteLine($"CaseSensitive: {Pattern.CaseSensitive}")
      Console.WriteLine("--------------------")
      t.Find()
      Console.WriteLine(t.Matches.Text)
   End Sub
End Module
				
			
CaseSensitive: True
-------------------
StArT a b c FinISH

CaseSensitive: False
--------------------
start x y z finish
StArT a b c FinISH
START 1 2 3 FINISH
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