[NBKCoreKit] Namespace aliases (#85).

Sources/NBKCoreKit/Private/NBK.swift

@@ -64,3 +64,51 @@
     /// An integer split into three parts.
     public typealias Wide3<T> = (high: T, mid: T.Magnitude, low: T.Magnitude) where T: NBKFixedWidthInteger
 }
+
+//*============================================================================*
+// MARK: * NBK x Namespaces x Aliases
+//*============================================================================*
+// NOTE: * Package level access control does not exist in Swift 5.7.
+//=----------------------------------------------------------------------------=
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SBI<Base> =  NBK.StrictBinaryInteger<Base> where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SBISS<Base>  = NBK.StrictBinaryInteger<Base>.SubSequence where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SSI<Base> =  NBK.StrictSignedInteger<Base> where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SSISS<Base>  = NBK.StrictSignedInteger<Base>.SubSequence where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SUI<Base> =  NBK.StrictUnsignedInteger<Base> where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger
+
+/// A namespace for `Numberick` development.
+///
+/// - Warning: Do not use this namespace outside of `Numberick` development.
+///
+public typealias SUISS<Base>  = NBK.StrictUnsignedInteger<Base>.SubSequence where
+Base: RandomAccessCollection, Base.Element: NBKCoreInteger & NBKUnsignedInteger

Sources/NBKCoreKit/Private/NBKStrictUnsignedInteger+Addition.swift

@@ -275,8 +275,8 @@ extension NBK.StrictUnsignedInteger.SubSequence where Base: MutableCollection {
     ///
     @inlinable public static func incrementInIntersection(
     _ base: inout Base, by elements: some Collection<Base.Element>, plus bit: inout Bool, at index: inout Base.Index) {
-        for elementIndex in elements.indices {
-            self.incrementInIntersection(&base, by: elements[elementIndex], plus: &bit, at: &index)
+        for elementsIndex in elements.indices {
+            self.incrementInIntersection(&base, by: elements[elementsIndex], plus: &bit, at: &index)
         }
     }
 }

Sources/NBKDoubleWidthKit/NBKDoubleWidth+Multiplication+Digit.swift

@@ -128,7 +128,7 @@ extension NBKDoubleWidth where High == High.Magnitude {
     /// - Note: The `high` and `low` parts contain the entire `overflow` from `low` to `high`.
     ///
     @_disfavoredOverload @inlinable public mutating func multiplyFullWidth(by other: Digit, add carry: Digit) -> Digit {
-        SBI.Unsigned.SubSequence.multiplyFullWidth(&self, by: other, add: carry)
+        SUISS.multiplyFullWidth(&self, by: other, add: carry)
     }
 
     /// Returns the `low` and `high` parts of multiplication and addition.

Sources/NBKDoubleWidthKit/NBKDoubleWidth.swift

@@ -106,9 +106,6 @@ High: NBKFixedWidthInteger,  High.Digit: NBKCoreInteger<UInt> {
     /// The bit pattern of this type.
     public typealias BitPattern = NBKDoubleWidth<High.Magnitude>
 
-    /// The namespace with appropriate algorithms for this type.
-    @usableFromInline typealias SBI = NBK.StrictBinaryInteger<Self>
-
     //=------------------------------------------------------------------------=
     // MARK: Accessors
     //=------------------------------------------------------------------------=