Added Lots of Documentation

Added some nice to haves
Improved and Unified General Code Layout

MathKit/MPMathRules.m

@@ -8,14 +8,16 @@
 
 #import "MPMathRules.h"
 
-NSString *MPMathRulesMaximumOperatorChainLengthKey = @"MPMathRulesMaximumOperatorChainLengthKey";
-NSString *MPMathRulesMaximumOperatorChainLengthInMultiplicationKey = @"MPMathRulesMaximumOperatorChainLengthInMultiplicationKey";
+
 NSString *MPMathRulesIsUsingDegreesKey = @"MPMathRulesIsUsingDegreesKey";
 
+
+
 @implementation MPMathRules
 
 static MPMathRules *sharedRules;
 
+
 + (MPMathRules *)sharedRules
 {
     if (!sharedRules) {
@@ -24,6 +26,7 @@ static MPMathRules *sharedRules;
     return sharedRules;
 }
 
+
 - (instancetype)init
 {
     if (sharedRules) {
@@ -31,53 +34,21 @@ static MPMathRules *sharedRules;
     }
     self = [super init];
     if (self) {
-        _usingUserDefaultValues = YES;
-        NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
-        NSNumber *userDefaultsMaximumOperatorChainLength = [userDefaults objectForKey:MPMathRulesMaximumOperatorChainLengthKey];
-        NSNumber *userDefaultsMaximumOperatorChainLengthInMultiplication = [userDefaults objectForKey:MPMathRulesMaximumOperatorChainLengthInMultiplicationKey];
-        NSNumber *userDefaultsIsUsingDegrees = [userDefaults objectForKey:MPMathRulesIsUsingDegreesKey];
-        
-        _maximumOperatorChainLength = userDefaultsMaximumOperatorChainLength != nil ? userDefaultsMaximumOperatorChainLength.unsignedIntegerValue : 2;
-        _maximumOperatorChainLengthInMultiplication = userDefaultsMaximumOperatorChainLengthInMultiplication != nil ? userDefaultsMaximumOperatorChainLengthInMultiplication.unsignedIntegerValue : 1;
-        _isUsingDegrees = userDefaultsIsUsingDegrees.boolValue;
     }
     return self;
 }
 
-- (void)setUsingUserDefaultValues:(BOOL)usingUserDefaultValues
+
+- (BOOL)isUsingDegrees
 {
-    _usingUserDefaultValues = usingUserDefaultValues;
-    // Save the current values
-    self.maximumOperatorChainLength = self.maximumOperatorChainLength;
-    self.maximumOperatorChainLengthInMultiplication = self.maximumOperatorChainLengthInMultiplication;
-    self.isUsingDegrees = self.isUsingDegrees;
+    return [[NSUserDefaults standardUserDefaults] boolForKey:MPMathRulesIsUsingDegreesKey];
 }
 
-- (void)setMaximumOperatorChainLength:(NSUInteger)maximumOperatorChainLength
-{
-    _maximumOperatorChainLength = maximumOperatorChainLength;
-    if (self.isUsingUserDefaultValues) {
-        [[NSUserDefaults standardUserDefaults] setObject:@(maximumOperatorChainLength)
-                                                  forKey:MPMathRulesMaximumOperatorChainLengthKey];
-    }
-}
-
-- (void)setMaximumOperatorChainLengthInMultiplication:(NSUInteger)maximumOperatorChainLengthInMultiplication
-{
-    _maximumOperatorChainLengthInMultiplication = maximumOperatorChainLengthInMultiplication;
-    if (self.isUsingUserDefaultValues) {
-        [[NSUserDefaults standardUserDefaults] setObject:@(maximumOperatorChainLengthInMultiplication)
-                                                  forKey:MPMathRulesMaximumOperatorChainLengthInMultiplicationKey];
-    }
-}
 
 - (void)setIsUsingDegrees:(BOOL)isUsingDegrees
 {
-    _isUsingDegrees = isUsingDegrees;
-    if (self.isUsingUserDefaultValues) {
-        [[NSUserDefaults standardUserDefaults] setBool:isUsingDegrees
+    [[NSUserDefaults standardUserDefaults] setBool:isUsingDegrees
                                                 forKey:MPMathRulesIsUsingDegreesKey];
-    }
 }
 
 @end