Added -all method to NSArray and NSSet

Classes/NSArray+ObjectiveSugar.h

@@ -148,6 +148,21 @@
  */
 - (NSArray *)reject:(BOOL (^)(id object))block;
 
+/**
+ Iterate through current array and evaluate the condition on each element
+
+ @param A block that returns YES/NO
+ */
+
+- (BOOL)all:(BOOL (^)(id object))condition;
+
+/**
+ Iterate through the current array and return true if element matches the condition given in the block
+
+ @param A block that returns YES/NO
+ */
+
+-(BOOL)any:(BOOL(^)(id object))condition;
 /**
  Recurse through self checking for NSArrays and extract all elements into one single array
 

Classes/NSArray+ObjectiveSugar.m

@@ -135,6 +135,24 @@ - (NSArray *)select:(BOOL (^)(id object))block {
     return array;
 }
 
+-(BOOL)all:(BOOL (^)(id))condition {
+
+    for (id object in self) {
+        if (!condition(object)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+-(BOOL)any:(BOOL (^)(id))condition {
+    for (id object in self) {
+        if (condition(object)) {
+            return true;
+        }
+    }
+    return false;
+}
 - (id)detect:(BOOL (^)(id object))block {
 
     for (id object in self) {

Classes/NSSet+ObjectiveSugar.h

@@ -20,7 +20,8 @@
 - (NSArray *)select:(BOOL (^)(id object))block;
 - (NSArray *)reject:(BOOL (^)(id object))block;
 - (NSArray *)map:(id (^)(id object))block;
-
+- (BOOL)all:(BOOL (^)(id object))condition;
+- (BOOL)any:(BOOL (^)(id object))condition;
 - (NSArray *)sort;
 
 @end

Classes/NSSet+ObjectiveSugar.m

@@ -64,6 +64,26 @@ - (NSArray *)select:(BOOL (^)(id object))block {
     return array;
 }
 
+-(BOOL)all:(BOOL (^)(id))condition {
+
+    for (id object in self) {
+        if (!condition(object)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+-(BOOL)any:(BOOL (^)(id))condition {
+
+    for (id object in self) {
+        if (condition(object)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 - (NSArray *)reject:(BOOL (^)(id object))block {
     NSMutableArray *array = [NSMutableArray arrayWithCapacity:self.count];
 

Example/ObjectiveSugarTests/NSArrayCategoriesTests.m

@@ -40,6 +40,7 @@
         [emptyArray.sample shouldBeNil];
     });
 
+
     context(@"Iterating using block", ^{
 
         it(@"iterates using -each:^", ^{
@@ -97,7 +98,12 @@
             return [object integerValue] % 3 == 0;
         }] should] equal:@[ @3, @6, @9 ]];
     });
-
+    it(@"-all returns true if all elements match the condition in the block", ^{
+        [[@([sampleArray all:^BOOL(id object) {
+            return object!=nil;
+        }]) should] equal:@(YES)];
+    });
+
     it(@"-detect returns the first element in NSArray for which block is true", ^{
         [[[oneToTen detect:^BOOL(id object) {
             return [object intValue] % 3 == 0;

Example/ObjectiveSugarTests/NSSetTests.m

@@ -36,7 +36,11 @@
             }];
             [[duplicate should] beEmpty];
         });
-
+        it(@"-all returns true if all elements match the condition in the block", ^{
+            [[@([sampleSet all:^BOOL(id object) {
+                return object!=nil;
+            }]) should] equal:@(YES)];
+        });
     });
 
     context(@"first, last, sample", ^{