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cheat-sheet.txt
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NSArray:
+ (instancetype)array;
+ (instancetype)arrayWithObject:(ObjectType)anObject;
+ (instancetype)arrayWithArray:(NSArray<ObjectType> *)array;
+ (instancetype)arrayWithObjects:(ObjectType)firstObj, ...;
+ (instancetype)arrayWithObjects:(const ObjectType _Nonnull [])objects count:(NSUInteger)cnt;
- (instancetype)initWithArray:(NSArray<ObjectType> *)array
copyItems:(BOOL)flag;
- (BOOL)isEqualToArray:(NSArray<ObjectType> *)otherArray;
- (BOOL)containsObject:(ObjectType)anObject;
- (ObjectType)objectAtIndex:(NSUInteger)index;
- (NSUInteger)indexOfObject:(ObjectType)anObject;
- (NSUInteger/NSIndexSet *)index(es)OfObject(s)PassingTest:(BOOL (^)(ObjectType obj, NSUInteger idx, BOOL *stop))predicate;
- (NSUInteger)indexOfObject:(ObjectType)obj
inSortedRange:(NSRange)r
options:(NSBinarySearchingOptions/NSBinarySearchingInsertionIndex)opts
usingComparator:(NSComparator)cmp;
- (NSEnumerator<ObjectType> *)objectEnumerator;
- (NSEnumerator<ObjectType> *)reverseObjectEnumerator;
- (void)enumerateObjectsUsingBlock:(void (^)(ObjectType obj, NSUInteger idx, BOOL *stop))block;
-(void)enumerateObjectsWithOptions:(NSEnumerationOptions/NSEnumerationReverse)opts usingBlock:(void (^)(ObjectType obj, NSUInteger idx, BOOL *stop))block;
- (NSArray<ObjectType> *)arrayByAddingObject:(ObjectType)anObject;
- (NSArray<ObjectType> *)arrayByAddingObjectsFromArray:(NSArray<ObjectType> *)otherArray;
- (NSArray<ObjectType> *)sortedArrayUsingDescriptors:(NSArray<NSSortDescriptor *> *)sortDescriptors;
- (NSArray<ObjectType> *)sortedArrayUsingSelector:(SEL)comparator;
- (NSArray<ObjectType> *)sortedArrayUsingComparator:(NSComparator)cmptr;
- (NSString *)componentsJoinedByString:(NSString *)separator;
NSMutableArray:
- (void)addObject:(ObjectType)anObject;
- (void)addObjectsFromArray:(NSArray<ObjectType> *)otherArray;
- (void)insertObject:(ObjectType)anObject
atIndex:(NSUInteger)index;
- (void)removeAllObjects;
- (void)removeLastObject;
- (void)removeObject:(ObjectType)anObject;
- (void)removeObjectAtIndex:(NSUInteger)index;
- (void)removeObjectsInRange:(NSRange)range;
- (void)removeObjectsInArray:(NSArray<ObjectType> *)otherArray;
- (void)replaceObjectAtIndex:(NSUInteger)index
withObject:(ObjectType)anObject;
- (void)exchangeObjectAtIndex:(NSUInteger)idx1
withObjectAtIndex:(NSUInteger)idx2;
- (void)sortUsingDescriptors:(NSArray<NSSortDescriptor *> *)sortDescriptors;
- (void)sortUsingComparator:(NSComparator)cmptr;
NSDictionary:
+ (instancetype)dictionaryWithDictionary:(NSDictionary<KeyType,ObjectType> *)dict;
@property(readonly) NSUInteger count;
@property(readonly, copy) NSArray<KeyType> *allKeys;
@property(readonly, copy) NSArray<ObjectType> *allValues;
- (void)enumerateKeysAndObjectsUsingBlock:(void (^)(KeyType key, ObjectType obj, BOOL *stop))block;
- (void)enumerateKeysAndObjectsWithOptions:(NSEnumerationOptions)opts
usingBlock:(void (^)(KeyType key, ObjectType obj, BOOL *stop))block;
- (NSArray<KeyType> *)keysSortedByValueUsingSelector:(SEL)comparator;
- (NSArray<KeyType> *)keysSortedByValueUsingComparator:(NSComparator)cmptr;
- (NSSet<KeyType> *)keysOfEntriesPassingTest:(BOOL (^)(KeyType key, ObjectType obj, BOOL *stop))predicate;
- (NSSet<KeyType> *)keysOfEntriesWithOptions:(NSEnumerationOptions)opts
passingTest:(BOOL (^)(KeyType key, ObjectType obj, BOOL *stop))predicate;
// fast enumeration for dictionary
for (key in someDictionary){
NSLog(@"Key: %@, Value %@", key, [someDictionary objectForKey: key]);
}
- (BOOL)isEqualToDictionary:(NSDictionary<KeyType,ObjectType> *)otherDictionary;
NSMutableDictionary:
- (void)addEntriesFromDictionary:(NSDictionary<KeyType,ObjectType> *)otherDictionary;
- (void)removeObjectForKey:(KeyType)aKey;
- (void)removeObjectsForKeys:(NSArray<KeyType> *)keyArray;
- (void)removeAllObjects;
NSSortDescriptor:
+ (instancetype)sortDescriptorWithKey:(NSString *)key
ascending:(BOOL)ascending;
+ (instancetype)sortDescriptorWithKey:(NSString *)key
ascending:(BOOL)ascending
selector:(SEL)selector;
+ (instancetype)sortDescriptorWithKey:(NSString *)key
ascending:(BOOL)ascending
comparator:(NSComparator)cmptr;
NSComparator:
typedef NSComparisonResult (^NSComparator)(id obj1, id obj2)
NSComparisonResult:
NSOrderedAscending
NSOrderedSame
NSOrderedDescending
NSString:
+ (instancetype)string;
+ (instancetype)stringWithUTF8String:(const char *)nullTerminatedCString;
+ (instancetype)stringWithFormat:(NSString *)format, ...;
+ (instancetype)stringWithString:(NSString *)string;
@property(readonly) NSUInteger length;
- (unichar)characterAtIndex:(NSUInteger)index;
@property(readonly) const char *UTF8String;
- (BOOL)hasPrefix:(NSString *)str;
- (BOOL)hasSuffix:(NSString *)str;
- (BOOL)isEqualToString:(NSString *)aString;
- (NSString *)stringByAppendingFormat:(NSString *)format, ...;
- (NSString *)stringByAppendingString:(NSString *)aString;
- (NSArray<NSString *> *)componentsSeparatedByString:(NSString *)separator;
- (NSArray<NSString *> *)componentsSeparatedByCharactersInSet:(NSCharacterSet *)separator;
- (NSString *)stringByTrimmingCharactersInSet:(NSCharacterSet *)set;
- (NSString *)substringFromIndex:(NSUInteger)from;
- (NSString *)substringWithRange:(NSRange)range;
- (NSString *)substringToIndex:(NSUInteger)to;
- (BOOL)containsString:(NSString *)str;
- (void)enumerateLinesUsingBlock:(void (^)(NSString *line, BOOL *stop))block;
- (void)enumerateSubstringsInRange:(NSRange)range
options:(NSStringEnumerationOptions)opts
usingBlock:(void (^)(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop))block;
@property(readonly, copy) NSString *lowercaseString;
@property(readonly, copy) NSString *uppercaseString;
doubleValue
floatValue
intValue
integerValue
longLongValue
boolValue
NSMutableString:
- (void)appendFormat:(NSString *)format, ...;
- (void)appendString:(NSString *)aString;
- (void)deleteCharactersInRange:(NSRange)range;
- (void)insertString:(NSString *)aString
atIndex:(NSUInteger)loc;
- (NSUInteger)replaceOccurrencesOfString:(NSString *)target
withString:(NSString *)replacement
range:(NSRange)searchRange;
NSStringEnumerationOptions:
NSStringEnumerationByLines
NSStringEnumerationByParagraphs
NSStringEnumerationByComposedCharacterSequences
NSStringEnumerationByWords
NSStringEnumerationBySentences
NSStringEnumerationReverse
NSStringEnumerationSubstringNotRequired
NSStringEnumerationLocalized
NSSet:
+ (instancetype)setWithArray:(NSArray<ObjectType> *)array;
- (NSSet<ObjectType> *)setByAddingObject:(ObjectType)anObject;
- (NSSet<ObjectType> *)setByAddingObjectsFromSet:(NSSet<ObjectType> *)other;
- (NSSet<ObjectType> *)setByAddingObjectsFromArray:(NSArray<ObjectType> *)other;
@property(readonly) NSUInteger count;
@property(readonly, copy) NSArray<ObjectType> *allObjects;
- (BOOL)containsObject:(ObjectType)anObject;
- (ObjectType)member:(ObjectType)object;
- (void)enumerateObjects###WithOptions:(NSEnumerationOptions/NSEnumerationReverse)opts###
usingBlock:(void (^)(ObjectType obj, BOOL *stop))block;
- (NSSet<ObjectType> *)objects###WithOptions:(NSEnumerationOptions)opts###
passingTest:(BOOL (^)(ObjectType obj, BOOL *stop))predicate;
- (BOOL)intersectsSet:(NSSet<ObjectType> *)otherSet;
- (BOOL)isEqualToSet:(NSSet<ObjectType> *)otherSet;
- (NSArray<ObjectType> *)sortedArrayUsingDescriptors:(NSArray<NSSortDescriptor *> *)sortDescriptors;
NSMutableSet:
- (void)addObject:(ObjectType)object;
- (void)removeObject:(ObjectType)object;
- (void)removeAllObjects;
- (void)addObjectsFromArray:(NSArray<ObjectType> *)array;
- unionSet:
- minusSet:
- intersectSet:
NSCountedSet:
- (void)addObject:(ObjectType)object;
- (void)removeObject:(ObjectType)object;
- (NSUInteger)countForObject:(ObjectType)object;
NSOrderedSet:
+ (instancetype)orderedSet;
+ (instancetype)orderedSetWithArray:(NSArray<ObjectType> *)array;
+ (instancetype)orderedSetWithSet:(NSSet<ObjectType> *)set;
+ (instancetype)orderedSetWithSet:(NSSet<ObjectType> *)set
copyItems:(BOOL)flag;
@property(readonly) NSUInteger count;
- (BOOL)containsObject:(ObjectType)object;
- (void)enumerateObjectsUsingBlock:(void (^)(ObjectType obj, NSUInteger idx, BOOL *stop))block;
firstObject
lastObject
- (ObjectType)objectAtIndex:(NSUInteger)idx;
- (NSUInteger)indexOfObject:(ObjectType)object;
- (NSUInteger)indexOfObject:(ObjectType)object
inSortedRange:(NSRange)range
options:(NSBinarySearchingOptions)opts
usingComparator:(NSComparator)cmp;
@property(readonly, copy) NSOrderedSet<ObjectType> *reversedOrderedSet;
- (BOOL)isEqualToOrderedSet:(NSOrderedSet<ObjectType> *)other;
- (NSArray<ObjectType> *)sortedArrayUsingDescriptors:(NSArray<NSSortDescriptor *> *)sortDescriptors;
- (NSArray<ObjectType> *)sortedArrayUsingComparator:(NSComparator)cmptr;
@property(readonly, strong) NSArray<ObjectType> *array;
@property(readonly, strong) NSSet<ObjectType> *set;
NSNumber:
boolValue
doubleValue
floatValue
integerValue
unsignedIntegerValue
stringValue
- (NSComparisonResult)compare:(NSNumber *)otherNumber;
- (BOOL)isEqualToNumber:(NSNumber *)number;
UIView:
@property(nonatomic, readonly) UIView *superview;
@property(nonatomic, readonly, copy) NSArray<__kindof UIView *> *subviews;
- (void)exchangeSubviewAtIndex:(NSInteger)index1
withSubviewAtIndex:(NSInteger)index2;
NSDate:
+ (instancetype)date;
+ (instancetype)dateWithTimeIntervalSinceNow:(NSTimeInterval)secs;
+ (instancetype)dateWithTimeIntervalSince1970:(NSTimeInterval)secs;
@property(class, readonly, copy) NSDate *distantFuture;
@property(class, readonly, copy) NSDate *distantPast;
- (BOOL)isEqualToDate:(NSDate *)otherDate;
- (NSDate *)earlierDate:(NSDate *)anotherDate;
- (NSDate *)laterDate:(NSDate *)anotherDate;
- (NSComparisonResult)compare:(NSDate *)other;
@property(readonly) NSTimeInterval timeIntervalSinceNow;
- (instancetype)dateByAddingTimeInterval:(NSTimeInterval)ti;
NSScanner:
+ (instancetype)scannerWithString:(NSString *)string;
@property NSUInteger scanLocation;
@property BOOL caseSensitive;
@property(copy) NSCharacterSet *charactersToBeSkipped;
- (BOOL)scanInteger:(NSInteger *)result;
- (BOOL)scanString:(NSString *)string
intoString:(NSString * _Nullable *)result;
@property(getter=isAtEnd, readonly) BOOL atEnd;
NSValue:
+ (NSValue *)valueWithRange:(NSRange)range;
@property(readonly) NSRange rangeValue;
+ valueWithCGPoint:
+ valueWithCGVector:
+ valueWithCGSize:
+ valueWithCGRect:
CGPointValue
CGVectorValue
CGSizeValue
CGRectValue
Helpers:
NSStringFromClass
NSStringFromSelector
FOUNDATION_EXPORT NSString *NSStringFromCGPoint(NSPoint aPoint);
FOUNDATION_EXPORT NSString *NSStringFromCGSize(NSSize aSize);
FOUNDATION_EXPORT NSString *NSStringFromCGRect(NSRect aRect);
FOUNDATION_EXPORT NSPoint CGPointFromString(NSString *aString);
FOUNDATION_EXPORT NSSize CGSizeFromString(NSString *aString);
FOUNDATION_EXPORT NSRect CGRectFromString(NSString *aString);
NSCharacterSet
@property(readonly, class, copy) NSCharacterSet *alphanumericCharacterSet;
@property(readonly, class, copy) NSCharacterSet *lowercaseLetterCharacterSet;
@property(readonly, class, copy) NSCharacterSet *uppercaseLetterCharacterSet;
@property(readonly, class, copy) NSCharacterSet *whitespaceCharacterSet;
@property(readonly, class, copy) NSCharacterSet *whitespaceAndNewlineCharacterSet;
+ (NSCharacterSet *)characterSetWithCharactersInString:(NSString *)aString;
- (BOOL)characterIsMember:(unichar)aCharacter;