正在做入学测试，求贴下NSString类中的方法，我看看哪些方法可以用。

还有C++ STL中的list，在OC中叫什么？

不好意思，是：  （

你把里面的:(全部用  ： ）替换掉

@interface NSString (NSStringExtensionMethods)

- (void)getCharacters:(unichar *)buffer range:(NSRange)aRange;

- (NSString *)substringFromIndex:(NSUInteger)from;
- (NSString *)substringToIndex:(NSUInteger)to;
- (NSString *)substringWithRange:(NSRange)range;    // Hint: Use with rangeOfComposedCharacterSequencesForRange: to avoid breaking up composed characters

/* In the compare: methods, the range argument specifies the subrange, rather than the whole, of the receiver to use in the comparison. The range is not applied to the search string.  For example, [@"AB" compare:@"ABC" options:0 range:NSMakeRange(0,1)] compares "A" to "ABC", not "A" to "A", and will return NSOrderedAscending.
*/
- (NSComparisonResult)compare:(NSString *)string;
- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask;
- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange;
- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange locale:(id)locale; // locale arg used to be a dictionary pre-Leopard. We now accept NSLocale. Assumes the current locale if non-nil and non-NSLocale. nil continues to mean canonical compare, which doesn't depend on user's locale choice.
- (NSComparisonResult)caseInsensitiveCompare:(NSString *)string;
- (NSComparisonResult)localizedCompare:(NSString *)string;
- (NSComparisonResult)localizedCaseInsensitiveCompare:(NSString *)string;

/* localizedStandardCompare:, added in 10.6, should be used whenever file names or other strings are presented in lists and tables where Finder-like sorting is appropriate.  The exact behavior of this method may be tweaked in future releases, and will be different under different localizations, so clients should not depend on the exact sorting order of the strings.
*/
- (NSComparisonResult)localizedStandardCompare:(NSString *)string NS_AVAILABLE(10_6, 4_0);

- (BOOL)isEqualToString:(NSString *)aString;

- (BOOL)hasPrefix:(NSString *)aString;
- (BOOL)hasSuffix:(NSString *)aString;

/* These methods return length==0 if the target string is not found. So, to check for containment: ([str rangeOfString:@"target"].length > 0).  Note that the length of the range returned by these methods might be different than the length of the target string, due composed characters and such.
*/
- (NSRange)rangeOfString:(NSString *)aString;
- (NSRange)rangeOfString:(NSString *)aString options:(NSStringCompareOptions)mask;
- (NSRange)rangeOfString:(NSString *)aString options:(NSStringCompareOptions)mask range:(NSRange)searchRange;
- (NSRange)rangeOfString:(NSString *)aString options:(NSStringCompareOptions)mask range:(NSRange)searchRange locale:(NSLocale *)locale NS_AVAILABLE(10_5, 2_0);

/* These return the range of the first character from the set in the string, not the range of a sequence of characters.
*/
- (NSRange)rangeOfCharacterFromSet:(NSCharacterSet *)aSet;
- (NSRange)rangeOfCharacterFromSet:(NSCharacterSet *)aSet options:(NSStringCompareOptions)mask;
- (NSRange)rangeOfCharacterFromSet:(NSCharacterSet *)aSet options:(NSStringCompareOptions)mask range:(NSRange)searchRange;

- (NSRange)rangeOfComposedCharacterSequenceAtIndex:(NSUInteger)index;
- (NSRange)rangeOfComposedCharacterSequencesForRange:(NSRange)range NS_AVAILABLE(10_5, 2_0);

- (NSString *)stringByAppendingString:(NSString *)aString;
- (NSString *)stringByAppendingFormat:(NSString *)format, ... NS_FORMAT_FUNCTION(1,2);

/* The following convenience methods all skip initial space characters (whitespaceSet) and ignore trailing characters. NSScanner can be used for more "exact" parsing of numbers.
*/
- (double)doubleValue;
- (float)floatValue;
- (int)intValue;
- (NSInteger)integerValue NS_AVAILABLE(10_5, 2_0);
- (long long)longLongValue NS_AVAILABLE(10_5, 2_0);
- (BOOL)boolValue NS_AVAILABLE(10_5, 2_0);  // Skips initial space characters (whitespaceSet), or optional -/+ sign followed by zeroes. Returns YES on encountering one of "Y", "y", "T", "t", or a digit 1-9. It ignores any trailing characters.

- (NSArray *)componentsSeparatedByString:(NSString *)separator;
- (NSArray *)componentsSeparatedByCharactersInSet:(NSCharacterSet *)separator NS_AVAILABLE(10_5, 2_0);

- (NSString *)commonPrefixWithString:(NSString *)aString options:(NSStringCompareOptions)mask;

/* The following three case methods perform the canonical (non-localized) mappings. They are suitable for programming operations that require stable results not depending on the user's locale preference.  For localized case mapping for strings presented to users, use their corresponding methods with locale argument below.
*/
- (NSString *)uppercaseString;
- (NSString *)lowercaseString;
- (NSString *)capitalizedString;

/* The following methods perform localized case mappings based on the locale specified. Passing nil indicates the canonical mapping.  For the user preference locale setting, specify +[NSLocale currentLocale].
*/
- (NSString *)uppercaseStringWithLocale:(NSLocale *)locale NS_AVAILABLE(10_8, 6_0);
- (NSString *)lowercaseStringWithLocale:(NSLocale *)locale NS_AVAILABLE(10_8, 6_0);
- (NSString *)capitalizedStringWithLocale:(NSLocale *)locale NS_AVAILABLE(10_8, 6_0);

- (NSString *)stringByTrimmingCharactersInSet:(NSCharacterSet *)set;
- (NSString *)stringByPaddingToLength:(NSUInteger)newLength withString:(NSString *)padString startingAtIndex:(NSUInteger)padIndex;

- (void)getLineStart:(NSUInteger *)startPtr end:(NSUInteger *)lineEndPtr contentsEnd:(NSUInteger *)contentsEndPtr forRange:(NSRange)range;
- (NSRange)lineRangeForRange:(NSRange)range;

- (void)getParagraphStart:(NSUInteger *)startPtr end:(NSUInteger *)parEndPtr contentsEnd:(NSUInteger *)contentsEndPtr forRange:(NSRange)range;
- (NSRange)paragraphRangeForRange:(NSRange)range;