jparise

NSString * NSStringFromIndexSet(NSIndexSet *indexSet) {
    NSMutableString *string = nil;

    NSRange range = NSMakeRange([indexSet firstIndex], 1);
    while (range.location != NSNotFound) {
        NSUInteger nextIndex = [indexSet indexGreaterThanIndex:range.location];
        while (nextIndex == range.location + range.length) {
            range.length++;
            nextIndex = [indexSet indexGreaterThanIndex:nextIndex];
        }

jparise

#import <Foundation/NSArray.h>

@interface NSArray (Predicates)

- (NSArray *)arrayOfObjectsPassingTest:(BOOL (^)(id obj, NSUInteger idx, BOOL *stop))predicate;
- (NSArray *)arrayOfObjectsWithOptions:(NSEnumerationOptions)opts passingTest:(BOOL (^)(id obj, NSUInteger idx, BOOL *stop))predicate;

@end

jparise

class ClassAttribute(object):
    """Class attributes can only be accessed via class type objects.

    Attempting to access the attribute via an instance of the class will
    result in an AttributeError.
    """

    __slots__ = ('attr',)

    def __init__(self, attr):

jparise

def merge_dicts(d1, d2):
    """Safely merges the contents of the dictionary d2 into dictionary d1.

    Unlike dict.update(), this is a non-destructive operation: a KeyError is
    raised if one of d2's keys already exists in d1.
    """
    # Based on timing tests, it's faster to scan for conflicts upfront and
    # then perform a bulk update.  This presumes that, generally speaking,
    # the destination dictionary d1 will be larger (in item count) than d2.
    for key in d2.iterkeys():