![]() ![]() And the case of the key is not changed if a subsequent assignment uses a different case for the key. While a UTF-16 string can be compared to a UTF-8 function in your code, they will provide different hashes when working with dictionaries.Īlthough the keys are case-insensitive, the case of the key is remembered. However, non-ASCII characters such as "é" and "É" are not treated as identical in dictionary keys, even though they are equal in a direct string comparison. The characters "a" and "A" are treated as identical in dictionary keys because of a case-insensitive hashing function. The only exception to this rule is with regard to string case. Because of this, string keys need to match exactly otherwise the dictionary will not consider them equal. The Pair class has only the two properties that contain the values of the pair.ĭictionaries use hashes for their lookup functions. It doesn’t do important checking like seeing if a dictionary key exists or if the array is not empty: codedim slug, name as text dim d, e as dim a(), b() as auto dim id as integer. The Pair class stores the key-value items in its Left and Right properties and an array of pairs can be set up as a linked list. It’s looking for the items in the first category array for id 35. The Pair class also stores key-value items. When you assign a value to a key that is already in the Dictionary, the new value replaces the old one On the other hand, the Collection can store multiple values per key. Also, the key parameter in a Dictionary is a Variant, but is a String in the Collection class, giving you greater flexibility. The DictionaryEntry class represents a single key-value pair in a Dictionary. A Dictionary uses a hash table, making the time (relatively) independent of the number of items. The Dictionary class provides the functionality of the Collection class and offers several advantages: With the Collection class, the time taken to locate an item is a function of the number of items in the Collection because the search is sequential. PropertiesĬonstructor(ke圜omparison As Ke圜omparisonDelegate)įor iOS projects refer to the Dictionary-related classes in Xojo.Core: ![]() ASCII String keys are case-insensitive, but non-ASCII String keys can be case-sensitive. ![]() constants to ensure you only use this class where it is supported.Īn object that contains a list of key-value pairs. This class is supported on Desktop, Web, Console. ![]()
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