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dictionaries    音标拼音: [d'ɪkʃən,ɛriz]
Dictionary \Dic"tion*a*ry\, n.; pl. {Dictionaries}. [Cf. F.
dictionnaire. See {Diction}.]
1. A book containing the words of a language, arranged
alphabetically, with explanations of their meanings; a
lexicon; a vocabulary; a wordbook.
[1913 Webster]

I applied myself to the perusal of our writers; and
noting whatever might be of use to ascertain or
illustrate any word or phrase, accumulated in time
the materials of a dictionary. --Johnson.
[1913 Webster]

2. Hence, a book containing the words belonging to any system
or province of knowledge, arranged alphabetically; as, a
dictionary of medicine or of botany; a biographical
dictionary.
[1913 Webster]


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  • python - Adding dictionaries together - Stack Overflow
    Here are quite a few ways to add dictionaries You can use Python3's dictionary unpacking feature: ndic = {**dic0, **dic1} Note that in the case of duplicates, values from later arguments are used This is also the case for the other examples listed here
  • Iterating over dictionaries using for loops - Stack Overflow
    It's not that key is a special word, but that dictionaries implement the iterator protocol You could do this in your class, e g see this question for how to build class iterators In the case of dictionaries, it's implemented at the C level The details are available in PEP 234 In particular, the section titled "Dictionary Iterators":
  • Quick Way to Implement Dictionary in C - Stack Overflow
    Section 6 6 of The C Programming Language presents a simple dictionary (hashtable) data structure I don't think a useful dictionary implementation could get any simpler than this
  • What is the true difference between a dictionary and a hash table?
    Besides hashtables, another common way to implement dictionaries is red-black trees Each method has its own pros and cons A red-black tree can always perform a lookup in O(log N) A hashtable can perform a lookup in O(1) time although that can degrade to O(N) depending on the input
  • How do you create a dictionary in Java? - Stack Overflow
    I am trying to implement a dictionary (as in the physical book) I have a list of words and their meanings What data structure type does Java provide to store a list of words and their meanin
  • python - How to index into a dictionary? - Stack Overflow
    Dictionaries are unordered in Python versions up to and including Python 3 6 If you do not care about the order of the entries and want to access the keys or values by index anyway, you can create a list of keys for a dictionary d using keys = list(d), and then access keys in the list by index keys[i], and the associated values with d[keys[i]]
  • dictionary - Merging dictionaries in C# - Stack Overflow
    What's the best way to merge 2 or more dictionaries (Dictionary lt;TKey, TValue gt;) in C#? (3 0 features like LINQ are fine) I'm thinking of a method signature along the lines of: public static
  • dictionary - Sentiment Analysis Dictionaries - Stack Overflow
    Arriving a bit late I'll just note that dictionaries have a limited contribution for sentiment analysis Some sentiment bearing sentences do not contain any "sentiment" word - e g "read the book" which could be positive in a book review while negative in a movie review
  • How to iterate through a list of dictionaries - Stack Overflow
    There are multiple ways to iterate through a list of dictionaries However, if you are into Pythonic code, consider the following ways, but first, let's use data_list instead of dataList because in Python snake_case is preferred over camelCase
  • dictionary - Unordered dict in python 3. 7 - Stack Overflow
    As of Python 3 6, for the CPython implementation of Python, dictionaries remember the order of items inserted This is considered an implementation detail in Python 3 6; you need to use OrderedDict if you want insertion ordering that's guaranteed across other implementations of Python





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