January 2020
Intermediate to advanced
532 pages
13h 31m
English
Content preview from Hands-On Design Patterns and Best Practices with Julia
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The flyweight pattern
The flyweight pattern is used to handle a large number of fine-grained objects efficiently by sharing memory for similar/same objects.
A good example of this involves handling strings. In the field of data science, we frequently need to read and analyze a large amount of data that is represented in a tabular format. In many cases, certain columns may contain a large number of strings that are just repeated values. For example, a population survey might have a column stating gender, and so it will contain either Male or Female.
Unlike some other programming languages, strings are not interned in Julia. This means that 10 copies of the word Male are going to be stored repeatedly, occupying 10 times the memory space that ...
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