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Local Atom Tables
An application can use a local atom table to efficiently manage a large number of strings used only within the
application. These strings, and the associated atoms, are available only to the
application that created the table.
An application requiring the same string in a number of structures can reduce
memory usage by using a local atom table. Rather than copying the string into
each structure, the application can place the string in the atom table and
include the resulting atom in the structures. In this way, a string appears only
once in memory but can be used many times in the application.
Applications can also use local atom tables to save time when searching for a
particular string. To perform a search, an application need only place the
search string in the atom table and compare the resulting atom with the atoms in
the relevant structures. Comparing atoms is typically faster than comparing
strings.
By default, a local atom table can contain up to 37 entries. However, the size
of a local atom table, unlike the size of a global atom table, can be changed.
An application uses the InitAtomTable function to accomplish this task. If the application calls InitAtomTable, however, it must do so before calling any other atom-management functions.
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