docs/Writerside/topics/map.h.md

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20 The map will store items of size `itemsize`. 20 The map will store items of size `itemsize`.
21 You can use the `CX_STORE_POINTERS` macro for `itemsize` to indicate that the map shall store 21 You can use the `CX_STORE_POINTERS` macro for `itemsize` to indicate that the map shall store
22 pointers instead of actual items. 22 pointers instead of actual items.
23 23
24 If you pass zero for the number of `buckets`, or use `cxHashMapSimple()`, 24 If you pass zero for the number of `buckets`, or use `cxHashMapSimple()`,
25 the map is initialized with a default of 16 buckets, otherwise the specified number of buckets is allocated. 25 the map is initialized with a default of 16 buckets; otherwise the specified number of buckets is allocated.
26 26
27 > If you want to lazy-initialize maps, you can use the global `cxEmptyMap` symbol as a placeholder instead of using a `NULL`-pointer. 27 > If you want to lazy-initialize maps, you can use the global `cxEmptyMap` symbol as a placeholder instead of using a `NULL`-pointer.
28 > While you *must not* insert elements into that map, you can safely access this map or create iterators. 28 > While you *must not* insert elements into that map, you can safely access this map or create iterators.
29 > This allows you to write clean code without checking for `NULL`-pointer everywhere. 29 > This allows you to write clean code without checking for `NULL`-pointer everywhere.
30 > You still need to make sure that the placeholder is replaced with an actual map before inserting elements. 30 > You still need to make sure that the placeholder is replaced with an actual map before inserting elements.
78 78
79 The above example illustrates basic operations with a map. 79 The above example illustrates basic operations with a map.
80 80
81 In the first part we add several entries to the map. 81 In the first part we add several entries to the map.
82 Then the example shows retrieval, updating, and removal of information. 82 Then the example shows retrieval, updating, and removal of information.
83 The last part shows how to iterate over the pairs of the map and how to recover the string from the key. 83 The last part shows how to iterate over the pairs inside the map and how to recover the string from the key.
84 84
85 In real-world situations, however, it is quite unlikely that you will use a map to store string literals. 85 In real-world situations, however, it is quite unlikely that you will use a map to store string literals.
86 The next example shows a more realistic program, where it is necessary to store strings based on user input. 86 The next example shows a more realistic program, where it is necessary to store strings based on user input.
87 87
88 ```C 88 ```C

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