SbDict - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 4.0.0
Note : Coin

NAMESbDict − The SbDict class organizes a dictionary of keys and values​.

SYNOPSIS
#include <Inventor/SbDict​.h>

Public Typestypedef uintptr_t Key

Public Member FunctionsSbDict (const int entries=251)
SbDict (const SbDict &from)
~SbDict ()
SbDict & operator= (const SbDict &from)
void applyToAll (SbDictApplyFunc *rtn) const
void applyToAll (SbDictApplyDataFunc *rtn, void *data) const
void clear (void)
SbBool enter (const Key key, void *const value)
SbBool find (const Key key, void *&value) const
void makePList (SbPList &keys, SbPList &values)
SbBool remove (const Key key)
void setHashingFunction (SbDictHashingFunc *func)

Detailed DescriptionThe SbDict class organizes a dictionary of keys and values​. It uses hashing to quickly insert and find entries in the dictionary​. An entry consists of an unique key and a generic pointer​.

Constructor & Destructor Documentation

SbDict::SbDict (const int entries = 251)Constructor with entries specifying the initial number of buckets in the hash list -- so it need to be larger than 0​. Other than this, no special care needs to be taken in choosing the value since it is always rounded up to the nearest power of two​.

SbDict::SbDict (const SbDict & from)Copy constructor​.

SbDict::~SbDict ()Destructor​.

Member Function Documentation

SbDict & SbDict::operator= (const SbDict & from)Make a shallow copy of the contents of dictionary from into this dictionary​.

void SbDict::applyToAll (SbDictApplyFunc * rtn) constApplies rtn to all entries in the dictionary​.

void SbDict::applyToAll (SbDictApplyDataFunc * rtn, void * data) constThis is an overloaded member function, provided for convenience​. It differs from the above function only in what argument(s) it accepts​.

void SbDict::clear (void)Clear all entries in the dictionary​.

SbBool SbDict::enter (const Key key, void *const value)Inserts a new entry into the dictionary​. key should be a unique number, and value is the generic user data​. If key does not exist in the dictionary, a new entry is created and TRUE is returned​. Otherwise, the generic user data is changed to value, and FALSE is returned​.

SbBool SbDict::find (const Key key, void *& value) constSearches for key in the dictionary​. If an entry with this key exists, TRUE is returned and the entry value is returned in value​. Otherwise, FALSE is returned​.

void SbDict::makePList (SbPList & keys, SbPList & values)Creates lists with all entries in the dictionary​.

SbBool SbDict::remove (const Key key)Removes the entry with key key​. TRUE is returned if an entry with this key was present, FALSE otherwise​.

void SbDict::setHashingFunction (SbDictHashingFunc * func)Sets a new hashing function for this dictionary​. Default hashing function just returns the key​. If you find that items entered into the dictionary seems to make clusters in only a few buckets, you should try setting a hashing function​. If you're for instance using strings, you could use the static SbString::hash() function (you'd need to make a static function that will cast from SbDict::Key to char * of course)​. This function is not part of the OIV API​.

AuthorGenerated automatically by Doxygen for Coin from the source code​.
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Johanes Gumabo
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