Typedefs | Enumerations | Functions

Hash Table

Collaboration diagram for Hash Table:


typedef enum _Itable_IndexTypes Itable_IndexTypes
typedef enum _Itable_Types Itable_Types




Itable * iupTableCreate (Itable_IndexTypes indexType)
Itable * iupTableCreateSized (Itable_IndexTypes indexType, unsigned int initialSizeIndex)
void iupTableDestroy (Itable *it)
void iupTableClear (Itable *it)
int iupTableCount (Itable *it)
void iupTableSet (Itable *it, const char *key, void *value, Itable_Types itemType)
void iupTableSetFunc (Itable *it, const char *key, Ifunc func)
void * iupTableGet (Itable *it, const char *key)
Ifunc iupTableGetFunc (Itable *it, const char *key, void **value)
void * iupTableGetTyped (Itable *it, const char *key, Itable_Types *itemType)
void iupTableRemove (Itable *it, const char *key)
char * iupTableFirst (Itable *it)
char * iupTableNext (Itable *it)
void * iupTableGetCurr (Itable *it)
int iupTableGetCurrType (Itable *it)
void iupTableSetCurr (Itable *it, void *value, Itable_Types itemType)
char * iupTableRemoveCurr (Itable *it)

Detailed Description

The hash table can be indexed by strings or pointer address, and each value can contain strings, pointers or function pointers.
See iup_table.h

Typedef Documentation

How the table key is interpreted.

How the value is interpreted.

Enumeration Type Documentation

How the table key is interpreted.


a pointer address is used as key.


a string as key

How the value is interpreted.


regular pointer for strings and other pointers


string duplicated internally


function pointer

Function Documentation

Itable* iupTableCreate ( Itable_IndexTypes  indexType  ) 

Creates a hash table with an initial default size. This function is equivalent to iupTableCreateSized(0);

Itable* iupTableCreateSized ( Itable_IndexTypes  indexType,
unsigned int  initialSizeIndex 

Creates a hash table with the specified initial size. Use this function if you expect the table to become very large. initialSizeIndex is an array into the (internal) list of possible hash table sizes. Currently only indexes from 0 to 8 are supported. If you specify a higher value here, the maximum allowed value will be used.

void iupTableDestroy ( Itable *  it  ) 

Destroys the Itable. Calls iupTableClear.

void iupTableClear ( Itable *  it  ) 

Removes all items in the table. This function does also free the memory of strings contained in the table!!!!

int iupTableCount ( Itable *  it  ) 

Returns the number of keys stored in the table.

void iupTableSet ( Itable *  it,
const char *  key,
void *  value,
Itable_Types  itemType 

Store an element in the table.

void iupTableSetFunc ( Itable *  it,
const char *  key,
Ifunc  func 

Store a function pointer in the table. Type is set to IUPTABLE_FUNCPOINTER.

void* iupTableGet ( Itable *  it,
const char *  key 

Retrieves an element from the table. Returns NULL if not found.

Ifunc iupTableGetFunc ( Itable *  it,
const char *  key,
void **  value 

Retrieves a function pointer from the table. If not a function or not found returns NULL. value always contains the element pointer.

void* iupTableGetTyped ( Itable *  it,
const char *  key,
Itable_Types itemType 

Retrieves an element from the table and its type.

void iupTableRemove ( Itable *  it,
const char *  key 

Removes the entry at the specified key from the hash table and frees the memory used by it if it is a string...

char* iupTableFirst ( Itable *  it  ) 

Key iteration function. Returns a key. To iterate over all keys call iupTableFirst at the first and call iupTableNext in a loop until 0 is returned... Do NOT change the content of the hash table during iteration. During an iteration you can use context with iupTableGetCurr() to access the value of the key very fast.

char* iupTableNext ( Itable *  it  ) 

Key iteration function. See iupTableNext.

void* iupTableGetCurr ( Itable *  it  ) 

Returns the value at the current position.
The current context is an iterator that is filled by iupTableNext().
iupTableGetCur() is faster then iupTableGet(), so when you want to access an item stored at a key returned by iupTableNext(), use this function instead of iupTableGet().

int iupTableGetCurrType ( Itable *  it  ) 

Returns the type at the current position.
Same as iupTableGetCurr but returns the type. Returns -1 if failed.

void iupTableSetCurr ( Itable *  it,
void *  value,
Itable_Types  itemType 

Replaces the data at the current position.

char* iupTableRemoveCurr ( Itable *  it  ) 

Removes the current element and returns the next key. Use this function to remove an element during an iteration.