Initializing help system before first use

hmenum

Purpose
Iterate over all elements of a hashmap.
Synopsis
int hmenum(XPRMhashmap hm, void *ctf, int (*getpair)(void *ctf, unsigned int nb, size_t key, size_t val));
Arguments
hm 
A hashmap
ctf 
Function context for getpair
getpair 
Function to call for each pair <key,value> (may be NULL)
Return value
The number of elements in the hashmap or -1 if the enumeration has been interrupted.
Further information
1. This function enumerates all elements of a hashmap: each pair <key,value> is passed back to the caller through the getpair function that receives its context ( ctf) and the number of elements that have been processed so far in addition to the key and its associated value.
2. The value returned by the getpair function decides how to proceed: if it returns 0 the enumeration continues; with the value -1 the current element will be removed from the hashmap before continuing; any other value will cause the enumeration to terminate (and hmenum will return -1).
Related topics
hmdump.

Parent Topic Miscellaneous

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