gdbm with c programmin Books & Tutorial. Post: 302697979

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Top Forums Programming gdbm with c programmin Books & Tutorial. Post 302697979 by DGPickett on Friday 7th of September 2012 04:37:08 PM

09-07-2012

Registered User

The erliest and most basic are the tsearch(), bsearch(), lsearch(), hsearch(), qsort() family:
Man Page for tsearch (linux Section 3) - The UNIX and Linux Forums

C++ Standard Template libs has many very basic containers (no hash):
STL Containers - C++ Reference
map - C++ Reference

To get the hash, many of my employers have had roguewave h++ libraries: RWTPtrHashTable<T>

Don't overlook the fine container objects in JAVA, like tree map:
TreeMap (Java Platform SE 6)

Google reveals a myriad of open source containers/lists/maps/trees/tables. Some RDBMS implement a multi-column index as containers of containers of containers, so each column can be looked up even if others are not there (so the whole container is iterated). Many good wiki on the high level concepts of hash and such, very good to know first, so API controls make sense.

Finally, awk and bash have associative arrays or lookup vectors, which are hash maps (learn the lingo or get out). Just be careful you are not in the simple "array addressed by integer" tutorial! I am sure PERL has all this, too, so read the wiki and pick your poison. Do you grasp the array, linked list (sorted and unsorted), tree and hash basic concepts?

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LEARN ABOUT DEBIAN

tdb

TDB(3)							     Linux Programmer's Manual							    TDB(3)

NAME

       tdb - trivial database

SYNOPSIS

       A database similar to gdbm which allows multiple simultaneous writers.

DESCRIPTION

       This is a simple database API. It was inspired by the realisation that in Samba we have several ad-hoc bits of code that essentially imple-
       ment small databases for sharing structures between parts of Samba. As I was about to add another I realised that a generic database module
       was called for to replace all the ad-hoc bits.

       I based the interface on gdbm. I couldn't use gdbm as we need to be able to have multiple writers to the databases at one time.

AUTHORS

       Software: Andrew Tridgell <tridge@linuxcare.com> and Luke Kenneth Casson Leighton Man page: Ben Woodard <ben@valinux.com>

SEE ALSO

       gdbm(3),  tdb_open(3),  tdb_close(3),  tdb_delete(3),  tdb_error(3),  tdb_exists(3),  tdb_fetch(3), tdb_firstkey(3), tdb_store(3), tdb_tra-
       verse(3), tdb_lockall(3), tdb_lockkeys(3), tdb_chainlock(3)

Samba								   Aug 16, 2000 							    TDB(3)

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