Perl terms starting with H

12 terms

Hacker Someone who breaks into computer systems in order to steal, change or destroy information.
Handler A "subroutine" or "method" that is called by Perl when your program needs to respond to some internal event, such as a "signal", or an encounter with an…
hard reference A "scalar" "value" containing the actual address of a "referent", such that the referent's "reference" count accounts for it.
Hash A mathematical algorithm that represents a unique value for a given set of data, similar to a digital fingerprint.
hash table A data structure used internally by Perl for implementing associative arrays (hashes) efficiently. See also "bucket".
header file A file containing certain required definitions that you must include "ahead" of the rest of your program to do certain obscure operations.
here document So called because of a similar construct in shells that pretends that the lines following the "command" are a separate "file" to be fed to the command, up…
hexadecimal A number system with a base of 16. The digits are 0-9 and A-F, where F equals the decimal value of 15.
home directory The directory you are put into when you log in. On a Unix system, the name is often placed into $ENV{HOME} or $ENV{LOGDIR} by login, but you can also find…
host In a network, the central computer which controls the remote computers and holds the central databases.
hubris Excessive pride, the sort of thing Zeus zaps you for. Also the quality that makes you write (and maintain) programs that other people won't want to say…
HV have