efficiency, 211
Polya, 177-78
robustness, 210
state, 212
Queue
variable, 266
Read source code, 222-24
defined, 222
potential problems, 223
purpose, 222
questions answered, 223
refined tactics, 223
related tactics, 223-24
See also
Debugging tactics
Reasoning
based on facts, 40
in both directions, 29-30
Red herrings
defined, 30
watching for, 30-31
Redundancy exploitation, 446-47, 450
Remove
function
breakpoint at, 119
missing statement in, 131
no termination condition check, 117
not updating
_last
variable, 121
unguarded reference, 114, 116
Repeating, debugging by, 11
"Reporter's method," 43
Research, 414-27
Allwood and Bjhorhag, 1991,425
Anderson and Jeffries, 1985, 416-17
Brooke and Duncan, 1980, 415
Carver, 1989, 423-24
Ebrahami, 1994, 425-26
Gilmore and Smith, 1984, 415-16
Gould, 1975, 414-15
Gugerty and Olsen, 1987, 419-20
Katz and Anderson, 1988, 421-23
Kessler and Anderson, 1987, 420
563
Spohrer, Soloway, and Pope, 1985, 417-
18
Spohrer and Soloway, 1987, 420-21
Stone, Jordon, and Wright, 1990, 424-25
summary, 426-27
Vessey, 1985, 1986, 418-19
Vessey, 1989, 423
Youngs, 1974, 414
See also
Way of the psychologist
Resources, per Schoenfeld, 183
Reviewing methods, 509-13
later, 513
now, 509
Revision Control System (RCS), 59
Robustness, 210-11
hypotheses, 211
questions, 210
Root-cause analysis, 362-63
database records, 363
defined, 362
statistical summaries, 363
tools, 380
Root
variable, 116, 117
as null pointer, 154
updating, 157
Rule-based behavior, 391-92
Rule-based errors, 400-401
categories, 400
example, 401
rule selection factors, 400
See also
Error causes
Rules
actions, 405
bad, application of, 404-7
conditions, 403, 404-5
formerly effective, 405-6
good, misapplication of, 401-4
ineffective, 405
occasionally effective, 406-7
problems, 403-4
strength, 403
I Index
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