the oo design process2.mht

VC书籍介绍C++的应用的TheOODesignProcess.zip 电子书好用的

            sufficient up-front analysis. </P>
            <P>Looking back at the incipient problem statement, you'll =
notice=20
            that I haven't mentioned computers anywhere. I'm describing =
the=20
            problem, not a computer program. The problem domain, here, =
is=20
            parenting, not banking. Consequently, the statement is =
written for a=20
            parent, not a banker, to read. </P>
            <P>Also, note the relatively simple structure of the =
sentences.=20
            Avoid the passive voice and other turgid academic prose =
styles like=20
            the plague. A simple declarative sentence=20
            (subject/verb/direct-object) identifies the initiator of an =
action=20
            (the subject), the operation performed (the verb) and the =
receiver=20
            of the message that requests the operation (the direct =
object). The=20
            passive voice only identifies the last two of these three =
parts. Use=20
            "I," "you," and so forth whenever it makes sense to do so. =
</P><A=20
            name=3D6>
            <P><STRONG class=3Dsubhead>Happy trails </STRONG><BR>So =
that's it for=20
            this month. We've made a start by defining the basic =
problem. Next=20
            month I'll continue the exercise, flushing out and refining =
the=20
            problem statement so that it will be sufficiently useful. =
</P><A=20
            name=3Dresources>
            <P><STRONG class=3Dsubhead>Resources </STRONG>
            <UL>
              <LI>Read a great editorial in the March/April, 2000 issue =
of IEEE=20
              Software on the confusion of paperwork with progress. The=20
              editorial is called "<A=20
              =
href=3D"http://computer.org/software/so2000/pdf/s2011.pdf">Cargo=20
              Cult Software Engineering</A>" by Steve McConnell.<BR><BR>
              <LI>Learn more about UI design in <I>About Face: The =
Essentials of=20
              User Interface Design</I> by Alan Cooper (IDG Books). It =
is ironic=20
              that the author of a great book about UI design is also =
the=20
              "father of Visual Basic," the tool responsible for many of =
the=20
              worst user interfaces ever foisted on the computing =
public. Cooper=20
              has a lot of opinions, some of which I agree with and some =
of=20
              which I don't. (In particular, I don't think of a program =
as a UI=20
              with intelligent warts hanging off of it, as Cooper seems =
to do).=20
              Nonetheless, Cooper is always entertaining, and there's a =
lot of=20
              good advice here.
              <P></P>
              <P>I find that most of the books on UI design are written =
either=20
              by programmers (who put the convenience of the programmer =
above=20
              the needs of the user) or graphic artists (who put =
concepts like=20
              art, impact, and originality above the needs of the user). =
In=20
              either case, the user loses. It's refreshing to read a =
book about=20
              UI design written by a knowledgable programmer who not =
only=20
              insists on putting the user first, but also has a good =
design=20
              sense.</P>
              <P>From the Cooper Design "Manifesto" on Cooper Design's =
Web site:=20
              In fact, most of today's software might as well have an =
interface=20
              like this: <BR><IMG alt=3D"Error screen" height=3D136=20
              =
src=3D"http://www-106.ibm.com/developerworks/library/oo-design2/error.gif=
"=20
              width=3D375><BR></P></LI></UL><A name=3Dauthor>
            <P><STRONG class=3Dsubhead>About the author =
</STRONG><BR>Allen Holub=20
            has been working in the computer industry since 1979. He is =
widely=20
            published in magazines (<I>Dr. Dobb's Journal</I>, =
<I>Programmers=20
            Journal</I>, <I>Byte</I>, <I>MSJ</I>, among others) and is a =

            Contributing Editor to the online magazine <A=20
            href=3D"http://www.javaworld.com/">JavaWorld</A>. He has =
eight books=20
            to his credit, the latest of which (<A=20
            =
href=3D"http://www.amazon.com/exec/obidos/ASIN/1893115100/alleiholuasso">=
<I>Taming=20
            Java Threads</I></A>) covers the traps and pitfalls of Java=20
            threading. He's been designing and building object-oriented =
software=20
            for longer than he cares to remember. After eight years as a =
C++=20
            programmer, Allen abandoned C++ for Java programming in =
early 1996.=20
            He's been teaching programming (first C, then C++ and MFC, =
now=20
            OO-Design and Java programming) both on his own and for the=20
            University of California Berkeley Extension since 1982. =
Allen offers=20
            both public classes and in-house training in Java technology =
and=20
            object-oriented design topics. He also does object-oriented =
design=20
            consulting and contract Java programming. Visit Allen's Web =
site at=20
            <A =
href=3D"http://www.holub.com/">http://www.holub.com/</A>.</P><!-- End =
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