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this is all Philip's fault

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Mark Pilgrim
2010-02-11 14:38:53 -05:00
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@@ -18,7 +18,9 @@ body{counter-reset:h1 9}
</blockquote>
<p id=toc>&nbsp;
<h2 id=divingin>(Not) Diving In</h2>
<p class=f>In this chapter, you&#8217;re going to write and debug a set of utility functions to convert to and from Roman numerals. You saw the mechanics of constructing and validating Roman numerals in <a href=regular-expressions.html#romannumerals>&#8220;Case study: roman numerals&#8221;</a>. Now step back and consider what it would take to expand that into a two-way utility.
<p class=f>Kids today. So spoiled by these fast computers and fancy &#8220;dynamic&#8221; languages. Write first, ship second, debug third (if ever). In my day, we had discipline. Discipline, I say! We had to write programs by <em>hand</em>, on <em>paper</em>, and feed them to the computer on <em>punchcards</em>. And we <em>liked it!</em>
<p>In this chapter, you&#8217;re going to write and debug a set of utility functions to convert to and from Roman numerals. You saw the mechanics of constructing and validating Roman numerals in <a href=regular-expressions.html#romannumerals>&#8220;Case study: roman numerals&#8221;</a>. Now step back and consider what it would take to expand that into a two-way utility.
<p><a href=regular-expressions.html#romannumerals>The rules for Roman numerals</a> lead to a number of interesting observations:
<ol>
<li>There is only one correct way to represent a particular number as a Roman numeral.