It is correct to say C's switch is O(1).
Theoritically speaking, BrowserUK is also wrong when he said O(1) means test once. However he had something in () said "in this case", which made himself "politically" right ;-)
Strictly speaking, O(1) means that the cost is a constant, not a function of any variable, thus it is considered ideal, as the cost is 100% predictable. The complexity (worst scenario cost) of the switch statement is determined at the coding time, not base on the input data at execution time.
C's switch statement falls into this category. I personally believe that there is a benefit to have it in Perl.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||