Erlang Central

Aligning Strings

Revision as of 20:20, 3 December 2006 by RJ (Talk | contribs)


You want to align a string, left, right, or center. You might use this when generating reports, for example.


The easiest solution is to use the string module, which solves the left and right padding issues.

1> io:fwrite("|~s|~s|~n", [ string:left("Title",20), string:right("Price",10) ]).
|Title               |     Price|
2> io:fwrite("|~s|~n", [ string:centre("Fabulous", 25) ]).
|        Fabulous         |

left and right both default to using '$ ' (the space character) as the padding character; you may override this by providing the character in the third argument. The left and right functions also truncate the string if it's longer than the specified field width, but centre generates an error in that case.

roulette tips Online casino - Blackjack online Casino rules. free online casino slot slots hints Online casino - Internet Casinos online casino tips fun casinos internet casinos sites fun casinos