Computer Science Canada [Ruby-tut] Easily creating strings |
| Author: | wtd [ Sat Nov 13, 2004 1:05 am ] | ||||||||||
| Post subject: | [Ruby-tut] Easily creating strings | ||||||||||
In Ruby, we cannot simply add a number to a string and expect it to magically work. Something like:
Simply doesn't work. We can explicitly turn 42 into a string, though, and then it will.
But that takes a fair amount of work, and it just isn't natural. So, we either need to make the first example work, or we need a better way to construct strings. Don't hold your breath waiting for the latter. There are good reasons it won't work. However we do have a better way to construct strings.
This is known as string interpolation. Whatever is in the #{ } brackets is inserted into the string with an implied call to to_s. Whatever you include? So... anything could be put in their? Yep. Consider something like:
The result of course is:
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