Joined May 2011
·
Posted to
TIL Ruby variables string interpolation
over 1 year
ago
Correct syntax highlight for this protip:
https://gist.github.com/jodosha/7410007
Posted to
TIL Ruby variables string interpolation
over 1 year
ago
It looks like the Ruby syntax here is broken.
Posted to
Ruby implicit coercion
over 1 year
ago
@apecox In this case, if you omit 0, you're forced to implement #+ in InvoiceValue::Entry. This because the loop don't have an initial value and tries to call #+ on all the entries.
Instead, with that explicit argument the VM tries to do 0.+(entry), that means a Fixnum with an InvoiceValue::Entry so asks to the last one to coerce itself, and the trick works.
So, there is a win in having that 0.
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Thanks for the clarification. Was this syntax introduced recently? IIRC, my first attempt was written like your last example, but it didn't worked.