[munk-a]

Also generally having slow code is less a problem then expensive code - exceptions can allow you to use more succinct expression that will lower long term maintenance costs - the full lack of exceptions is one of the things that I think continues to impair Go which has a lot of other neat ideas (and a really good way to deal with sub-addressing in the form of slices).

[zozbot234]

Doesn't Go have panic-recover which is basically the same deal?

[munk-a]

Panic/recover are much more limited and while you can build an exception system from them (much like all turing complete things can be all other turing complete things) it is a pain and extremely inefficient. So panics do exist and are used for I/O errors sometimes but it's quite inconsistent.