Is there a standard way to handle errors in a chain of range
transformations?
Let's say I want to read some comma separated numbers from a file.
auto myArray = file.byLine().splitter().map!(to!int).array();
Now, besides fatal errors (like I/O), let's suppose I want to
handle some errors in a silent way:
- skip unicode decoding errors;
- assume blank records with 0;
- skip the line entirely if the conversion to int is not possible;
I can catch UTFException, ConvException or ConvOverflowException
for the entire syntax chain but there are some disadvantages:
- I don't know exactly which of the chain members thrown the
exception;
- I cannot skip/handle the error and continue;
The only solution I thought about is to break the nice chain
syntax and handle errors on each of the chain members, but I
wonder if there is probably another way.
Thanks.
