On Monday, 17 August 2015 at 15:05:56 UTC, Andre Polykanine wrote:
Hi everyone,
I'm new to D (I'm learning it by reading the great online book
by Ali
Çehreli - thank you very much for it, sir!), and, more
than that,
programming is my hobby, so please bear with me if I'm asking
stupid
questions.
I've made a toy project which is a small command-line
XML files
validator:
https://github.com/Oire/dxv/
and I have a couple questions about it:
1. I'm using std.getopt but don't know how to make it display
a help
message if no options are present at all:
D:\repos\git\dxv\dxv.exe
(nothing happens but I would like it to show the help
as with
--help switch)
Check if args has changed length after calling getopt, if not
then it didn't find any options.
2. As you can see, I check whether the file to validate can be
read. I
tried both `try...catch` and `enforce` (current version:
`string s = enforce(cast(string)std.file.read(f), "Unable
to read
file");`
), but this very exception for some reason can be caught
only in
`main()`.
What am I missing?
Thanks!
string s;
try
{
s = cast(string)std.file.read(f);
}
catch (FileException e)
{
// do whatever you want.
}
