Bug 11816 – std.stdio.slurp uninformative error message

http://forum.dlang.org/thread/[email protected]#post-utamhoiglwebynzfduua:40forum.dlang.org discusses that slurp does not specify file line and exact cause of error.

Same discussion suggests slurp should be faster.

For the record the idea was to catch std.conv.parse error in order to throw something more specifc to slurp: > Ine reason is that I want to provide helpful and verbose error messages for invalid input (e.g. "Invalid numeric value found in field 3 line 1000") - and with the "slurp" method, any input error will result in a not-so-helpful exception (e.g. "std.conv.ConvException@/usr/include/dmd/phobos/std/conv.d(2009): Unexpected 'H' when converting from type char[] to type ulong).

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