Throw exception

  • Thread starter Thread starter Curious
  • Start date Start date
C

Curious

What is the difference between:

catch(Exception e)
{ throw e; }

and

catch(Exception e)
{ throw; }
 
Curious said:
What is the difference between:

catch(Exception e)
{ throw e; }

and

catch(Exception e)
{ throw; }
Click to expand...

The first form creates a new stack trace from the point of throwing;
the second form preserves the stack trace of the original expection. I
find the second form is almost always more useful, unless you're
actually trying to hide the internals of your code.
 
What if I want both the info about what happened earlier and what
happened from that point on?
 
Curious said:
What if I want both the info about what happened earlier and what
happened from that point on?
Click to expand...

What do you mean by "from that point on"? You're throwing an exception
- you either get:

Top level
Second level
Level you catch at
Level below
Bottom level

(with throw)

or

Top level
Second level
Level you catch at

(with throw e)
 
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