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Class object.Throwable

The base class of all thrown objects.

class Throwable ;

All thrown objects must inherit from Throwable. Class Exception, which derives from this class, represents the category of thrown objects that are safe to catch and handle. In principle, one should not catch Throwable objects that are not derived from Exception, as they represent unrecoverable runtime errors. Certain runtime guarantees may fail to hold when these errors are thrown, making it unsafe to continue execution after catching them.


file stringThe file name of the D source code corresponding with where the error was thrown from.
info object.Throwable.TraceInfoThe stack trace of where the error happened. This is an opaque object that can either be converted to string, or iterated over with foreach to extract the items in the stack trace (as strings).
infoDeallocator nothrow void function(object.Throwable.TraceInfo)If set, this is used to deallocate the TraceInfo on destruction.
line ulongThe line number of the D source code corresponding with where the error was thrown from.
msg stringA message describing the error.


next[get] inout(Throwable)
next[set] ThrowableReplace next in chain with tail. Use chainTogether instead if at all possible.


chainTogether () Append e2 to chain of exceptions that starts with e1.
message () Get the message describing the error.
opApply (dg) Loop over the chain of Throwables.
refcount ()
toString () Overrides Object.toString and returns the error message. Internally this forwards to the toString overload that takes a sink delegate.
toString () The Throwable hierarchy uses a toString overload that takes a sink delegate to avoid GC allocations, which cannot be performed in certain error situations. Override this toString method to customize the error message.
factory (classname) Create instance of class specified by the fully qualified name classname. The class must either have no constructors or have a default constructor.
opCmp (o) Compare with another Object obj.
opEquals (o) Test whether this is equal to o. The default implementation only compares by identity (using the is operator). Generally, overrides and overloads for opEquals should attempt to compare objects by their contents. A class will most likely want to add an overload that takes your specific type as the argument and does the content comparison. Then you can override this and forward it to your specific typed overload with a cast. Remember to check for null on the typed overload.
toHash () Compute hash function for Object.


Walter Bright, Sean Kelly


Boost License 1.0.