Exception
Related Doc:
package control
Returns a partially constructed Catch object, which you must give
an exception handler function as an argument to by.
Returns a partially constructed Catch object, which you must give
an exception handler function as an argument to by. Example:
handling(ex1, ex2) by (_.printStackTrace)
A container class for catch/finally logic.
A container class for catch/finally logic.
Pass a different value for rethrow if you want to probably unwisely allow catching control exceptions and other throwables which the rest of the world may expect to get through.
A container class for finally code.
Test two objects for inequality.
Test two objects for inequality.
true if !(this == that), false otherwise.
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null.
For numerics, it returns a hash value which is consistent
with value equality: if two value type instances compare
as true, then ## will produce the same hash value for each
of them.
For null returns a hashcode where null.hashCode throws a
NullPointerException.
a hash value consistent with ==
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
the object to compare against this object for equality.
true if the receiver object is equivalent to the argument; false otherwise.
A Catch object which catches everything.
Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics.
Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at
runtime, while the expression List(1).asInstanceOf[List[String]] will not.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the requested type.
the receiver object.
ClassCastException if the receiver object is not an instance of the erasure of type T0.
Creates a Catch object which will catch any of the supplied exceptions.
Creates a Catch object which will catch any of the supplied exceptions.
Since the returned Catch object has no specific logic defined and will simply
rethrow the exceptions it catches, you will typically want to call opt or
either on the return value, or assign custom logic by calling "withApply".
Note that Catch objects automatically rethrow ControlExceptions and others
which should only be caught in exceptional circumstances. If you really want
to catch exactly what you specify, use catchingPromiscuously instead.
Creates a Catch object which will catch any of the supplied exceptions.
Creates a Catch object which will catch any of the supplied exceptions.
Unlike "catching" which filters out those in shouldRethrow, this one will
catch whatever you ask of it: ControlThrowable, InterruptedException,
OutOfMemoryError, you name it.
Create a copy of the receiver object.
Tests whether the argument (arg0) is a reference to the receiver object (this).
Tests whether the argument (arg0) is a reference to the receiver object (this).
The eq method implements an equivalence relation on
non-null instances of AnyRef, and has three additional properties:
x and y of type AnyRef, multiple invocations of
x.eq(y) consistently returns true or consistently returns false.x of type AnyRef, x.eq(null) and null.eq(x) returns false.null.eq(null) returns true. When overriding the equals or hashCode methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they
should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
true if the argument is a reference to the receiver object; false otherwise.
The equality method for reference types.
Creates a Catch object which maps all the supplied exceptions to the given value.
Creates a Catch object which maps all the supplied exceptions to None.
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as
well as the interaction between finalize and non-local returns
and exceptions, are all platform dependent.
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
Creates a Catch object which catches and ignores any of the supplied exceptions.
Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics.
Therefore the expression 1.isInstanceOf[String] will return false, while the
expression List(1).isInstanceOf[List[String]] will return true.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the specified type.
true if the receiver object is an instance of erasure of type T0; false otherwise.
Equivalent to !(this eq that).
Equivalent to !(this eq that).
true if the argument is not a reference to the receiver object; false otherwise.
The empty Catch object.
A Catch object which catches non-fatal exceptions.
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
!!! Not at all sure of every factor which goes into this, and/or whether we need multiple standard variations.
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
a String representation of the object.
Returns a Catch object with no catch logic and the argument as Finally.
Creates a Catch object which unwraps any of the supplied exceptions.
Classes representing the components of exception handling. Each class is independently composable. Some example usages:
This class differs from
scala.util.Tryin that it focuses on composing exception handlers rather than composing behavior. All behavior should be composed first and fed to aCatchobject using one of theoptoreithermethods.