Uses of Class
edu.rice.cs.plt.tuple.Option

Packages that use Option

edu.rice.cs.plt.collect	Contains general-purpose extensions to and variations on the java.util collections framework.
edu.rice.cs.plt.concurrent	Contains tools to support safe multi-threaded programs.
edu.rice.cs.plt.debug	Defines a variety of logging classes, along with other facilities for code-embedded debugging.
edu.rice.cs.plt.io	Provides extensions to the java.io package, which provides character- and byte- based streams and buffers, files, file filters, and serialization.
edu.rice.cs.plt.iter	A collection of implementations of Iterable and Iterator.
edu.rice.cs.plt.lambda	A collection of interfaces facilitating first-class functions in Java.
edu.rice.cs.plt.tuple	Classes for the type-parameterized representation of tuples.

Uses of Option in edu.rice.cs.plt.collect

Methods in edu.rice.cs.plt.collect that return Option

static <T> Option<T>

CollectUtil.castIfContains(java.util.Collection<? extends T> c, java.lang.Object obj) Cast the given object to a collection element type if that object is contained by the collection.

Methods in edu.rice.cs.plt.collect with parameters of type Option

static <T> PredicateSet<T>

CollectUtil.makeSet(Option<? extends T> opt) Produce an empty or singleton set based on the given Option.

Method parameters in edu.rice.cs.plt.collect with type arguments of type Option

static <T> java.util.Set<T>	CollectUtil.partialFunctionClosure(java.util.Set<? extends T> base, Lambda<? super T,? extends Option<? extends T>> function) Produce the set containing the elements in base and all values produced an arbitrary number of applications of function to one of these elements.
static <T> java.util.Set<T>	CollectUtil.partialFunctionClosure(T base, Lambda<? super T,? extends Option<? extends T>> function) Produce the set containing base and all values produced an arbitrary number of applications of function to base.

Uses of Option in edu.rice.cs.plt.concurrent

Methods in edu.rice.cs.plt.concurrent that return Option

Option<R>	TaskController.attemptGet(long timeout) Try to get the result within the given amount of time.
Option<R>	TaskController.attemptGet(long timeout, java.util.concurrent.TimeUnit unit) Try to get the result within the given amount of time.

Uses of Option in edu.rice.cs.plt.debug

Methods in edu.rice.cs.plt.debug that return Option

Option<java.lang.StackTraceElement>	LogSink.Message.caller() The location from which the log method was invoked, if available.
Option<java.lang.String>	LogSink.Message.text() An optional, arbitrary text message to be logged.

Methods in edu.rice.cs.plt.debug with parameters of type Option

protected static java.lang.String

TextLogSink.formatLocation(Option<java.lang.StackTraceElement> location) Convert a location to a string of the form "edu.rice.cs.plt.debug.TextLogSink.formatLocation(24)"

Uses of Option in edu.rice.cs.plt.io

Methods in edu.rice.cs.plt.io that return Option

static Option<?>

IOUtil.ensureSerializable(Option<?> opt) Apply ensureSerializable() to the given option value.

Methods in edu.rice.cs.plt.io with parameters of type Option

static Option<?>

IOUtil.ensureSerializable(Option<?> opt) Apply ensureSerializable() to the given option value.

Uses of Option in edu.rice.cs.plt.iter

Methods in edu.rice.cs.plt.iter that return Option

static <T> Option<T>

IterUtil.makeOption(java.lang.Iterable<? extends T> iter) Convert an iterable of 0 or 1 elements to an Option.

Methods in edu.rice.cs.plt.iter with parameters of type Option

static <T> SizedIterable<T>

IterUtil.toIterable(Option<? extends T> option) Produce an iterable of size 0 or 1 from an Option.

Uses of Option in edu.rice.cs.plt.lambda

Methods in edu.rice.cs.plt.lambda that return Option

Option<R>

CachedThunk.cachedValue() Combines CachedThunk.isResolved() and CachedThunk.value() in an atomic operation (avoiding inconsistencies due to a concurrent CachedThunk.reset()): if a value is cached, return it; otherwise, return "none".

Methods in edu.rice.cs.plt.lambda that return types with arguments of type Option

static <T,R> Lambda<T,Option<R>>	LambdaUtil.wrapPartial(Lambda<? super T,? extends R> lambda, boolean filterNull, Predicate<? super java.lang.RuntimeException> filterException) Treat the given lambda as a partial function, where well-defined results have a "some" return type, and undefined results map to "none".
static <T1,T2,R> Lambda2<T1,T2,Option<R>>	LambdaUtil.wrapPartial(Lambda2<? super T1,? super T2,? extends R> lambda, boolean filterNull, Predicate<? super java.lang.RuntimeException> filterException) Treat the given lambda as a partial function, where well-defined results have a "some" return type, and undefined results map to "none".
static <T1,T2,T3,R> Lambda3<T1,T2,T3,Option<R>>	LambdaUtil.wrapPartial(Lambda3<? super T1,? super T2,? super T3,? extends R> lambda, boolean filterNull, Predicate<? super java.lang.RuntimeException> filterException) Treat the given lambda as a partial function, where well-defined results have a "some" return type, and undefined results map to "none".
static <T1,T2,T3,T4,R> Lambda4<T1,T2,T3,T4,Option<R>>	LambdaUtil.wrapPartial(Lambda4<? super T1,? super T2,? super T3,? super T4,? extends R> lambda, boolean filterNull, Predicate<? super java.lang.RuntimeException> filterException) Treat the given lambda as a partial function, where well-defined results have a "some" return type, and undefined results map to "none".
static <R> Thunk<Option<R>>	LambdaUtil.wrapPartial(Thunk<? extends R> thunk, boolean filterNull, Predicate<? super java.lang.RuntimeException> filterException) Treat the given thunk as a partial function, where well-defined results have a "some" return type, and undefined results map to "none".

Uses of Option in edu.rice.cs.plt.tuple

Subclasses of Option in edu.rice.cs.plt.tuple

class	IdentityWrapper<T> A wrapper that defines IdentityWrapper.equals(java.lang.Object) and Tuple.hashCode() in terms of its value's identity (==) instead of equality (@code equals})
class	Null<T> An empty tuple.
class	Wrapper<T> An arbitrary 1-tuple; overrides Wrapper.toString(), Wrapper.equals(Object), and Tuple.hashCode().

Methods in edu.rice.cs.plt.tuple that return Option

static <T> Option<T>	Option.none() Return the "none" case singleton, cast to the appropriate type.
static <T> Option<T>	Option.some(T val) Create a "some" case wrapper for the given value.
static <T> Option<T>	Option.wrap(T val) Treat a possibly-null value as an Option: if the value is null, produce a "none"; otherwise, produce a "some" wrapping the value.

Methods in edu.rice.cs.plt.tuple that return types with arguments of type Option

static <T extends java.lang.Comparable<? super T>> TotalOrder<Option<? extends T>>	Option.comparator() Produce a comparator for options, ordered by the natural order of the elements with "none" values at the front.
static <T> TotalOrder<Option<? extends T>>	Option.comparator(java.util.Comparator<? super T> comp) Produce a comparator for options, ordered by the given comparator with "none" values at the front.

Methods in edu.rice.cs.plt.tuple with parameters of type Option

static <T> T

Option.unwrap(Option<? extends T> opt, T forNone) A more general form of the instance method unwrap(Object), allowing forNone to have a different type than opt (the result has a common supertype).