/** * Create a Mutable variable, which can be mutated inside a Closure * * e.g. * <pre>{@code * MutableBoolean num = MutableBoolean.of(true); * * num.mutate(n->!n)) * * System.out.println(num.getAsBoolean()); * //prints false * } </pre> * * @param var Initial value of Mutable * @return New Mutable instance */ public static <T> MutableBoolean of(final boolean var) { return new MutableBoolean( var); }
@Override public R get() { return fn.apply(host.get()); }
/** * @param varFn New value * @return this object with mutated value */ public MutableBoolean mutate(final BooleanFunction varFn) { return set(varFn.apply(getAsBoolean())); }
@Test public void inClosure2(){ MutableBoolean myInt = new MutableBoolean(zero); BiFunction<Boolean,Boolean,MutableBoolean> fn = (i,j)-> myInt.set(true); fn.apply(trueB,falseB); assertThat(myInt.getAsBoolean(), is(true)); }
@Test public void testClosedVar() { assertThat(new MutableBoolean(trueB).getAsBoolean(),equalTo(trueB)); } @Test
@Test public void testMutate(){ MutableBoolean num = MutableBoolean.of(falseB); Stream.of(1,2,3,4).map(i->i*10).peek(i-> num.mutate(n->!n)).forEach(System.out::println); assertThat(num.getAsBoolean(),is(false)); } @Test
@Override public void accept(final Boolean t) { set(t); }
@Test public void testClosedVarHashCode() { assertThat(new MutableBoolean(trueB).hashCode(),equalTo(new MutableBoolean(trueB).hashCode())); } @Test
@Test public void externalGet(){ value = false; MutableBoolean ext = MutableBoolean.fromExternal(()->value,v->this.value=v); assertThat(ext.get(),equalTo(false)); } @Test
@Test public void externalSet(){ value = false; MutableBoolean ext = MutableBoolean.fromExternal(()->value,v->this.value=v); ext.set(false); assertThat(value,equalTo(false)); }
public Boolean get() { return getAsBoolean(); }
@Test public void externalMapOutputToObj(){ value = false; Mutable<Boolean> ext = MutableBoolean.fromExternal(()->value,v->this.value=v) .mapOutputToObj(s->!s); assertThat(ext.get(),equalTo(true)); }
@Test public void externalMapInputObj(){ value = false; Mutable<Boolean> ext = MutableBoolean.fromExternal(()->value, v->this.value=v) .mapInputToObj(s->!s); ext.set(true); assertThat(value,equalTo(false)); }
@Test public void testSet() { assertThat(new MutableBoolean().set(falseB).getAsBoolean(),is(falseB)); }
@Override public Mutable<T1> set(final T1 value) { host.set(fn.apply(value)); return this; }
@Test public void testClosedVarHashCodeFalse() { assertThat(new MutableBoolean(trueB).hashCode(),not(equalTo(new MutableBoolean(falseB).hashCode()))); } boolean value = false;
public Boolean get() { return getAsBoolean(); }
@Test public void inClosure(){ MutableBoolean myInt = new MutableBoolean(zero); Function<Integer,Function<Integer,MutableBoolean>> fn = ( (Integer i)-> (Integer j)-> myInt.set(true)); fn.apply(10).apply(20); assertThat(myInt.getAsBoolean(), is(true)); } @Test
/** * @param varFn New value * @return this object with mutated value */ public MutableBoolean mutate(final BooleanFunction varFn) { return set(varFn.apply(getAsBoolean())); }
return new MutableBoolean() { @Override public boolean getAsBoolean() {