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Scala 2.1.6
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class
Fluid
[ T ]
extends
java.lang.Object with
scala.ScalaObjectvalue method. New values can be
pushed using the withValue method.
Values pushed via withValue only
stay valid while the withValue's
second argument, a parameterless closure,
executes. When the second argument finishes,
the fluid reverts to the previous value.
Usage of withValue looks like this:
someFluid.withValue(newValue) {
// ... code called in here that calls value ...
// ... will be given back the newValue ...
}
Each thread gets its own stack of bindings. When a
new thread is created, the fluid gets a copy of
the stack of bindings from the parent thread, and
from then on the bindings for the new thread
are independent of those for the original thread.| Constructor Summary | |
def
this
( init : T )
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| Def Summary | |
override
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def
toString
: java.lang.String
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def
value
: T
Retrieve the current value |
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def
value_=
( newval : T )
: scala.Unit
Change the currently bound value, discarding the old value. Usually withValue() gives better semantics. |
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def
withValue
[ S ]
( newval : T ) ( thunk : => S )
: S
Set the value of the fluid while executing the specified thunk. |
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| Constructor Detail |
def
this
( init : T )
| Def Detail |
def
toString
: java.lang.String
def
value
: T
def
value_=
( newval : T ) : scala.Unit
def
withValue
[ S ]( newval : T ) ( thunk : => S ) : S