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Class std.concurrency.Generator
A Generator is a Fiber
that periodically returns values of type T
to the
caller via yield
. This is represented as an InputRange.
class Generator(T)
;
Constructors
Name | Description |
---|---|
this
(fn)
|
Initializes a generator object which is associated with a static D function. The function will be called once to prepare the range for iteration. |
this
(fn, sz)
|
Initializes a generator object which is associated with a static D function. The function will be called once to prepare the range for iteration. |
this
(fn, sz, guardPageSize)
|
Initializes a generator object which is associated with a static D function. The function will be called once to prepare the range for iteration. |
this
(dg)
|
Initializes a generator object which is associated with a dynamic D function. The function will be called once to prepare the range for iteration. |
this
(dg, sz)
|
Initializes a generator object which is associated with a dynamic D function. The function will be called once to prepare the range for iteration. |
this
(dg, sz, guardPageSize)
|
Initializes a generator object which is associated with a dynamic D function. The function will be called once to prepare the range for iteration. |
Properties
Name | Type | Description |
---|---|---|
empty [get]
|
bool | Returns true if the generator is empty. |
front [get]
|
T | Returns the most recently generated value by shallow copy. |
Methods
Name | Description |
---|---|
moveFront
()
|
Returns the most recently generated value without executing a
copy contructor. Will not compile for element types defining a
postblit, because Generator does not return by reference.
|
popFront
()
|
Obtains the next value from the underlying function. |
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. |
toString
()
|
Convert Object to a human readable string. |
Example
auto tid = spawn({
int i;
while (i < 9)
i = receiveOnly!int;
ownerTid .send(i * 2);
});
auto r = new Generator!int({
foreach (i; 1 .. 10)
yield(i);
});
foreach (e; r)
tid .send(e);
writeln(receiveOnly!int); // 18
Authors
Sean Kelly, Alex Rønne Petersen, Martin Nowak
License
Copyright © 1999-2024 by the D Language Foundation | Page generated by ddox.