Struct Ref 

pub struct Ref<X: GXExt> {
    pub id: ExprId,
    pub last: Option<Value>,
    pub bid: BindId,
    pub target_bid: Option<BindId>,
    pub typ: Type,
    /* private fields */
}

Fields

id: ExprId

last: Option<Value>

bid: BindId

target_bid: Option<BindId>

typ: Type

Implementations

impl<X: GXExt> Ref<X>

pub fn set<T: Into<Value>>(&mut self, v: T) -> Result<()>

set the value of the ref r <-

This will cause all nodes dependent on this id to update. This is the same thing as the <- operator in Graphix. This does the same thing as GXHandle::set

pub fn set_deref<T: Into<Value>>(&mut self, v: T) -> Result<()>

set the value pointed to by ref *r <-

This will cause all nodes dependent on *id to update. This is the same as the *r <- operator in Graphix. This does the same thing as GXHandle::set using the target id.

pub fn update(&mut self, id: ExprId, v: &Value) -> Option<&mut Value>

Process an update

If the expr id refers to this ref, then set last to v and return a mutable reference to last, otherwise return None. This will also update last if the id matches.

Trait Implementations

impl<X: GXExt> Drop for Ref<X>

fn drop(&mut self)

Executes the destructor for this type.