These classes are used to define callback behaviors.
new()ChunkCallback$new(callback)
receive()ChunkCallback$receive(data, index)
continue()ChunkCallback$continue()
result()ChunkCallback$result()
finally()ChunkCallback$finally()
clone()The objects of this class are cloneable with this method.
ChunkCallback$clone(deep = FALSE)deepWhether to make a deep clone.
meltr::ChunkCallback -> SideEffectChunkCallback
Inherited methods
new()SideEffectChunkCallback$new(callback)
receive()SideEffectChunkCallback$receive(data, index)
continue()SideEffectChunkCallback$continue()
clone()The objects of this class are cloneable with this method.
SideEffectChunkCallback$clone(deep = FALSE)deepWhether to make a deep clone.
meltr::ChunkCallback -> DataFrameCallback
Inherited methods
new()DataFrameCallback$new(callback)
receive()DataFrameCallback$receive(data, index)
result()DataFrameCallback$result()
finally()DataFrameCallback$finally()
clone()The objects of this class are cloneable with this method.
DataFrameCallback$clone(deep = FALSE)deepWhether to make a deep clone.
meltr::ChunkCallback -> ListCallback
Inherited methods
new()ListCallback$new(callback)
receive()ListCallback$receive(data, index)
result()ListCallback$result()
finally()ListCallback$finally()
clone()The objects of this class are cloneable with this method.
ListCallback$clone(deep = FALSE)deepWhether to make a deep clone.
meltr::ChunkCallback -> AccumulateCallback
Inherited methods
new()AccumulateCallback$new(callback, acc = NULL)
receive()AccumulateCallback$receive(data, index)
result()AccumulateCallback$result()
clone()The objects of this class are cloneable with this method.
AccumulateCallback$clone(deep = FALSE)deepWhether to make a deep clone.
Callback interface definition, all callback functions should inherit from this class.
Callback function that is used only for side effects, no results are returned.
Callback function that combines each result together at the end.
Callback function that accumulates a single result. Requires the parameter acc to specify
the initial value of the accumulator. The parameter acc is NULL by default.
Other chunked:
melt_delim_chunked()