Struct WriteNTuples 

pub struct WriteNTuples { /* private fields */ }

Implementations

impl WriteNTuples

pub fn create<P: AsRef<Path>>(filename: P) -> Option<WriteNTuples>

This function creates a new write-only ntuple file filename for ntuples of size size and returns a pointer to the newly created ntuple struct. Any existing file with the same name is truncated to zero length and overwritten. A pointer to memory for the current ntuple row ntuple_data must be supplied-this is used to copy ntuples in and out of the file.

pub fn write<T: Sized>(&mut self, data: &T) -> Result<(), Value>

This function writes the current ntuple ntuple->ntuple_data of size ntuple->size to the corresponding file.

pub fn bookdata<T: Sized>(&mut self, data: &T) -> Result<(), Value>

This function is a synonym for NTuples::write.

impl WriteNTuples

pub fn project<T: Sized, V: Fn(&T) -> f64, S: Fn(&T) -> bool>( &self, h: &mut Histogram, value_func: V, select_func: S, ) -> Result<(), Value>

This function updates the histogram h from the ntuple ntuple using the functions value_func and select_func. For each ntuple row where the selection function select_func is non-zero the corresponding value of that row is computed using the function value_func and added to the histogram. Those ntuple rows where select_func returns false are ignored. New entries are added to the histogram, so subsequent calls can be used to accumulate further data in the same histogram.

Trait Implementations

impl Drop for WriteNTuples

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.