Struct dcsv::VirtualArray

pub struct VirtualArray {
    pub columns: Vec<Column>,
    pub rows: Vec<Vec<Value>>,
}

Virtual data which contains csv information in a form of arrays.

• VirtualArray holds row information as vectors. Therefore indexing is generally faster than virtual data struct.
• VirtualArray allows duplicate columns
• VirtualArray doesn’t allow limiters.

Fields

columns: Vec<Column>

rows: Vec<Vec<Value>>

Trait Implementations

impl Clone for VirtualArray

fn clone(&self) -> VirtualArray

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for VirtualArray

fn default() -> Self

Returns the “default value” for a type.

impl Display for VirtualArray

to_string implementation for virtual array

This returns csv value string

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl VCont for VirtualArray

fn rename_column(
    &mut self,
    column_index: usize,
    new_name: &str
) -> DcsvResult<()>

Rename a column

This will simply change the name of the column and doesn’t affect rows.

fn set_column(&mut self, column_index: usize, value: Value) -> DcsvResult<()>

Set values to a column

Given value will override every row’s value

fn edit_row(
    &mut self,
    row_index: usize,
    values: &[Option<Value>]
) -> DcsvResult<()>

Edit a row

Only edit row’s cell when value is not none

fn insert_row(
    &mut self,
    row_index: usize,
    source: Option<&[Value]>
) -> DcsvResult<()>

Insert a row to given index

This can yield out of range error

fn delete_row(&mut self, row_index: usize) -> bool

Delete a row with given row_index

This doesn’t fail but silently do nothing if index is out of range

fn insert_column(
    &mut self,
    column_index: usize,
    column_name: &str
) -> DcsvResult<()>

Insert a column with given column informations

• column_index : Position to put column
• column_name : New column name

fn delete_column(&mut self, column_index: usize) -> DcsvResult<()>

Delete a column with given column index

fn move_column(
    &mut self,
    src_index: usize,
    target_index: usize
) -> DcsvResult<()>

Move a given column to target column index

fn new() -> Self

Create empty virtual container

fn get_row_count(&self) -> usize

Get total rows count

fn get_column_count(&self) -> usize

Get total columns count

fn drop_data(&mut self)

Drop all data from virtual data

fn get_cell(&self, x: usize, y: usize) -> Option<&Value>

get cell data by coordinate

fn set_cell(&mut self, x: usize, y: usize, value: Value) -> DcsvResult<()>

Set cell value by coordinate

fn move_row(&mut self, src_index: usize, target_index: usize) -> DcsvResult<()>

Move a given row to a target row index

fn set_row(&mut self, row_index: usize, values: &[Value]) -> DcsvResult<()>

Set values to a row

fn apply_all<F: FnMut(&mut Value)>(&mut self, f: F)

Apply closure to all values