Struct dcsv::VirtualArray

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

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 doesn’t allow limiters. Values in VirtualArray can be indexed only with colum index.

VirtualArray has two variables which are

• columns
• rows

Fields

columns: Vec<String>

rows: Vec<Vec<String>>

Implementations

impl VirtualArray

pub fn new() -> Self

Create empty virtual data

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

Set cell’s value with given string value

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

Move given row to a target row index

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

Move a given column to target column index

pub 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.

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

Set values to a column

Given value will override every row’s value

pub fn edit_row(
    &mut self,
    row_index: usize,
    values: Vec<Option<&str>>
) -> DcsvResult<()>

Edit a row

Only edit row’s cell when value is not none

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

Set values to a row

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

get cell data by coordinate

pub fn insert_row<T: AsRef<str>>(
    &mut self,
    row_index: usize,
    source: Option<&[T]>
) -> DcsvResult<()>

Insert a row to given index

This can yield out of range error

pub fn delete_row(&mut self, row_index: usize)

Delete a row with given row_index

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

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

Insert a column with given column informations

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

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

Delete a column with given column index

pub fn get_row_count(&self) -> usize

Get total rows count

pub fn get_column_count(&self) -> usize

Get total columns count

pub fn drop_data(&mut self)

Drop all data from virtual data

Trait Implementations

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.