Generic Initializer

init(column:)

Creates a new column of strings from a given column whose elements can be converted to strings.

Declaration

init<T>(column: MLDataColumn<T>) where T : MLDataValueConvertible
Available when Element is String.

Parameters

column

An MLDataColumn of elements convertible to String.

Discussion

Use this initializer to create a column of strings from another column. Start by creating a column that is convertible to a column of strings.

let doublesColumn = MLDataColumn([1.0, 2.718, 3.14, 4.2, 5.1])
print(doublesColumn)
// Prints [1.0, 2.718, 3.14, 4.2, 5.1]

Then use init(column:) to convert the column to a column of strings.

let stringsColumn = MLDataColumn<String>(column: doublesColumn)
print(stringsColumn)
// Prints ["1", "2.718", "3.14", "4.2", "5.1"]

See Also

Creating a Data Column by Converting Another Column

func map<T>(to: T.Type) -> MLDataColumn<T>

Creates a new column by converting this column to the given type.

init<T>(column: MLDataColumn<T>)

Creates a new column of integers from a given column whose elements can be converted to integers.

init<T>(column: MLDataColumn<T>)

Creates a new column of arrays of integers from a given column whose elements can be converted to an array of integers.

init<T>(column: MLDataColumn<T>)

Creates a new column of doubles from a given column whose elements can be converted to doubles.

init<T>(column: MLDataColumn<T>)

Creates a new column of arrays of doubles from a given column whose elements can be converted to an array of doubles.

init<T>(column: MLDataColumn<T>)

Creates a new column of arrays of strings from a given column whose elements can be converted to an array of strings.

init<T>(column: MLDataColumn<T>)

Creates a new column of machine learning sequences from a given column whose elements can be converted to sequences.

init<T>(column: MLDataColumn<T>)

Creates a new column of machine learning dictionaries from a given column whose elements can be converted to dictionaries.