Enum textwrap::core::WrapAlgorithm[][src]

pub enum WrapAlgorithm {

Wrapping algorithms.

After a text has been broken into Fragments, the one now has to decide how to break the fragments into lines. The simplest algorithm for this is implemented by wrap_first_fit: it uses no look-ahead and simply adds fragments to the line as long as they fit. However, this can lead to poor line breaks if a large fragment almost-but-not-quite fits on a line. When that happens, the fragment is moved to the next line and it will leave behind a large gap. A more advanced algorithm, implemented by wrap_optimal_fit, will take this into account. The optimal-fit algorithm considers all possible line breaks and will attempt to minimize the gaps left behind by overly short lines.

While both algorithms run in linear time, the first-fit algorithm is about 4 times faster than the optimal-fit algorithm.



Use an advanced algorithm which considers the entire paragraph to find optimal line breaks. Implemented by wrap_optimal_fit.

Note: Only available when the smawk Cargo feature is enabled.


Use a fast and simple algorithm with no look-ahead to find line breaks. Implemented by wrap_first_fit.

Trait Implementations

impl Clone for WrapAlgorithm[src]

impl Copy for WrapAlgorithm[src]

impl Debug for WrapAlgorithm[src]

impl Eq for WrapAlgorithm[src]

impl PartialEq<WrapAlgorithm> for WrapAlgorithm[src]

impl StructuralEq for WrapAlgorithm[src]

impl StructuralPartialEq for WrapAlgorithm[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T> ToOwned for T where
    T: Clone

type Owned = T

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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
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type Error = <U as TryFrom<T>>::Error

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