Enum git_ref::transaction::Create

pub enum Create {
    Only,
    OrUpdate {
        previous: Option<Target>,
    },
}

A way to determine if a value should be created or created or updated. In the latter case the previous value can be specified to indicate to what extend the previous value matters.

Variants

Only

Create a ref only. This fails if the ref exists and does not match the desired new value.

OrUpdate

Create or update the reference with the previous value being controlling how to deal with existing ref values.

Fields of OrUpdate

previous: Option<Target>

Interpret…

• None so that existing values do not matter at all. This is the mode that always creates or updates a reference to the desired new value.
• Some(Target::Peeled(ObjectId::null_sha1()) so that the reference is required to exist even though its value doesn’t matter.
• Some(value) so that the reference is required to exist and have the given value.

Trait Implementations

impl Clone for Create

fn clone(&self) -> Create

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Create

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

Formats the value using the given formatter.

impl Hash for Create

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for Create

fn cmp(&self, other: &Create) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Create> for Create

fn eq(&self, other: &Create) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Create) -> bool

This method tests for !=.

impl PartialOrd<Create> for Create

fn partial_cmp(&self, other: &Create) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Create

impl StructuralEq for Create

impl StructuralPartialEq for Create