Struct toml_edit::Array

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pub struct Array { /* private fields */ }
Expand description

Type representing a TOML array, payload of the Value::Array variant’s value

Implementations§

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impl Array

Constructors

See also FromIterator

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pub fn new() -> Self

Create an empty Array

§Examples
let mut arr = toml_edit::Array::new();
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impl Array

Formatting

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pub fn fmt(&mut self)

Auto formats the array.

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pub fn set_trailing_comma(&mut self, yes: bool)

Set whether the array will use a trailing comma

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pub fn trailing_comma(&self) -> bool

Whether the array will use a trailing comma

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pub fn set_trailing(&mut self, trailing: impl Into<RawString>)

Set whitespace after last element

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pub fn trailing(&self) -> &RawString

Whitespace after last element

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pub fn decor_mut(&mut self) -> &mut Decor

Returns the surrounding whitespace

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pub fn decor(&self) -> &Decor

Returns the surrounding whitespace

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impl Array

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pub fn iter(&self) -> ArrayIter<'_>

Returns an iterator over all values.

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pub fn iter_mut(&mut self) -> ArrayIterMut<'_>

Returns an iterator over all values.

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pub fn len(&self) -> usize

Returns the length of the underlying Vec.

In some rare cases, placeholder elements will exist. For a more accurate count, call a.iter().count()

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");
assert_eq!(arr.len(), 2);
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pub fn is_empty(&self) -> bool

Return true iff self.len() == 0.

§Examples
let mut arr = toml_edit::Array::new();
assert!(arr.is_empty());

arr.push(1);
arr.push("foo");
assert!(! arr.is_empty());
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pub fn clear(&mut self)

Clears the array, removing all values. Keeps the allocated memory for reuse.

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pub fn get(&self, index: usize) -> Option<&Value>

Returns a reference to the value at the given index, or None if the index is out of bounds.

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pub fn get_mut(&mut self, index: usize) -> Option<&mut Value>

Returns a reference to the value at the given index, or None if the index is out of bounds.

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pub fn push<V: Into<Value>>(&mut self, v: V)

Appends a new value to the end of the array, applying default formatting to it.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");
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pub fn push_formatted(&mut self, v: Value)

Appends a new, already formatted value to the end of the array.

§Examples
let formatted_value = "'literal'".parse::<toml_edit::Value>().unwrap();
let mut arr = toml_edit::Array::new();
arr.push_formatted(formatted_value);
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pub fn insert<V: Into<Value>>(&mut self, index: usize, v: V)

Inserts an element at the given position within the array, applying default formatting to it and shifting all values after it to the right.

§Panics

Panics if index > len.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");

arr.insert(0, "start");
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pub fn insert_formatted(&mut self, index: usize, v: Value)

Inserts an already formatted value at the given position within the array, shifting all values after it to the right.

§Panics

Panics if index > len.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");

let formatted_value = "'start'".parse::<toml_edit::Value>().unwrap();
arr.insert_formatted(0, formatted_value);
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pub fn replace<V: Into<Value>>(&mut self, index: usize, v: V) -> Value

Replaces the element at the given position within the array, preserving existing formatting.

§Panics

Panics if index >= len.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");

arr.replace(0, "start");
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pub fn replace_formatted(&mut self, index: usize, v: Value) -> Value

Replaces the element at the given position within the array with an already formatted value.

§Panics

Panics if index >= len.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");

let formatted_value = "'start'".parse::<toml_edit::Value>().unwrap();
arr.replace_formatted(0, formatted_value);
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pub fn remove(&mut self, index: usize) -> Value

Removes the value at the given index.

§Examples
let mut arr = toml_edit::Array::new();
arr.push(1);
arr.push("foo");

arr.remove(0);
assert_eq!(arr.len(), 1);
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pub fn retain<F>(&mut self, keep: F)
where F: FnMut(&Value) -> bool,

Retains only the values specified by the keep predicate.

In other words, remove all values for which keep(&value) returns false.

This method operates in place, visiting each element exactly once in the original order, and preserves the order of the retained elements.

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pub fn sort_by<F>(&mut self, compare: F)
where F: FnMut(&Value, &Value) -> Ordering,

Sorts the slice with a comparator function.

This sort is stable (i.e., does not reorder equal elements) and O(n * log(n)) worst-case.

The comparator function must define a total ordering for the elements in the slice. If the ordering is not total, the order of the elements is unspecified. An order is a total order if it is (for all a, b and c):

  • total and antisymmetric: exactly one of a < b, a == b or a > b is true, and
  • transitive, a < b and b < c implies a < c. The same must hold for both == and >.

For example, while f64 doesn’t implement Ord because NaN != NaN, we can use partial_cmp as our sort function when we know the slice doesn’t contain a NaN.

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pub fn sort_by_key<K, F>(&mut self, f: F)
where F: FnMut(&Value) -> K, K: Ord,

Sorts the array with a key extraction function.

This sort is stable (i.e., does not reorder equal elements) and O(m * n * log(n)) worst-case, where the key function is O(m).

Trait Implementations§

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impl Clone for Array

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fn clone(&self) -> Array

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Array

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

Formats the value using the given formatter. Read more
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impl Default for Array

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fn default() -> Array

Returns the “default value” for a type. Read more
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impl Display for Array

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

Formats the value using the given formatter. Read more
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impl<V: Into<Value>> Extend<V> for Array

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fn extend<T: IntoIterator<Item = V>>(&mut self, iter: T)

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl From<Array> for Value

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fn from(array: Array) -> Self

Converts to this type from the input type.
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impl<V: Into<Value>> FromIterator<V> for Array

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fn from_iter<I>(iter: I) -> Self
where I: IntoIterator<Item = V>,

Creates a value from an iterator. Read more
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impl<'s> IntoIterator for &'s Array

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type Item = &'s Value

The type of the elements being iterated over.
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type IntoIter = Box<dyn Iterator<Item = &'s Value> + 's>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl IntoIterator for Array

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type Item = Value

The type of the elements being iterated over.
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type IntoIter = Box<dyn Iterator<Item = Value>>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more

Auto Trait Implementations§

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impl RefUnwindSafe for Array

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impl Send for Array

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impl Sync for Array

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impl Unpin for Array

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impl UnwindSafe for Array

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.