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Stream

Struct Stream 

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pub struct Stream<T> { /* private fields */ }
Expand description

A list of T kept written: its body in the binary form, its strings its own.

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impl<T: Schema> Stream<T>

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pub fn writer() -> StreamWriter<T>

Writes items one by one (StreamWriter::push).

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pub fn len(&self) -> usize

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pub fn is_empty(&self) -> bool

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pub fn iter(&self) -> impl Iterator<Item = T> + '_

The items, read as they’re asked for; it stops at one it can’t read.

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pub fn to_vec(&self) -> Vec<T>

Every item, read now.

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pub fn bytes_len(&self) -> usize

How many bytes it takes.

Trait Implementations§

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impl<T> Clone for Stream<T>

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fn clone(&self) -> Self

Returns a duplicate 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<T> Debug for Stream<T>

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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<T> Default for Stream<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T: Schema> From<Vec<T>> for Stream<T>

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fn from(items: Vec<T>) -> Self

Converts to this type from the input type.
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impl<T: Schema> FromIterator<T> for Stream<T>

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fn from_iter<I: IntoIterator<Item = T>>(items: I) -> Self

Creates a value from an iterator. Read more
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impl<T> PartialEq for Stream<T>

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl<T: Schema> Schema for Stream<T>

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fn read(v: &ValueRef<'_>, cx: &mut Reader<'_>) -> Option<Self>

The slow way (a text file, a value): read whole, then written.

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fn pack(&self, p: &mut Packer)

In a frame it’s a list, as its shape says.

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fn shape() -> Shape

What the format looks like.
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fn write(&self) -> Value

The value, as the format writes it.
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fn encode(&self, w: &mut Writer)

Writes itself in the binary form, straight — Schema::write’s value encoded, unless the type knows better (derived ones do).
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fn decode(d: &mut Decoder<'_>) -> Option<Self>

Reads itself from the binary form, straight; None when it isn’t what Schema::encode writes — then read_bytes reads the slow way, which says what’s wrong. Through a value unless the type knows better (derived ones do).
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fn unpack(u: &mut Unpacker<'_>) -> Option<Self>

Reads itself out of a frame; None if the bytes aren’t what Schema::pack writes.
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fn absent() -> Option<Self>

The value of a field that isn’t there — None: the field is required.
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fn skip(&self) -> bool

Whether a struct leaves this field out when writing it.
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fn pack_list(items: &[Self], p: &mut Packer)

A list of these packed: a count, then each one (floats raw).
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fn unpack_list(u: &mut Unpacker<'_>) -> Option<Vec<Self>>

A list of these out of a frame.
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fn encode_list(items: &[Self], w: &mut Writer)

A list of these written straight (numbers pack theirs).
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fn decode_list(d: &mut Decoder<'_>) -> Option<Vec<Self>>

A list of these read straight.

Auto Trait Implementations§

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impl<T> Freeze for Stream<T>
where PhantomData<fn() -> T>: Freeze,

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impl<T> RefUnwindSafe for Stream<T>
where PhantomData<fn() -> T>: RefUnwindSafe,

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impl<T> Send for Stream<T>
where PhantomData<fn() -> T>: Send,

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impl<T> Sync for Stream<T>
where PhantomData<fn() -> T>: Sync,

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impl<T> Unpin for Stream<T>
where PhantomData<fn() -> T>: Unpin,

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impl<T> UnsafeUnpin for Stream<T>
where PhantomData<fn() -> T>: UnsafeUnpin,

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impl<T> UnwindSafe for Stream<T>
where PhantomData<fn() -> T>: UnwindSafe,

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.