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Entry

Struct Entry 

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pub struct Entry<'a> {
    pub tag: u16,
    pub typ: u16,
    pub count: u32,
    pub order: ByteOrder,
    pub data: &'a [u8],
    pub value_field: u32,
    pub value_pos: usize,
}
Expand description

A single IFD entry. data holds the raw value bytes (inline or referenced).

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§tag: u16§typ: u16§count: u32§order: ByteOrder§data: &'a [u8]

Raw value bytes (count * type_size bytes, possibly truncated if lenient).

§value_field: u32

The raw 4-byte value/offset field (offset relative to the IFD base).

§value_pos: usize

Absolute position of the value bytes inside the slice the TIFF was parsed from.

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impl<'a> Entry<'a>

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pub fn len(&self) -> usize

Number of values that are actually available.

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pub fn is_empty(&self) -> bool

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pub fn u32(&self, i: usize) -> Option<u32>

Value i as u32 (integer types; rationals are truncated).

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pub fn u16(&self, i: usize) -> Option<u16>

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pub fn i32(&self, i: usize) -> Option<i32>

Value i as signed integer.

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pub fn f64(&self, i: usize) -> Option<f64>

Value i as f64 (any numeric type).

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pub fn f32(&self, i: usize) -> Option<f32>

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pub fn u32s(&self) -> Vec<u32>

All values as u32.

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pub fn f64s(&self) -> Vec<f64>

All values as f64.

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pub fn f32s(&self) -> Vec<f32>

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pub fn string(&self) -> String

Value as an ASCII string (trimmed at the first NUL, whitespace trimmed).

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pub fn bytes(&self) -> &'a [u8] ⓘ

Raw value bytes.

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impl<'a> Clone for Entry<'a>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<'a> Copy for Entry<'a>

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impl Debug for Entry<'_>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for Entry<'a>

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impl<'a> RefUnwindSafe for Entry<'a>

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impl<'a> Send for Entry<'a>

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impl<'a> Sync for Entry<'a>

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impl<'a> Unpin for Entry<'a>

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impl<'a> UnsafeUnpin for Entry<'a>

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impl<'a> UnwindSafe for Entry<'a>

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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.