Struct opencv::core::Exception

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

! Class passed to an error.

This class encapsulates all or almost all necessary information about the error happened in the program. The exception is usually constructed and thrown implicitly via CV_Error and CV_Error_ macros.

§See also

error

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impl Exception

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pub fn default() -> Result<Exception>

! Default constructor

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pub fn new( _code: i32, _err: &str, _func: &str, _file: &str, _line: i32 ) -> Result<Exception>

! Full constructor. Normally the constructor is not called explicitly. Instead, the macros CV_Error(), CV_Error_() and CV_Assert() are used.

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impl Boxed for Exception

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unsafe fn from_raw(ptr: <Exception as OpenCVFromExtern>::ExternReceive) -> Self

Wrap the specified raw pointer Read more
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fn into_raw(self) -> <Exception as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying raw pointer while consuming this wrapper. Read more
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fn as_raw(&self) -> <Exception as OpenCVTypeExternContainer>::ExternSend

Return the underlying raw pointer. Read more
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fn as_raw_mut( &mut self ) -> <Exception as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying mutable raw pointer Read more
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impl Debug for Exception

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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 Drop for Exception

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl ExceptionTrait for Exception

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fn as_raw_mut_Exception(&mut self) -> *mut c_void

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fn set_msg(&mut self, val: &str)

the formatted error message
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fn set_code(&mut self, val: i32)

error code see also: CVStatus
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fn set_err(&mut self, val: &str)

error description
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fn set_func(&mut self, val: &str)

function name. Available only when the compiler supports getting it
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fn set_file(&mut self, val: &str)

source file name where the error has occurred
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fn set_line(&mut self, val: i32)

line number in the source file where the error has occurred
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fn format_message(&mut self) -> Result<()>

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impl ExceptionTraitConst for Exception

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fn as_raw_Exception(&self) -> *const c_void

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fn msg(&self) -> String

the formatted error message
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fn code(&self) -> i32

error code see also: CVStatus
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fn err(&self) -> String

error description
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fn func(&self) -> String

function name. Available only when the compiler supports getting it
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fn file(&self) -> String

source file name where the error has occurred
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fn line(&self) -> i32

line number in the source file where the error has occurred
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fn what(&self) -> Result<String>

! \return the error description and the context as a text string.
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impl Send for Exception

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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<Mat> ModifyInplace for Mat
where Mat: Boxed,

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unsafe fn modify_inplace<Res>( &mut self, f: impl FnOnce(&Mat, &mut Mat) -> Res ) -> Res

Helper function to call OpenCV functions that allow in-place modification of a Mat or another similar object. By passing a mutable reference to the Mat to this function your closure will get called with the read reference and a write references to the same Mat. This is of course unsafe as it breaks the Rust aliasing rules, but it might be useful for some performance sensitive operations. One example of an OpenCV function that allows such in-place modification is imgproc::threshold. 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.