# [−] [src] Enum m_captcha::errors::CaptchaError

    pub enum CaptchaError {
        LevelEmpty,
        DifficultyFactorZero,
        CaptchaDurationZero,
        SetDifficultyFactor,
        SetVisitorThreshold,
        DuplicateVisitorCount,
        DecreaseingDifficultyFactor,
        MailboxError,
        InsuffiencientDifficulty,
        StringNotFound,
        PleaseSetValue(String),
    }

Error datatype

## Variants

`LevelEmpty`

When configuring m_captcha, DefenseBuilder must be passed atleast one `LevelConfig` if not this error will arise

`DifficultyFactorZero`

Visitor count must be a whole number(zero and above). When configuring m_captcha, LevelBuilder. difficulty_factor must be set to greater than zero.

`CaptchaDurationZero`

captcha cooldown duration must be greater than 0

`SetDifficultyFactor`

Difficulty factor must be set

`SetVisitorThreshold`

Visitor threshold must be set

`DuplicateVisitorCount`

Visitor count must be Unique

`DecreaseingDifficultyFactor`

Difficulty factor should increase with level

`MailboxError`

Difficulty factor should increase with level

`InsuffiencientDifficulty`

Happens when submitted work doesn't satisfy the required difficulty factor

`StringNotFound`

Happens when submitted work is computed over string that isn't in cache

`PleaseSetValue(String)`

Used in builder structs when a value is not set

## Trait Implementations

### `impl Clone for CaptchaError` [src]

#### `fn clone(&self) -> CaptchaError` [src]

Returns a copy of the value. Read more

#### `pub fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from `source`. Read more

### `impl Debug for CaptchaError` [src]

#### `fn fmt(&self, f: &mut Formatter<'_>) -> Result` [src]

Formats the value using the given formatter. Read more

### `impl Display for CaptchaError` [src]

#### `fn fmt(&self, _derive_more_display_formatter: &mut Formatter<'_>) -> Result` [src]

Formats the value using the given formatter. Read more

### `impl Error for CaptchaError` [src]

#### `pub fn source(&self) -> Option<&(dyn Error + 'static)>`1.30.0 [src]

The lower-level source of this error, if any. Read more

#### `pub fn backtrace(&self) -> Option<&Backtrace>` [src]

🔬 This is a nightly-only experimental API. (`backtrace`)

Returns a stack backtrace, if available, of where this error occurred. Read more

#### `pub fn description(&self) -> &str` 1.0.0 [src]

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

Read more

#### `pub fn cause(&self) -> Option<&dyn Error>`1.0.0 [src]

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

### `impl PartialEq<CaptchaError> for CaptchaError` [src]

#### `fn eq(&self, other: &CaptchaError) -> bool` [src]

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

#### `fn ne(&self, other: &CaptchaError) -> bool` [src]

This method tests for `!=`.

### `impl StructuralPartialEq for CaptchaError` [src]

## Auto Trait Implementations

### `impl RefUnwindSafe for CaptchaError` [src]

### `impl Send for CaptchaError` [src]

### `impl Sync for CaptchaError` [src]

### `impl Unpin for CaptchaError` [src]

### `impl UnwindSafe for CaptchaError` [src]

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<T> Same<T> for T`

#### `type Output = T`

Should always be `Self`

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `pub fn to_owned(&self) -> T` [src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `pub fn clone_into(&self, target: &mut T)` [src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into`)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T> ToString for T where
T: Display + ?Sized,` [src]

#### `pub default fn to_string(&self) -> String` [src]

Converts the given value to a `String`. Read more

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.

### `impl<V, T> VZip<V> for T where
V: MultiLane<T>,`

#### `pub fn vzip(self) -> V`