Struct ConstString

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pub struct ConstString<const N: usize>(/* private fields */);
Expand description

A string with a fixed-capacity array as storage to be used in compile-time constants.

Causes an unfriendly compile-time error when the size of the string exceeds its capacity.

This struct always upholds that it contains valid utf-8.

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impl<const N: usize> ConstString<N>

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pub const unsafe fn from_bytes(slice: &[u8]) -> Self

Creates a new ConstString from a slice of bytes.

Will return [ConstString::ErrTooLong] if the array is longer than the capacity of the ConstString.

§Safety

The slice must contain valid utf-8.

§Panics

If the length of the slice exceeds the capacity of the array.

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pub const fn from_str(string: &str) -> Self

Creates a new ConstString from a &str.

§Panics

If the length of the string exceeds the capacity of the array.

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pub const unsafe fn with_bytes(self, other: &[u8]) -> Self

Extends the array in a ConstString by value with a slice of bytes.

§Safety

The slice must contain valid utf-8.

§Panics

If the length of the string exceeds the remaining space in the array.

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pub const fn with_str(self, other: &str) -> Self

Extends the array in a ConstString by value with a string slice.

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pub const fn with<const M: usize>(self, other: ConstString<M>) -> Self

Extends the array in a ConstString by value with another ConstString.

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pub const fn as_str(&self) -> &str

Returns the string in this ConstString as an &str

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impl<const N: usize> Clone for ConstString<N>

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fn clone(&self) -> ConstString<N>

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<const N: usize> Debug for ConstString<N>

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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<const N: usize> PartialEq for ConstString<N>

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fn eq(&self, other: &ConstString<N>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<const N: usize> Copy for ConstString<N>

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impl<const N: usize> StructuralPartialEq for ConstString<N>

Auto Trait Implementations§

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impl<const N: usize> Freeze for ConstString<N>

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impl<const N: usize> RefUnwindSafe for ConstString<N>

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impl<const N: usize> Send for ConstString<N>

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impl<const N: usize> Sync for ConstString<N>

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impl<const N: usize> Unpin for ConstString<N>

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impl<const N: usize> UnwindSafe for ConstString<N>

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, 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.