Struct PrintfFmt

pub struct PrintfFmt<T: PrintfArgs> { /* private fields */ }

A type-safe wrapper around a C-style string verified to be compatible with use as a format string for printf(3)-style functions called with T as the varargs.

Implementations

impl<T: PrintfArgs> PrintfFmt<T>

pub const fn new_or_panic(fmt: &'static str) -> Self

If fmt represents a valid, supported format string for printf(3) when given Rust-side arguments T, returns a PrintfFmt; panics otherwise.

Panics

See above.

pub const fn new(fmt: &'static str) -> Result<Self, ()>

If fmt represents a valid, supported format string for printf(3) when given Rust-side arguments T, returns it as a PrintfFmt.

Errors

Returns Err(()) if fmt is not a valid, supported format string corresponding to varargs T.

pub const fn as_ptr(self) -> *const c_char

Returns a pointer to the beginning of the format string.

Trait Implementations

impl<T: PrintfArgs> AsRef<CStr> for PrintfFmt<T>

fn as_ref(&self) -> &CStr

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: PrintfArgs> Clone for PrintfFmt<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + PrintfArgs> Debug for PrintfFmt<T>

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

Formats the value using the given formatter.

impl<T: PrintfArgs> Copy for PrintfFmt<T>

impl<T: PrintfArgs> Send for PrintfFmt<T>

impl<T: PrintfArgs> Sync for PrintfFmt<T>