pub const fn new() -> FormattingOptions

Construct a new FormatterBuilder with the supplied Write trait object for output that is equivalent to the {} formatting specifier:

• no flags,
• filled with spaces,
• no alignment,
• no width,
• no precision, and
• no DebugAsHex output mode.

pub const fn sign(&mut self, sign: Option<Sign>) -> &mut FormattingOptions

Sets or removes the sign (the + or the - flag).

• +: This is intended for numeric types and indicates that the sign should always be printed. By default only the negative sign of signed values is printed, and the sign of positive or unsigned values is omitted. This flag indicates that the correct sign (+ or -) should always be printed.
• -: Currently not used

pub const fn sign_aware_zero_pad(
    &mut self,
    sign_aware_zero_pad: bool,
) -> &mut FormattingOptions

Sets or unsets the 0 flag.

This is used to indicate for integer formats that the padding to width should both be done with a 0 character as well as be sign-aware

pub const fn alternate(&mut self, alternate: bool) -> &mut FormattingOptions

Sets or unsets the # flag.

This flag indicates that the “alternate” form of printing should be used. The alternate forms are:

• Debug : pretty-print the Debug formatting (adds linebreaks and indentation)
• LowerHex as well as UpperHex - precedes the argument with a 0x
• Octal - precedes the argument with a 0o
• Binary - precedes the argument with a 0b

pub const fn fill(&mut self, fill: char) -> &mut FormattingOptions

Sets the fill character.

The optional fill character and alignment is provided normally in conjunction with the width parameter. This indicates that if the value being formatted is smaller than width some extra characters will be printed around it.

pub const fn align(
    &mut self,
    align: Option<Alignment>,
) -> &mut FormattingOptions

Sets or removes the alignment.

The alignment specifies how the value being formatted should be positioned if it is smaller than the width of the formatter.

pub const fn width(&mut self, width: Option<u16>) -> &mut FormattingOptions

Sets or removes the width.

This is a parameter for the “minimum width” that the format should take up. If the value’s string does not fill up this many characters, then the padding specified by FormattingOptions::fill/FormattingOptions::align will be used to take up the required space.

pub const fn precision(
    &mut self,
    precision: Option<u16>,
) -> &mut FormattingOptions

Sets or removes the precision.

• For non-numeric types, this can be considered a “maximum width”. If the resulting string is longer than this width, then it is truncated down to this many characters and that truncated value is emitted with proper fill, alignment and width if those parameters are set.
• For integral types, this is ignored.
• For floating-point types, this indicates how many digits after the decimal point should be printed.

pub const fn debug_as_hex(
    &mut self,
    debug_as_hex: Option<DebugAsHex>,
) -> &mut FormattingOptions

Specifies whether the Debug trait should use lower-/upper-case hexadecimal or normal integers

pub const fn get_sign(&self) -> Option<Sign>

Returns the current sign (the + or the - flag).

pub const fn get_sign_aware_zero_pad(&self) -> bool

Returns the current 0 flag.

pub const fn get_alternate(&self) -> bool

Returns the current # flag.

pub const fn get_fill(&self) -> char

Returns the current fill character.

pub const fn get_align(&self) -> Option<Alignment>

Returns the current alignment.

pub const fn get_width(&self) -> Option<u16>

Returns the current width.

pub const fn get_precision(&self) -> Option<u16>

Returns the current precision.

pub const fn get_debug_as_hex(&self) -> Option<DebugAsHex>

Returns the current precision.

pub const fn create_formatter<'a>(
    self,
    write: &'a mut dyn Write,
) -> Formatter<'a>

Creates a Formatter that writes its output to the given Write trait.

You may alternatively use Formatter::new().

fn clone(&self) -> FormattingOptions

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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

Formats the value using the given formatter. Read more

fn default() -> FormattingOptions

Same as FormattingOptions::new().

fn eq(&self, other: &FormattingOptions) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

unsafe fn clone_to_uninit(&self, dest: *mut u8)

Performs copy-assignment from self to dest. Read more

fn from(t: T) -> T

Returns the argument unchanged.

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.