Enum FmtNumSign 

pub enum FmtNumSign {
    NegativeOnly,
    Always,
    Never,
    PositiveOnly,
}

🖹 ⅀ Controls how the sign of a number is formatted.

---

^{📍 text/fmt}

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This enum specifies whether a sign glyph ('-' or '+') is emitted, independently of the numeric magnitude.

Variants

NegativeOnly

Only print ‘-’ for negative numbers. (-42 → -42, 42 → 42)

This is the default.

Always

Always print a sign: ‘-’ or ‘+’. (-42 → -42, 42 → +42)

Never

Never print a sign (absolute value). (-42 → 42, 42 → 42)

PositiveOnly

Only print ‘+’ for positive numbers. (-42 → 42, 42 → +42)

Implementations

impl FmtNumSign

pub const fn from_quant(sign: Sign) -> Self

Returns a formatting sign policy derived from a numeric sign.

This maps:

• Negative → NegativeOnly
• Zero | Positive → PositiveOnly

pub const fn emit_sign(&self, is_negative: bool) -> bool

Returns true if a sign should be emitted, depending on whether it is_negative.

Trait Implementations

impl Clone for FmtNumSign

fn clone(&self) -> FmtNumSign

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ConstInit for FmtNumSign

const INIT: Self = FmtNumSign::NegativeOnly

Returns the compile-time “initial value” for a type.

impl Copy for FmtNumSign

impl Debug for FmtNumSign

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

Formats the value using the given formatter.

impl Default for FmtNumSign

fn default() -> FmtNumSign

Returns the “default value” for a type.

impl Eq for FmtNumSign

impl Hash for FmtNumSign

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FmtNumSign

fn cmp(&self, other: &FmtNumSign) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FmtNumSign

fn eq(&self, other: &FmtNumSign) -> 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.

impl PartialOrd for FmtNumSign

fn partial_cmp(&self, other: &FmtNumSign) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for FmtNumSign