Struct TodayFn 

pub struct TodayFn;

Returns the current date as a volatile serial value.

Remarks

• TODAY is volatile and recalculates each time the workbook recalculates.
• The result is an integer date serial with no time fraction.
• Serial output respects the active workbook date system (1900 or 1904).

Examples

title: "TODAY has no time fraction"
formula: "=TODAY()=INT(TODAY())"
expected: true

title: "Date arithmetic with TODAY"
formula: "=TODAY()+7-TODAY()"
expected: 7

related:
  - NOW
  - DATE
  - WORKDAY
faq:
  - q: "Will TODAY include a time-of-day fraction?"
    a: "No. TODAY always returns an integer serial date, so its fractional part is always 0."

Trait Implementations

impl Debug for TodayFn

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

Formats the value using the given formatter.

impl Function for TodayFn

[formualizer-docgen:schema:start] Name: TODAY Type: TodayFn Min args: 0 Max args: 0 Variadic: false Signature: TODAY() Arg schema: [] Caps: VOLATILE [formualizer-docgen:schema:end]

fn caps(&self) -> FnCaps

Capability flags for this function

fn name(&self) -> &'static str

fn min_args(&self) -> usize

fn eval<'a, 'b, 'c>( &self, _args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

The unified evaluation path.

fn namespace(&self) -> &'static str

fn variadic(&self) -> bool

fn volatile(&self) -> bool

fn arg_schema(&self) -> &'static [ArgSchema]

fn aliases(&self) -> &'static [&'static str]

Optional list of additional alias names (case-insensitive) that should resolve to this function. Default: empty slice. Implementors can override to expose legacy names. Returned slice must have ’static lifetime (typically a static array reference).

fn function_salt(&self) -> u64

fn eval_reference<'a, 'b, 'c>( &self, _args: &'c [ArgumentHandle<'a, 'b>], _ctx: &dyn FunctionContext<'b>, ) -> Option<Result<ReferenceType, ExcelError>>

Optional reference result path. Only called by the interpreter/engine when the callsite expects a reference (e.g., range combinators, by-ref argument positions, or spill sources).

fn dispatch<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

Dispatch to the unified evaluation path with automatic argument validation.