Struct TimeValueFn 

pub struct TimeValueFn;

Parses a time string and returns its fractional-day serial value.

Remarks

• Supported formats include 24-hour and AM/PM text forms with optional seconds.
• Result is a fraction in the range 0.0..1.0 and does not include a date component.
• Because only a time fraction is returned, workbook date-system choice does not affect output.

Examples

title: "Parse 24-hour time"
formula: '=TIMEVALUE("14:30")'
expected: 0.6041666667

title: "Parse 12-hour AM/PM time"
formula: '=TIMEVALUE("02:30 PM")'
expected: 0.6041666667

related:
  - TIME
  - DATEVALUE
  - SECOND
faq:
  - q: "Does TIMEVALUE depend on the 1900 vs 1904 date system?"
    a: "No. TIMEVALUE returns only a time fraction, so date-system selection does not change the result."

Trait Implementations

impl Debug for TimeValueFn

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

Formats the value using the given formatter.

impl Function for TimeValueFn

[formualizer-docgen:schema:start] Name: TIMEVALUE Type: TimeValueFn Min args: 1 Max args: 1 Variadic: false Signature: TIMEVALUE(arg1: any@scalar) Arg schema: arg1{kinds=any,required=true,shape=scalar,by_ref=false,coercion=None,max=None,repeating=None,default=false} Caps: PURE [formualizer-docgen:schema:end]

fn caps(&self) -> FnCaps

Capability flags for this function

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

fn min_args(&self) -> usize

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

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 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.