Struct WorkdayFn 

pub struct WorkdayFn;

Returns the date serial that is a given number of weekdays from a start date.

Remarks

• Positive days moves forward; negative days moves backward.
• Weekends are fixed to Saturday and Sunday.
• The optional holidays argument is currently accepted but ignored; holiday exclusions are not yet supported.
• Input and output serials use Excel 1900 date mapping.

Examples

title: "Move forward by five workdays"
formula: "=WORKDAY(45292, 5)"
expected: 45299

title: "Holiday argument currently has no effect"
formula: "=WORKDAY(45292, 5, 45293)"
expected: 45299

related:
  - NETWORKDAYS
  - WEEKDAY
  - TODAY
faq:
  - q: "Does WORKDAY include the start date when days=0?"
    a: "Yes. With zero offset, WORKDAY returns the start date serial unchanged; nonzero offsets skip weekend days while stepping."

Trait Implementations

impl Debug for WorkdayFn

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

Formats the value using the given formatter.

impl Function for WorkdayFn

[formualizer-docgen:schema:start] Name: WORKDAY Type: WorkdayFn Min args: 2 Max args: variadic Variadic: true Signature: WORKDAY(arg1: number@scalar, arg2: number@scalar, arg3…: any@scalar) Arg schema: arg1{kinds=number,required=true,shape=scalar,by_ref=false,coercion=NumberLenientText,max=None,repeating=None,default=false}; arg2{kinds=number,required=true,shape=scalar,by_ref=false,coercion=NumberLenientText,max=None,repeating=None,default=false}; arg3{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 variadic(&self) -> bool

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 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.