Struct PresentValueCashFlows

pub struct PresentValueCashFlows<'a> {
    pub cash_flows: &'a [f64],
    pub discount_rate: f64,
}

The discounted value of varying periodic cash flows

Example

use com_croftsoft_core::math::finance_lib::PresentValueCashFlows;
assert_eq!(
  PresentValueCashFlows {
    cash_flows:    &[1.0], // A dollar received one year in the future
    discount_rate: 0.10,   // With inflation at 10% per year
  }.calculate(),
  0.9090909090909091);     // Will have the spending power of ~$0.91 today
assert_eq!(
  PresentValueCashFlows {
    cash_flows:    &[0.0, 1.0], // A dollar received in two years
    discount_rate: 0.10,        // With interest at 10% per year
  }.calculate(),
  0.8264462809917354);   // Would be worth the same as ~$0.83 invested today
assert_eq!(
  PresentValueCashFlows {
    cash_flows:    &[1.0, 2.0, 3.0], // $1, $2, and $3 over 3 years
    discount_rate: 0.0,              // With no inflation
  }.calculate(),
  6.0);                              // Would be worth $6 today
assert_eq!(
  PresentValueCashFlows {
    cash_flows:    &[1.0, 2.0, 3.0], // $1, $2, and $3 over 3 years
    discount_rate: 0.10,             // With inflation at 10% per year
  }.calculate(),
  4.8159278737791125);               // Would be worth ~$4.82 today

Fields

cash_flows: &'a [f64]

discount_rate: f64

The discount rate or inflation rate per time period (use 0.01 for 1%)

Implementations

impl<'a> PresentValueCashFlows<'a>

pub fn calculate(&self) -> f64

Trait Implementations

impl<'a> Clone for PresentValueCashFlows<'a>

fn clone(&self) -> PresentValueCashFlows<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for PresentValueCashFlows<'a>

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

Formats the value using the given formatter.