(that: BigDecimal): (self: BigDecimal) => Option.Option<BigDecimal>
(self: BigDecimal, that: BigDecimal): Option.Option<BigDecimal>Divides BigDecimals safely.
When to use
Use to divide BigDecimal values while representing division by zero as
Option.none.
Details
If the dividend is not a multiple of the divisor, the result will be a BigDecimal value
with up to the default division precision. If the divisor is 0, the result
will be Option.none().
Example (Dividing decimals safely)
import { BigDecimal, Option } from "effect"
console.log(
Option.getOrThrow(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("3")
)
)
) // BigDecimal(2)
console.log(
Option.getOrThrow(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("4")
)
)
) // BigDecimal(1.5)
console.log(
Option.isNone(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("0")
)
)
) // trueexport const const divide: {
(that: BigDecimal): (
self: BigDecimal
) => Option.Option<BigDecimal>
(
self: BigDecimal,
that: BigDecimal
): Option.Option<BigDecimal>
}
Divides BigDecimals safely.
When to use
Use to divide BigDecimal values while representing division by zero as
Option.none.
Details
If the dividend is not a multiple of the divisor, the result will be a BigDecimal value
with up to the default division precision. If the divisor is 0, the result
will be Option.none().
Example (Dividing decimals safely)
import { BigDecimal, Option } from "effect"
console.log(
Option.getOrThrow(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("3")
)
)
) // BigDecimal(2)
console.log(
Option.getOrThrow(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("4")
)
)
) // BigDecimal(1.5)
console.log(
Option.isNone(
BigDecimal.divide(
BigDecimal.fromStringUnsafe("6"),
BigDecimal.fromStringUnsafe("0")
)
)
) // true
divide: {
(that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import OptionOption.type Option<A> = Option.None<A> | Option.Some<A>The Option data type represents optional values. An Option<A> is either
Some<A>, containing a value of type A, or None, representing absence.
When to use
Use to represent initial values that may not yet exist
- Returning from partial functions (not defined for all inputs)
- Managing optional fields in data structures
Namespace containing utility types for Option.
When to use
Use to access type-level helpers associated with Option.
Option<BigDecimal>
(self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import OptionOption.type Option<A> = Option.None<A> | Option.Some<A>The Option data type represents optional values. An Option<A> is either
Some<A>, containing a value of type A, or None, representing absence.
When to use
Use to represent initial values that may not yet exist
- Returning from partial functions (not defined for all inputs)
- Managing optional fields in data structures
Namespace containing utility types for Option.
When to use
Use to access type-level helpers associated with Option.
Option<BigDecimal>
} = dual<(...args: Array<any>) => any, (self: BigDecimal, that: BigDecimal) => Option.Option<BigDecimal>>(arity: 2, body: (self: BigDecimal, that: BigDecimal) => Option.Option<BigDecimal>): ((...args: Array<any>) => any) & ((self: BigDecimal, that: BigDecimal) => Option.Option<BigDecimal>) (+1 overload)Creates a function that can be called in data-first style or data-last
(pipe-friendly) style.
When to use
Use to expose one implementation through both direct and pipe-friendly
call styles.
Details
Pass either the arity of the uncurried function or a predicate that decides
whether the current call is data-first. Arity is the common case. Use a
predicate when optional arguments make arity ambiguous.
Example (Selecting data-first or data-last style by arity)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(2, (self, that) => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Defining overloads with call signatures)
import { Function, pipe } from "effect"
const sum: {
(that: number): (self: number) => number
(self: number, that: number): number
} = Function.dual(2, (self: number, that: number): number => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Selecting data-first or data-last style with a predicate)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(
(args) => args.length === 2,
(self, that) => self + that
)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
dual(2, (self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import OptionOption.type Option<A> = Option.None<A> | Option.Some<A>The Option data type represents optional values. An Option<A> is either
Some<A>, containing a value of type A, or None, representing absence.
When to use
Use to represent initial values that may not yet exist
- Returning from partial functions (not defined for all inputs)
- Managing optional fields in data structures
Namespace containing utility types for Option.
When to use
Use to access type-level helpers associated with Option.
Option<BigDecimal> => {
if (that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue === const bigint0: bigintbigint0) {
return import OptionOption.const none: <A = never>() => Option<A>Creates an Option representing the absence of a value.
When to use
Use to represent a missing or uninitialized value, such as returning "no
result" from a function.
Details
- Returns
Option<never>, which is a subtype of Option<A> for any A
- Always returns the same singleton instance
Example (Creating an empty Option)
import { Option } from "effect"
// ┌─── Option<never>
// ▼
const noValue = Option.none()
console.log(noValue)
// Output: { _id: 'Option', _tag: 'None' }
none()
}
if (self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue === const bigint0: bigintbigint0) {
return import OptionOption.const some: <A>(value: A) => Option<A>Wraps the given value into an Option to represent its presence.
When to use
Use to wrap a known present value as Option
- Returning a successful result from a partial function
Details
- Always returns
Some<A>
- Does not filter
null or undefined; use
fromNullishOr
for that
Example (Wrapping a value)
import { Option } from "effect"
// ┌─── Option<number>
// ▼
const value = Option.some(1)
console.log(value)
// Output: { _id: 'Option', _tag: 'Some', value: 1 }
some(const zero: BigDecimalconst zero: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
const scale: numberscale = self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.scale: numberscale - that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.scale: numberscale
if (self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue === that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue) {
return import OptionOption.const some: <A>(value: A) => Option<A>Wraps the given value into an Option to represent its presence.
When to use
Use to wrap a known present value as Option
- Returning a successful result from a partial function
Details
- Always returns
Some<A>
- Does not filter
null or undefined; use
fromNullishOr
for that
Example (Wrapping a value)
import { Option } from "effect"
// ┌─── Option<number>
// ▼
const value = Option.some(1)
console.log(value)
// Output: { _id: 'Option', _tag: 'Some', value: 1 }
some(const make: (
value: bigint,
scale: number
) => BigDecimal
Creates a BigDecimal from a bigint value and a scale.
When to use
Use to construct a decimal directly from its unscaled integer value and
decimal scale.
Example (Creating decimals from bigint and scale)
import { BigDecimal } from "effect"
// Create 123.45 (12345 with scale 2)
const decimal = BigDecimal.make(12345n, 2)
console.log(BigDecimal.format(decimal)) // "123.45"
// Create 42 (42 with scale 0)
const integer = BigDecimal.make(42n, 0)
console.log(BigDecimal.format(integer)) // "42"
make(const bigint1: bigintbigint1, const scale: numberscale))
}
return import OptionOption.const some: <A>(value: A) => Option<A>Wraps the given value into an Option to represent its presence.
When to use
Use to wrap a known present value as Option
- Returning a successful result from a partial function
Details
- Always returns
Some<A>
- Does not filter
null or undefined; use
fromNullishOr
for that
Example (Wrapping a value)
import { Option } from "effect"
// ┌─── Option<number>
// ▼
const value = Option.some(1)
console.log(value)
// Output: { _id: 'Option', _tag: 'Some', value: 1 }
some(const divideWithPrecision: (
num: bigint,
den: bigint,
scale: number,
precision: number
) => BigDecimal
Internal function used for arbitrary precision division.
divideWithPrecision(self: BigDecimal(parameter) self: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue, that: BigDecimal(parameter) that: {
value: bigint;
scale: number;
normalized: BigDecimal;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
BigDecimal.value: bigintvalue, const scale: numberscale, const DEFAULT_PRECISION: 100DEFAULT_PRECISION))
})