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Make math utils more tolerant of nil

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This commit is contained in:
Jon Staab
2024-11-14 13:13:41 -08:00
parent 8ff22b4fea
commit e45b15ffb7
1 changed files with 16 additions and 14 deletions
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packages/lib/src/Tools.ts
+16 -14
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@@ -25,33 +25,35 @@ export const identity = <T>(x: T, ...args: unknown[]) => x
export const always = <T>(x: T, ...args: unknown[]) => () => x
export const add = (x: number | Nil, y: number | Nil) => (x || 0) + (y || 0)
export const num = (x: Maybe<number>) => x || 0
export const sub = (x: number | Nil, y: number | Nil) => (x || 0) - (y || 0)
export const add = (x: Maybe<number>, y: Maybe<number>) => num(x) + num(y)
export const mul = (x: number | Nil, y: number | Nil) => (x || 0) * (y || 0)
export const sub = (x: Maybe<number>, y: Maybe<number>) => num(x) - num(y)
export const div = (x: number | Nil, y: number) => (x || 0) / y
export const mul = (x: Maybe<number>, y: Maybe<number>) => num(x) * num(y)
export const inc = (x: number | Nil) => add(x, 1)
export const div = (x: Maybe<number>, y: number) => num(x) / y
export const dec = (x: number | Nil) => sub(x, 1)
export const inc = (x: Maybe<number>) => add(x, 1)
export const lt = (x: number | Nil, y: number | Nil) => (x || 0) < (y || 0)
export const dec = (x: Maybe<number>) => sub(x, 1)
export const lte = (x: number | Nil, y: number | Nil) => (x || 0) <= (y || 0)
export const lt = (x: Maybe<number>, y: Maybe<number>) => num(x) < num(y)
export const gt = (x: number | Nil, y: number | Nil) => (x || 0) > (y || 0)
export const lte = (x: Maybe<number>, y: Maybe<number>) => num(x) <= num(y)
export const gte = (x: number | Nil, y: number | Nil) => (x || 0) >= (y || 0)
export const gt = (x: Maybe<number>, y: Maybe<number>) => num(x) > num(y)
export const max = (xs: number[]) => xs.reduce((a, b) => Math.max(a, b), 0)
export const gte = (x: Maybe<number>, y: Maybe<number>) => num(x) >= num(y)
export const min = (xs: number[]) => xs.reduce((a, b) => Math.min(a, b), 0)
export const max = (xs: Maybe<number>[]) => xs.reduce((a: number, b) => Math.max(num(a), num(b)), 0)
export const sum = (xs: number[]) => xs.reduce((a, b) => a + b, 0)
export const min = (xs: Maybe<number>[]) => xs.reduce((a: number, b) => Math.min(num(a), num(b)), 0)
export const avg = (xs: number[]) => sum(xs) / xs.length
export const sum = (xs: Maybe<number>[]) => xs.reduce((a: number, b) => add(a, b), 0)
export const avg = (xs: Maybe<number>[]) => sum(xs) / xs.length
export const drop = <T>(n: number, xs: T[]) => xs.slice(n)