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IsFloat<T>

IsFloat<T> = T extends number ? `${T}` extends `${number}e${infer E extends "-" | "+"}${number}` ? E extends "-" ? true : false : `${T}` extends `${number}.${number}` ? true : false : false

Defined in: packages/react-querybuilder/src/types/type-fest/is-float.ts:32

Returns a boolean for whether the given number is a float, like 1.5 or -1.5.

Use-case:

  • If you want to make a conditional branch based on the result of whether a number is a float or not.

Type Parameters​

Type Parameter
T

Example​

import type {IsFloat, PositiveInfinity} from "type-fest";

type A = IsFloat<1.5>;
//=> true

type B = IsFloat<-1.5>;
//=> true

type C = IsFloat<1e-7>;
//=> true

type D = IsFloat<1.0>;
//=> false

type E = IsFloat<PositiveInfinity>;
//=> false

type F = IsFloat<1.23e+21>;
//=> false
caution

API documentation is generated from the latest commit on the main branch. It may be somewhat inconsistent with official releases of React Query Builder.