43 wiersze
845 B
TypeScript
43 wiersze
845 B
TypeScript
export function float(value: string | number | undefined): number {
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if (typeof value === "number") return value;
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if (value === undefined) value = "";
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const float = parseFloat(value);
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if (isNaN(float)) {
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throw new Error(`Expected '${value}' to be a float!`);
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}
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return float;
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}
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export function flatten<T>(arr: T[][]): T[] {
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const result: T[] = [];
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for (let subarr of arr) {
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result.push(...subarr);
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}
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return result;
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}
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/**
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* Convert radians to degrees.
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*/
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export function rad2deg(radians: number): number {
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return (radians * 180) / Math.PI;
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}
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/**
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* Return an array containing the numbers from 0 to one
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* less than the given value, increasing.
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*/
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export function range(count: number): number[] {
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const result: number[] = [];
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for (let i = 0; i < count; i++) {
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result.push(i);
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}
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return result;
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}
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