65 lines
1.6 KiB
TypeScript
65 lines
1.6 KiB
TypeScript
type Action = () => void;
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namespace helpers {
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export function arraySplice<T>(arr: T[], start: number, len: number) {
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if (start < 0) {
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return;
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}
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for (let i = 0; i < len; ++i) {
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arr.removeAt(start)
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}
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}
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}
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namespace console {
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export function log(msg: string) {
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serial.writeString(msg);
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serial.writeString("\r\n");
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}
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}
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namespace Math {
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export function clamp(min: number, max:number, value:number): number {
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return Math.min(max, Math.max(min, value));
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}
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/**
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* Returns the absolute value of a number (the value without regard to whether it is positive or negative).
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* For example, the absolute value of -5 is the same as the absolute value of 5.
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* @param x A numeric expression for which the absolute value is needed.
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*/
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export function abs(x: number): number
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{
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return x < 0 ? -x : x;
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}
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/**
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* Returns the sign of the x, indicating whether x is positive, negative or zero.
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* @param x The numeric expression to test
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*/
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export function sign(x: number): number
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{
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if (x == 0) return 0;
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if (x > 0) return 1;
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return -1;
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}
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/**
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* Returns the larger of two supplied numeric expressions.
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*/
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export function max(a:number, b:number): number
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{
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if (a >= b) return a;
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return b;
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}
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/**
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* Returns the smaller of two supplied numeric expressions.
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*/
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export function min(a:number, b:number): number
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{
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if (a <= b) return a;
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return b;
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}
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}
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