ds-algo-study/DS-n-Algos/Numbers_Math/isBase/numbase.js

Just experimenting with publishing a package

function isDecimalDigit(curChar) {
        return 0x30 <= curChar && curChar <= 0x39;  // 0..9
    }

    function isHexDigit(curChar) {
        return 0x30 <= curChar && curChar <= 0x39 ||  // 0..9
            0x61 <= curChar && curChar <= 0x66 ||     // a..f
            0x41 <= curChar && curChar <= 0x46;       // A..F
    }

    function isOctalDigit(curChar) {
        return curChar >= 0x30 && curChar <= 0x37;  // 0..7
    }