TryCF Gist

trycf-gist-1775026740516-1644e35b-3bf9-ae07-951f-09b6de0c7550.cfm

<cfscript>

	public boolean function isStrictNumeric(any value) {
		if (!isNumeric(arguments.value)) return false;
		// 001 is not strict numeric -> serialize as string
		if (arguments.value >= 1 && left(arguments.value, 1) == "0") return false;
		// .111111 is not strict numeric -> serialize as string
		if (left(arguments.value, 1) == ".") return false;
		// +111111 is not strict numeric -> serialize as string
		if (left(arguments.value, 1) == "+") return false;
		return true;
	}
	
	public boolean function isInt(any value) {
		return isStrictNumeric(arguments.value) && arguments.value == int(arguments.value);
	}
	
	public boolean function isDouble(any value) {
		return isStrictNumeric(arguments.value) && arguments.value != int(arguments.value);
	}	
	
	public boolean function isBool(any value) {
		return arguments.value === true || arguments.value === false;
	}
	
	public boolean function isFunc(any value) {
		return !isNull(arguments.value) && (isCustomFunction(arguments.value) || isClosure(arguments.value));
	}
	
	values = [.1 * 1, 1, 0, -1, -1.1, 1.1, 0.99999999, -0.99999999999, "YES", true, false, "false", function(a,b) {return a;}];
	for (value in values) {
    	writeDump({
    	    "value" : value,
    	    "isInt" : isInt(value),
    	    "isDouble": isDouble(value),
    	    "isBool" : isBool(value),
    	    "isFunc" : isFunc(value)
    	});
    }

</cfscript>