Question

CREATE OR REPLACE FUNCTION is_business_day(p_date date)
  RETURNS boolean AS
$BODY$
DECLARE
    is_business_day boolean;
    dow int;
BEGIN
    dow := extract('dow' from p_date);

    IF dow = 6 OR dow = 0
        THEN
        is_business_day := FALSE;
    ELSE
        is_business_day := TRUE;
    END IF;

    RETURN is_business_day ;
END;
$BODY$
  LANGUAGE plpgsql IMMUTABLE;



CREATE OR REPLACE FUNCTION working_date(date start_date, int duration)
  RETURNS date AS
$BODY$
DECLARE 
    ret_date date;
    loop_date date;
BEGIN   
    --add days
    ret_date := start_date + (duration - 1);

    loop_date := start_date + 1; 
    --add extra day for each no business day between start_date and ret_date
    WHILE loop_date <= ret_date LOOP
        IF not is_business_day(loop_date) THEN
            ret_date := ret_date + 1;
        END IF;
        loop_date := loop_date + 1;
    END LOOP;
    --add day if ret_date is no business day
    WHILE not is_business_day(ret_date) LOOP
        ret_date := ret_date + 1;
    END LOOP;

    RETURN ret_date;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE SECURITY DEFINER
  COST 100;

请在swift中转换此目标c函数

Answer 1

看起来像

func connectDataReceived(connection: NSURLConnection, data: NSData){
    let str = NSString(data: data, encoding: NSUTF8StringEncoding)!
    print(str)
 }

Answer 2

我发布的答案非常简单，您可以轻松理解。

let strData = "A384CVHJLWHBWRLBRH2348945607275epiuthgthgbpbfvrvdiac15szerqTUDGA89ty757909577257908hbdshjkbhvalasdhbchdcvgcvjvgvaKLOYAQCGHQ"
let data = strData.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!
let str = NSString(data: data, encoding: NSUTF8StringEncoding)!
print("\(str)")

如何将stringWithUTF8String转换为swift

2 个答案: