我在尝试将Objective-C代码更改为Swift时遇到了麻烦.这与Parse框架有关.如果有人知道如何在Swift中编写以下代码,它将对我有很大帮助.
[user signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (!error) {
//The registration was successful, go to the wall
[self performSegueWithIdentifier:@"SignupSuccesful" sender:self];
}
#include <stdio.h>
int main(int argc, char *argv[])
{
float num1 = 0;
float num2 = 0;
float num3 = 0;
float sum = num1 + num2 + num3;
float average = sum / 3;
printf("Enter three numbers:\n"); //Enter three floats
scanf("%f %f %f", &num1, &num2, &num3); //Assign to num1, num2, num3
printf("The sum of these three numbers is %f.\n", sum);//Print sum
printf("The average of these numbers is %f.\n", average);//Print average
}
这是显示的内容.
Enter three numbers:
12.0
10.0
12.0
The sum …我想将Float转换为字符串.
myFloat: Float = 99.0
myString: String
我将如何转换myFloat为字符串,以便我可以分配以下代码
myString = myFloat
我有一个动画,当它完成时我想从它的superView中删除它.但是,我无法理解Swift的完成处理程序语法.此动画是在UIView子类中编写的.
UIView.animateWithDuration(0.5,
delay: 0.0,
options: .CurveEaseInOut,
animations: { self.frame = CGRectMake(0,0, 500, 500)},
completion: /*Magic Code here??*/)
我想把它self.removeFromSuperView()作为参数调用completion,但是在线阅读了很多文章之后我还是无法实现这一点.
谢谢!