如何添加双重图像？(how can add double image to?)

不知道我在这里做错了什么。我得到的错误是：

let images = [UIImage(named: "Image1")!, UIImage(named: "Image2")!, UIImage(named: "Image3")!] let yPositions = [0, 204, 693.5, 1186.5] for (index, image) in images.enumerate() { let imageView = UIImageView(image: image) if let yPosition = yPositions[index] { imageView.frame = CGRectMake(0, CGFloat(yPosition), 375, 395) } }

Not sure what I'm doing wrong here. The error I'm getting is:

最满意答案

这应该更接近你的意图。

将数据读入dict并计算出现次数：

def count_authors(file_name): invert = {} for k, v in load_library(file_name).items(): invert[v] = invert.get(v, 0) + 1 return invert

然后将数据写入另一个文件：

def write_authors_counts(counts, file_name): with open(file_name, 'w') as fobj: for name, count in counts.items(): fobj.write('{}: {}\n'.format(name, count)

将两个功能放在一起：

def report_author_counts(lib_fpath, rep_filepath): counts = count_authors(lib_fpath) write_authors_counts(counts, rep_filepath))

调用你的功能：

write_authors_counts('file.txt', 'report.txt'))

This should be closer to what you intent to do.

Read the data into a dict and count the occurrences:

def count_authors(file_name): invert = {} for k, v in load_library(file_name).items(): invert[v] = invert.get(v, 0) + 1 return invert

Then write the data into another file:

def write_authors_counts(counts, file_name): with open(file_name, 'w') as fobj: for name, count in counts.items(): fobj.write('{}: {}\n'.format(name, count)

Put both functions together:

def report_author_counts(lib_fpath, rep_filepath): counts = count_authors(lib_fpath) write_authors_counts(counts, rep_filepath))

Call your function:

write_authors_counts('file.txt', 'report.txt'))

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