我在过去几年使用Objective-C.
现在我正在尝试 Xcode 6 beta 4与迅速.
现在我正在尝试 Xcode 6 beta 4与迅速.
我想导入一个.csv表单我的webserver到一个数组.我在Objective-C中的旧代码是：
Nsstring *stringURL = @"https:// [URL] /versionen/versionen.csv";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
Nsstring *csvResponseString = [[Nsstring alloc] initWithData:urlData encoding:NSUTF8StringEncoding];
NSArray *MZVersionDatenZeilen = [csvResponseString componentsSeparatedByString:@"\n"];
NSEnumerator *MZVersionEnumerator = [MZVersionDatenZeilen objectEnumerator];
NSMutableArray *MZVersionDatenArray = [NSMutableArray arrayWithCapacity:[MZVersionDatenZeilen count]];
Nsstring *MZVersionZeile;
while (MZVersionZeile = [MZVersionEnumerator nextObject])
{
[MZVersionDatenArray addobject:[MZVersionZeile componentsSeparatedByString:@";"]];
}
}
我怎么可以在Swift这样做？
有最佳做法 – 推荐吗？
有多个swift库可用：
CSVImporter,它是一个适用于处理大型csv文件的异步解析器.
let path = "path/to/your/CSV/file"
let importer = CSVImporter<[String]>(path: path)
importer.startImportingRecords { $0 }.onFinish { importedRecords in
for record in importedRecords {
// record is of type [String] and contains all data in a line
}
}
SwiftCSV,它是一个用于OSX和iOS的简单CSV解析库.
let csvURL = NSURL(string: "users.csv")! var error: NSErrorPointer = nil let csv = CSV(contentsOfURL: csvURL,error: error) // Rows let rows = csv.rows let headers = csv.headers //=> ["id","name","age"] let alice = csv.rows[0] //=> ["id": "1","name": "Alice","age": "18"] let bob = csv.rows[1] //=> ["id": "2","name": "Bob","age": "19"] // Columns let columns = csv.columns let names = csv.columns["name"] //=> ["Alice","Bob","Charlie"] let ages = csv.columns["age"] //=> ["18","19","20"]
和CSwiftV,它是符合rfc4180规范的csv解析器,但根据作者,它全部在内存中,因此不适合大文件.
let inputString = "Year,Make,Model,Description,Price\r\n1997,Ford,E350,descrition,3000.00\r\n1999,Chevy,Venture,another description,4900.00\r\n" let csv = CSwiftV(String: inputString) let headers = csv.headers // ["Year","Make","Model","Description","Price"] let rows = csv.rows // [ // ["1997","Ford","E350","descrition","3000.00"],// ["1999","Chevy","Venture","another description","4900.00"] // ]