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?
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 {let csvURL = NSURL(string: "users.csv")!var error: NSErrorPointer = nillet csv = CSV(contentsOfURL: csvURL,error: error)// Rowslet rows = csv.rowslet 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"]// Columnslet columns = csv.columnslet names = csv.columns["name"] //=> ["Alice","Bob","CharlIE"]let ages = csv.columns["age"] //=> ["18","19","20"]}.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 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"]// ]
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.
总结以上是内存溢出为你收集整理的数组 – 将.csv数据导入数组全部内容,希望文章能够帮你解决数组 – 将.csv数据导入数组所遇到的程序开发问题。
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