我有一个文件testfile和一个字符串teststring.
在我写的shell中:
echo "a" > testfile
那么xxd testfile
我可以看到我的filecontent
输出的十六进制值:
0000000: 610a a.
看我的代码:
int file;
struct stat s;
unsigned long size;
char* buffer;
char md5[MD5_DIGEST_LENGTH]
file = open("testfile", O_RDONLY);
if (file < 0)
return false;
if (fstat(file, &s) < 0)
{
close(file);
return false;
}
size = s.st_size; //GET FILE SIZE
printf("filesize: %lu\n", size); //PRINT FILESIZE FOR DEBUGGING
buffer = (char*)mmap(0, size, PROT_READ, MAP_SHARED, file, 0); //MAP FILE CONTENT TO BUFFER
MD5((unsigned char*)buffer, size, …我使用Lucene.NET3.0.3如何获得TermAttribute.I尽我所能,但我无法得到它
这里来源:
Analyzer analyzer = new Lucene.Net.Analysis.Snowball.SnowballAnalyzer(Lucene.Net.Util.Version.LUCENE_30, "English",stopword);
TokenStream tokenStream = analyzer.TokenStream("English", new StringReader("How to get TermAttribute"));
while (tokenStream.IncrementToken())
{
???How to get TermAttribute
}
我在字典中有一些记录,我需要根据创建日期(CDate)和修改日期(MDate)对数据进行排序.在创建记录时,我的CDate将具有当前日期时间,但MDate将是1/1/0001 12:00:00 AM.
这是用于排序的示例数据和代码.
CDate MDate 4/30/2013
4:43:41 PM 4/30/2013 4:46:47 PM 4/30/2013 4:43:28 PM
4/30/2013 4:46:36 PM 4/30
/ 2013年4月4日下午4:43:54
4:46:16 PM 4/30/2013 5:03:13 PM 1/1/0001 12:00:00 AM
码:
FileSchedulerEntities = FileSchedulerEntities
.OrderByDescending(pair => pair.Value.MDate)
.ThenByDescending(pair => pair.Value.CDate)
.ToDictionary(pair => pair.Key, pair => pair.Value);
根据排序,我需要按照这样的降序对数据进行排序.
CDate MDate 4/30/2013
5:03:13 PM 1/1/0001 12:00:00 AM 4/30/2013 4:43:41 PM 4/30/2013
4:46:47 PM 4/30
/ 2013 4/43:28 PM
4/30/2013 4:46:36 PM 4/30/2013 4:43:54 PM 4/30/2013 4:46:16 PM
但上述代码无效.有任何想法吗？
我在Visual Studio 2010中创建了一个控制台项目,并选择了.Net Framework 2.0
namespace ConsoleApp1
{
class Program
{
public int Add(int a, int b = 0, int c = 0)
{
Console.WriteLine("a is " + a);
Console.WriteLine("b is " + b);
Console.WriteLine("c is " + c);
return a + b + c;
}
public static void Main()
{
Program o = new Program();
Console.WriteLine(o.Add(10));
Console.WriteLine(o.Add(10, 10));
Console.WriteLine(o.Add(10, 10, 10));
Console.WriteLine(o.Add(b: 20, a: 10));
Console.ReadLine();
}
}
}
它运作成功.
但是,如果我在Visual Studio 2008中输入相同的代码,则会失败!
任何人都可以帮我解决这个问题,因为C#4附带了Named和Optional Parameters吗？
我目前正致力于移动Android应用程序.此应用程序在加载时遇到问题的主要原因是Web服务json字符串,在当前阶段加载时间太长,有时会导致应用程序强制关闭(停止时间过长).
Splash - > MainActivity - > HomeActivity这是我们的应用程序启动的方式.
首先我们显示一个Splash,然后我们运行MainActivity,它包含以下代码:
public class HomeActivity : Activity
{
NewsObject[] news;
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
SetContentView (Resource.Layout.Main);
var request = HttpWebRequest.Create(string.Format(@"http://rapstation.com/webservice.php"));
request.ContentType = "application/json";
request.Method = "GET";
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
Console.Out.WriteLine("Error fetching data. Server returned status code: {0}", response.StatusCode);
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
var content = reader.ReadToEnd();
if(string.IsNullOrWhiteSpace(content)) {
Console.Out.WriteLine("Response contained empty body...");
Toast toast = Toast.MakeText …在我的情况下,我需要搜索像C#,.Net,C++ ..等标签分析器删除特殊字符的关键字,所以我使用空白分析器,它不适合我.索引时:
public void Indexing(DataSet ds)
{
string indexFileLocation = @"D:\Lucene.Net\Data";
Lucene.Net.Store.Directory dir = Lucene.Net.Store.FSDirectory.GetDirectory(indexFileLocation, true);
IndexWriter indexWriter = new IndexWriter(dir, new WhitespaceAnalyzer(), Lucene.Net.Index.IndexWriter.MaxFieldLength.UNLIMITED);
if (ds.Tables[0] != null)
{
DataTable dt = ds.Tables[0];
if (dt.Rows.Count > 0)
{
foreach (DataRow dr in dt.Rows)
{
//Create the Document object
Document doc = new Document();
foreach (DataColumn dc in dt.Columns)
{
string check = dc.ToString();
if (check.Equals("Skill_Summary"))
{
doc.Add(new Field(dc.ColumnName, dr[dc.ColumnName].ToString(), Field.Store.YES, Field.Index.ANALYZED));
}
if (check.Equals("Title"))
{
doc.Add(new Field(dc.ColumnName, dr[dc.ColumnName].ToString(), Field.Store.YES, Field.Index.ANALYZED)); …我正在使用带有c#目标的Antlr 4.这是我的语法的一个子集:
/*
* Parser Rules
*/
text : term+ EOF;
term : a1 a2 a3;
a1: ....
...
...
我想接受有效数据块作为(term)s,当出现错误时我想搜索下一个有效术语并打印出导致错误的整个文本,供用户手动分析.
如何将输入同步到下一个有效期限？以及如何获取被忽略的文本？