metadata

问题 Background: I'm interested in using MEF to provide a plug-in architecture in a WinForm application using C# with .NET 4.0, but I am not clear on a couple of things. First: I have not worked at all with building DLLs yet in C#, and I'm a little fuzzy on the concept of DLL Assemblies and how a DLL is normally loaded into memory ( meaning, all at once or in pieces as needed ) Intent: The program will be a machine hardware control framework, and will be made up of a primary WinForm GUI that is a

问题 Right now, I'm particularly interested in reading the data from MP3 files (ID3 tags?), but the more it can do (eg EXIF from images?) the better without compromising the ID3 tag reading abilities. I'm interested in making a script that goes through my media (right now, my music files) and makes sure the file name and directory path correspond to the file's metadata and then create a log of mismatched files so I can check to see which is accurate and make the proper changes. I'm thinking Ruby

问题 As per MSDN, SqlDataReader.GetSchemaTable returns column metadata for the query executed. I am wondering is there a similar method that will give table metadata for the given query? I mean what tables are involved and what aliases it has got. In my application, I get the query and I need to append the where clause programically. Using GetSchemaTable() , I can get the column metadata and the table it belongs to. But even though table has aliases, it still return the real table name. Is there a

问题 I'm new to ASP.NET-ville, be gentle. I have been troubleshooting a ASP.NET setup, where the server/database values are changing, therefore web.config needs to be updated. There are multiple <add name="NameXYZ" connectionString="blah" /> instances (multiple ASP.NET components), but some of these are marked up differently to others. I've got the following provided: <add name="CONNECTION-B" connectionString="metadata=res://*/ZZZZ.ssdl;provider=System.Data.SqlClient;provider connection string=

问题 How do i get a date or metadata from a UIImage in this case: //UIImagePickerControllerSourceType picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //delegate return - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ // po info in console -> there is no metadata of the image where i can find the date // Has anyone an idea how to get it? } 回答1: If you are referring to EXIF metadata in the image (which includes

问题 I' ve a .MOV video sent by a phone messanger app. Can I retrieve the real creation data of the file and the author? I tried with ffprobe, mediainfo and similar tool but give me only the date when I download it. 回答1: I wrote a quick Python script that can obtain the creation and modification timestamps, since those are easy to find. Finding the author is a bit harder because it can be stored in several different ways. Example usage: $ ./mov-timestamps.py file.mov creation date: 2013-03-29 16

问题 In WooCommerce, "Get a custom field array values within WooCommerce email order meta" answer code to one of my previous questions, has given me the way to pull fields out of an array from the order post meta data. But how would I take this code and adjust it, to add a heading above the new data and a table around the data, within the email? I would like to add a <h2>Attendee Info</h2> above the output of the fields. In addition I'd like to wrap the field output in a <table> . I would like to

问题 Background I am using a legacy database with all kinds of ugly corners. One bit is auditing. There is a table listing tablename/field combinations of fields that should have an audit trail. For example, if there is a row that has "WORKORDER" for the table name and "STATUS" for the fieldname, then I need to add row(s) to the auditing table whenever the Workorder.Status property changes in the application. I know the approach: NH events or interceptors, but I've got an issue to figure out

问题 my code is function getTitle($Url){ $str = file_get_contents($Url); if(strlen($str)>0){ preg_match("/\<title\>(.*)\<\/title\>/",$str,$title); return $title[1]; } else { return false; } } function getMetas($Url){ $str = file_get_contents($Url); if(strlen($str)>0){ // preg_match("/\<title\>(.*)\<\/title\>/",$str,$title); preg_match("/<meta name=\"description\" content=\"(.*?)\"/",$str,$title); // preg_match( '<meta name="description".*content="([^"]+)">siU', $str, $title); return $title[1]; }

问题 As a beginner to hadoop I am confused with these words namespace and metadata. Is there any relation between these two ? 回答1: According to 'Hadoop The definitive guide' - "The NameNode manages the filesystem namespace. It maintains the filesystem tree and the metadata for all the files and directories in the tree." Essentially, Namespace means a container. In this context it means the file name grouping or hierarchy structure. Metadata contains things like the owners of files, permission bits