metadata

问题 some Java code I'm using invokes toString() on my Clojure function objects, which return something like #<ns$something something.something$something@7ce1eae7>> - I want to return something else...presumably there's a way to include some metadata in the functions so their objects' toString() returns that instead ? 回答1: If you just want to make the REPL print-out of your objects more meaningful, you can implement a defmethod print-method for the class in question. Here's a shortened version of

问题 I'd like to return the package license as declared in the DESCRIPTION file of an R package (ideally I'd rather have the URL that CRAN automatically adds to all the common licenses it recognizes). I realize I can get the license R itself is distributed under with license() which amazingly doesn't apply to packages; e.g. license("packagename") Nor is this data returned by a call to citation("packagename") . 回答1: you are looking for packageDescription eg: packageDescription("stats", fields=

问题 Problem: I want to do this operation select name from pragma table_info(my_awesome_table) However, it yields a syntax error. I have the sneaking suspicion this is possible, but it doesn't seem to be documented as usable in the SELECT docs with sqlite. 回答1: Since SQLite 3.16.0 we can use PRAGMA functions sqlite> create table my_table (a int, b TEXT); sqlite> .headers ON sqlite> .mode columns sqlite> pragma table_info(my_table); cid name type notnull dflt_value pk ---------- ---------- --------

问题 I am trying to make a mp3 player in JavaFX and so far have gotten it to load songs and play, but now I want to display the metadata from the Media object to a tableview. I have a song class which acts as a model class and in my controller class I have a Label I am testing to see if I can get the metadata to display, but it always comes as null. package application; import java.io.File; import javafx.collections.MapChangeListener; import javafx.scene.media.Media; import javafx.scene.media

问题 How do I successfully remove an images property items? I have tried loading the image and then looping thru using the image.ProperyIdList and then calling .RemovePropertyItem and then saving the image to a new file, but the new file still has all the metadata. I have also tried to zero out all the bytes for each propertyItem.value but that causes a genric gdi+ error when I save. I have also tried pushing the image into a memeory stream and back, thinking it would clear the metadata. Any ideas

问题 I have a mp3 with my artist tag in russian. All english meta data prints normally but the russian shows up as question marks. How can I force the module to use unicode or utf8 encoding? python from ID3 import * import glob import re import os for name in glob.glob('*.mp3'): id3info = ID3(name) print id3info I am using this library: http://id3-py.sourceforge.net/ 回答1: You can't do Unicode in ID3v1, and that module only does ID3v1 (and it doesn't even do it correctly). If you're explicitly

问题 I have created a custom column for WordPress users called "Verification". Upon WooCommerce registration, an email is sent to the user asking them to verify their email and that way, account. This information is stored in the database under usermeta (wp_usermeta) as a meta_key and that key is called is_activated . Here is the code for the custom column: add_action('manage_users_columns','account_verification_status_column'); function account_verification_status_column($column_headers) { unset(

问题 I'm creating an application in Objective-C and I need to get the metadata from a SHOUTcast stream. I tried this: NSURL *URL = [NSURL URLWithString:@"http://202.4.100.2:8000/"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL]; [request addValue:@"1" forHTTPHeaderField:@"icy-metadata"]; [request addValue:@"Winamp 5/3" forHTTPHeaderField:@"User-Agent"]; [request addValue:@"audio/mpeg" forHTTPHeaderField:@"Content-Type"]; [NSURLConnection connectionWithRequest:request

问题 I have some javascript that I'm compiling with Microsoft's jsc.exe compiler into a .NET assembly. I would like to set some assembly metadata, such as the file version, but it is unclear to me how to do that. How can I set these assembly-level attributes in JScript.NET? 回答1: import System.Reflection; [assembly: AssemblyCompanyAttribute("Your Company")] [assembly: AssemblyCopyrightAttribute("Copyright Your Company 2014")] [assembly: AssemblyDescriptionAttribute("Description")] [assembly:

问题 I have created a procedure : create or replace procedure gg as begin insert into book values ('prashant','prashant','prashant'); commit; end; / Procedure has been created successfully.Now i want to check the package name for the corresponding procedure but i am not able to do so. I am using the below query : > SELECT * FROM SYS.DBA_PROCEDURES WHERE procedure_name ='gg'; Its giving 0 rows selected.Please help. 回答1: NOTE Please look at the UPDATE section for correct answer. The procedure name