c++ - How to help the compiler deduce template parameter? -

-

मेरे पास यह विधि है: 

  टेम्पलेट & lt; typename type & gt; स्थिर QList & lt; प्रकार & gt; ComboListToItemsList (QList & lt; QList & lt; QVariant & gt; & gt; और amp; comboList) {QList & lt; प्रकार & gt; itemsList; यदि (कॉम्बोलिस्ट.लैम्थ ()> gt; 0) {foreach (QList & lt; QVariant & gt; dbItem, कॉम्बोलिस्ट) {प्रकार आइटम (dbItem); itemsList.append (आइटम); }} वापसी आइटम सूची; }

और जब मैं इसे कॉल करता हूं: 

  QList & lt; SettingItem & gt; SettingItems = (QList & lt; SettingItem & gt;) DatabaseManager :: comboListToItemsList (परिणाम.पहले);

यह चला जाता है "टेम्प्लेट पैरामीटर टाइप नहीं निकाल सकता"। 

  (QList & lt; SettingItem & gt;)

को जोड़कर कैसे मैंने पहले से ही किया है? मेरे पास उप-वर्गों के नाम हैं जिनके लिए विधि बनाई गई है लेकिन वास्तव में इसका पता नहीं है कि इसका उपयोग कैसे करना है ...

इसे केवल एक टेम्पलेट तर्क के रूप में निर्दिष्ट करें, जैसा कि @ क्रिस ने कहा है। 

  QList & lt; SettingItem & gt; SettingItems = डेटाबेस प्रबंधक :: comboListToItemsList & lt; SettingItem & gt; (परिणाम। पहले);

Comments

Post a Comment

Popular posts from this blog

Folder list php -

-
I want to list folder names in the list. There is a file to show the folder name. There is already a problem, please do a test. Another code would be OK. & lt ;? Php function getFileList ($ folder name, $ fileType = "") {if (substr ($ folderName, strlen ($ folderName) - 1)! = "/") {$ Folder name. = '/'; } Foreach (Globe ($ folderName. '*'. $ FileType) $ filename) {if_dir ($ filename)) {$ type = 'folder'; } And {$ type = 'file'; } Echo str_replace ($ folderName, '', $ filename. ' '); }} // call function getFileList ('folder name'); // List of all files? & Gt; & Lt; Select class = "form" name = "userlevel" size = "1" & gt; & Lt; Option value = "& lt ;? php getFileList ('theme') ;? & gt;" & Gt; فولدر 1 & lt; / Options & gt; & Lt; Option value = "& lt ;? php getFileList ('theme') ;? & gt;" ...
Read more

objective c - How to open front/back camera at the same time in iOS developing? -

-
I want to use the front and rear camera at the same time in iOS development: when I take a photo back After the camera, the front camera can be opened and another can take a photo. By the way, these two photos are in a picture: vertical arrangement. Has anyone done this before? UIImagePickerController to take the picture, and to determine which camera is used Is in. / P> To merge the pictures, I found an example through search (its recommendation in the future)
Read more

GO: Serve static pages -

-
I'm trying to display a static page with Go. Go: Package main import "net / http" function main () {fs: = http.FileServer (http.Dir ("static / house")) Http: .handle ("/", fs) http.ListenAndServe (": 4747", zero)} directory: project / stable home Html edit.html project.go When I run it, the web page displays links to edit.html and home.html instead of displaying a static page from home.html is. What am I doing wrong. Is this the best way to serve files? I know that there are other ways like From the HTML / templates package, but I'm not sure what is the difference between each of these methods and when. Thanks! fancy main () {http.Handle ("/", http.FileServer (Http) .ir ("static")) http.ListenAndServe (": 4747", zero)} You do not need static / home , just Static . and when you do not have index.html in / static , the directory instead Content appears. Just change the name of...
Read more