Note though, that the return type can't be U without it being a template argument, if no U then the return type needs to typed out the long way then. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta.
New post summary designs on greatest hits now, everywhere else eventually. Related 7. Hot Network Questions. Question feed. Accept all cookies Customize settings. Returns the next item in the data set or undef if the iterator is on the last item. This is an alias to 'count' to provide backward compatibility.
View count. Returns the text string even or odd to indicate the parity of the current iteration count starting at 1. This is typically used to create striped zebra tables. You can then style the tr. In other words, this will return a true value for the first iterator, the third, fifth, and so on.
In other words, this will return a true value for the second iteration, the fourth, sixth, and so on. It's very nice. I have a problem about how to use iterator under the template manner. Here is an example I am trying to do, the problem is that, inside the for loop how can I initial the iterator pp?
I have read a similar question, but I cannot fully understand that since I am a beginner. Can anyone help and also provide some simple explanation? Before a qualified dependent type, you need typename.
For a more comprehensive explanation, check out Why is the keyword "typename" needed before qualified dependent names, and not before qualified independent names? Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years ago.
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