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Closed 10 years ago.
I mean that looks like an overkill. It already has cellForRowForIndexPath
Once UITableViewSourceDelegate got the cell, it can easily got the height by computing the height of that cell.
So why?
heightForRowAtIndexPath is called for every row in the table in order to compute its total height and consequently set the correct size of the scroll indicator.
On the other hand cellForRowForIndexPath is called only for the visible cells.
Related
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Closed 10 years ago.
I haven't got a clue where to start and how far I can go.
I would like to add labels for individual values in the the date picker.
But I'm not sure if this is possible and how to do it ?
I haven't got a clue where to start
Always start with the documentation.
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Closed 10 years ago.
The reason for the name 'callback' eludes me. What does that term mean?
Because it provides a mechanism for a library to call back into your code.
Callbacks are called that because when you give something a callback, you enable it to "call back" into your code at a later time.
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Closed 9 years ago.
Is it possible to find out sunrise time for a given Longitude and Latitude value in Objective-C?
Try the Sunrise/Sunset Algorithm here:
http://edwilliams.org/sunrise_sunset_algorithm.htm
Some source codes: Tools and Sources of Sunrise/Sunset Computation, including C and C++ which you can integrate with Objective-C
And here is a implementation in Objective-C!
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Closed 11 years ago.
If I code an objective-c program can I rely on the system to garbage collect efficiently?
To Bavarious's point, it depends on what your expectation of efficiency is. Putting that aside, note that garbage collection is only available on OS X, not iOS.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 11 years ago.
how do you test your own k-means implementation for multidimensional data sets?
I was thinking of running an already existing implementation (i.e. Matlab) on the data and compare the results with my algorithm. But this would require both algorithms to work more than roughly the same and the mapping between the two results probably is no piece of cake.
Do you have a better idea?
See answers of the same question over at Cross Validated: How do you test an implementation of k-means?.