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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...e];
return cell;
}
The above code addresses a few problems stemming from the fact that the cell is reused:
You're not initializing the cell image before initiating the background request (meaning that the last image for the dequeued cell will still be visible while the new image is download...
Comparing two dataframes and getting the differences
...asy way to add a flag to this to see which rows were removed/added/changed from df1 to df2?
– pyCthon
Nov 23 '15 at 20:07
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Getting the folder name from a path
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Solution from Davide Icardi worked better for me because I had relative paths. Thanks.
– akatran
Oct 16 '14 at 6:19
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Favorite Django Tips & Features?
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I'm just going to start with a tip from myself :)
Use os.path.dirname() in settings.py to avoid hardcoded dirnames.
Don't hardcode path's in your settings.py if you want to run your project in different locations. Use the following code in settings.py if you...
How to find list of possible words from a letter matrix [Boggle Solver]
...'ll post it because it looks a bit faster than the other Python solutions, from setting up the dictionary faster. (I checked this against John Fouhy's solution.) After setup, the time to solve is down in the noise.
grid = "fxie amlo ewbx astu".split()
nrows, ncols = len(grid), len(grid[0])
# A dic...
Should programmers use SSIS, and if so, why? [closed]
... developer for 10.
The value of SSIS is as a workflow engine to move data from one spot to another with maybe some limited transformation and conditional branching along the way. If your packages contain a lot of script then your team is using SSIS for the wrong tasks or isn't comfortable with SQL ...
Calculating width from percent to pixel then minus by pixel in LESS CSS
I will calculate width in some element from percent to pixel so I will minus -10px via using LESS and calc() . It´s possible?
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Should IBOutlets be strong or weak under ARC?
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The current recommended best practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2...
How do malloc() and free() work?
...ew chunk of memory is needed. It is scanned before it calls for new memory from the OS. When a chunk is found that is bigger than the needed memory, it is divided into two parts. One is returned to caller, the other is put back into the free list.
There are many different optimizations to this stan...
Why do loggers recommend using a logger per class?
...resort to more reflection tricks to know where the log messages are coming from.
Compare the following:
Log per class
using System.Reflection;
private static readonly ILog _logger =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public void SomeMethod()
{
_logge...