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Cleanest way to get last item from Python iterator
...ven be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default.
– S.Lott
Jan 26 '10 at 11:44
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How to sum array of numbers in Ruby?
... edited Jul 26 '19 at 16:51
Fernando Briano
7,5091313 gold badges5353 silver badges7474 bronze badges
answered Oct 8 '09 at 16:07
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How to check whether a pandas DataFrame is empty?
How to check whether a pandas DataFrame is empty? In my case I want to print some message in terminal if the DataFrame is empty.
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How to set up a PostgreSQL database in Django
I'm new to Python and Django.
11 Answers
11
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Git keeps asking me for my ssh key passphrase
...ed keys as instructed in the github tutorial, registered them with github, and tried using ssh-agent explicitly — yet git continues to ask me for my passphrase every time I try to do a pull or a push.
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Reading a resource file from within jar
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Thank you, this was very helpful and the code works perfectly, but I do have one problem, I need to determine whether the InputStream exists (like File.exists()) so my game can tell whether to use the default file or not. Thanks.
– Prin...
Sorted collection in Java
...n/should be used for maintaining a sorted list in Java. I have tried Map and Set , but they weren't what I was looking for.
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How to load a xib file in a UIView
I have been searching everywhere and nothing so far has worked for me.
7 Answers
7
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How do I get the RootViewController from a pushed controller?
...[viewControllers objectAtIndex:viewControllers.count - 2];
This is the standard way of getting the "back" view controller. The reason objectAtIndex:0 works is because the view controller you're trying to access is also the root one, if you were deeper in the navigation, the back view would not be ...
Find a value in an array of objects in Javascript [duplicate]
...have an array of unnamed objects, which contain an array of named objects, and I need to get the object where "name" is "string 1". Here is an example array.
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