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Java Keytool error after importing certificate , “keytool error: java.io.FileNotFoundException & Acc
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This could happen if you are not running the command prompt in administrator mode.
If you are using windows 7, you can go to run, type cmd and hit Ctrl+Shift+enter. This will open the command prompt in administrator mode. If not, you can also go to start -> all programs -> accessories -> ...
How to hide the “back” button in UINavigationController?
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[self.navigationItem setHidesBackButton:YES animated:YES];
And to restore it:
[self.navigationItem setHidesBackButton:NO animated:YES];
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[UPDATE]
Swift 3.0:
self.navigationItem.setHidesBackButton(true, animated:true)
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resize ipython notebook output window
...ebook ouput is limited to a small sub window at the bottom. This makes us force to use separate scroll bar that comes with the output window, when the output is big.
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How to understand nil vs. empty vs. blank in Ruby
I find myself repeatedly looking for a clear definition of the differences of nil? , blank? , and empty? in Ruby on Rails. Here's the closest I've come:
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How do the post increment (i++) and pre increment (++i) operators work in Java?
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Is this answer is the same for c# and c++?
– workoverflow
May 27 '18 at 7:39
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Map over object preserving keys
The map function in underscore.js, if called with a javascript object, returns an array of values mapped from the object's values.
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lodash multi-column sortBy descending
There's a nifty method to sort an array of objects based on several properties:
7 Answers
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Remove a marker from a GoogleMap
In the new Google Maps API for Android, we can add a marker , but there is no way to (easily) remove one.
11 Answers
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How to install PostgreSQL's pg gem on Ubuntu?
I'm trying to install PostgreSQL's pg gem for Ruby.
19 Answers
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Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PR
I have a .key file which is PEM formatted private key file. I didn't make this file but I got this from somewhere.
13 Answe...