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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...d Dec 22 '16 at 11:43
Bhavin Ramani
3,08555 gold badges2929 silver badges4040 bronze badges
answered Jul 27 '14 at 13:58
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Check that an email address is valid on iOS [duplicate]
I am developing an iPhone application where I need the user to give his email address at login.
4 Answers
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TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
Calling TextView.setTextSize() is working abnormally. Right after the call to setTextSize if we get a getTextSize its returning a much higher value that what we set it to earlier.
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How to get rid of the 'undeclared selector' warning
I want to use a selector on an NSObject instance without the need for an implemented protocol. For example, there's a category method that should set an error property if the NSObject instance it's called on supports it. This is the code, and the code works as intended:
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How do you see the entire command history in interactive Python?
I'm working on the default python interpreter on Mac OS X, and I Cmd + K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history option in bash shell, which shows you all the commands you've entered so far?
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Only initializers, entity members, and entity navigation properties are supported
...v 16 '16 at 15:21
Basheer AL-MOMANIBasheer AL-MOMANI
10.8k88 gold badges7575 silver badges7676 bronze badges
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'pip' is not recognized as an internal or external command
I'm running into a weird error when trying to install Django on my computer.
32 Answers
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Display a tooltip over a button using Windows Forms
How can I display a tooltip over a button using Windows Forms ?
9 Answers
9
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How do I convert a double into a string in C++?
I need to store a double as a string. I know I can use printf if I wanted to display it, but I just want to store it in a string variable so that I can store it in a map later (as the value , not the key ).
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What is a Python equivalent of PHP's var_dump()? [duplicate]
When debugging in PHP, I frequently find it useful to simply stick a var_dump() in my code to show me what a variable is, what its value is, and the same for anything that it contains.
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