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Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy

...iewDidLoad method. The solution for me was to move this call to the viewDidAppear: method. My presumption is that the view controller's view is not in the window's view hierarchy at the point that it has been loaded (when the viewDidLoad message is sent), but it is in the window hierarchy after it ...
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How can I know if a process is running?

...ormally agree with you but this is an extension method. I think it is more appropriate to throw a null pointer exception given the syntax, it just feels more consistent with calling methods of null objects. – Aelphaeis Apr 28 '16 at 15:30 ...
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Could not insert new outlet connection [duplicate]

... Removing(removing reference, not deleting) and then adding the appropriate file(the file of class you want to add the outlet to) is actually enough. Edit 1 I found that after unchecking (in XCode 6.3.1) I had to wait a few seconds for the Indexing to appear and complete in the project n...
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How do I use a Boolean in Python?

...ects. they will retain same memory address throughout the lifetime of your app. When you type True, python memory manager will check its address and will pull the value '1'. for False its value is '0'. Comparisons of any boolean expression to True or False can be performed using either is (identity)...
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How to fix Error: laravel.log could not be opened?

...at I did, I modified my Vagrantfile like this: config.vm.synced_folder "./app","/var/www/", create:true, :owner => "vagrant", :group => "www-data", :mount_options => ["dmode=775","fmode=664"] share | ...
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Do Google refresh tokens expire?

...(or I should say become unauthorized) when the user revokes access to your application. Refer this doc it clearly states the function of refresh tokens. Instead of issuing a long lasting token (typically good for a year or unlimited lifetime), the server can issues a short-lived acce...
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.gitignore all the .DS_Store files in every folder and subfolder

...pository, it will continue to be tracked even if it matches an entry in an applicable .gitignore file. You have to manually remove the .DS_Store files that were added to your repository. You can use git rm --cached .DS_Store Once removed, git should ignore it. You should only need the followi...
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org.hibernate.MappingException: Could not determine type for: java.util.List, at table: College, for

... field instead of getter property @OneToMany(targetEntity=Student.class, mappedBy="college", fetch=FetchType.EAGER) private List<Student> students; share | improve this answer | ...
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Android SDK manager won't open

... @teuneboon thanks for this solution. And I've found out that this happens only when you have placed your android SDK in any folder/path that contains spaces. – PC. Jan 10 '13 at 11:34 ...
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Break when a value changes using the Visual Studio debugger

...eading somewhere this is a tough feature to implement in debugging managed apps especially with garbage collector involved. – Gulzar Nazim Oct 1 '08 at 23:25 27 ...