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On delete cascade with doctrine2
...ses cascade={"remove"} in the association - this is a calculation that is done in the UnitOfWork and does not affect the database structure. When you remove an object, the UnitOfWork will iterate over all objects in the association and remove them.
2) Database level - uses onDelete="CASCADE" on th...
Laravel Check If Related Model Exists
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In php 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relati...
What is the runtime performance cost of a Docker container?
...d). The major overhead from KVM is in the userspace hardware emulation components (which only apply to non-CPU hardware); there's significant overhead around memory paging... but raw floating-point? I'd want to look at what was actually going on there -- perhaps excessive context switches.
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Scanner vs. StringTokenizer vs. String.Split
...uld I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shopping for spliting?
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Is using Random and OrderBy a good shuffle algorithm?
...lgorithms over at Coding Horror . I have seen that somewhere people have done this to shuffle a list:
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How do you parse and process HTML/XML in PHP?
How can one parse HTML/XML and extract information from it?
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Using context in a fragment
...) method to get the context of your attached activity, but always remember one thing: Fragments are slightly unstable and getActivity returns null some times, so for that, always check the isAdded() method of fragment before getting context by getActivity().
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How can I check whether a option already exist in select by JQuery
...an be good for beginners. Certainly not the best answer, but it is a valid one.
– roberthuttinger
Apr 9 '13 at 14:42
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Unit testing code with a file system dependency
I am writing a component that, given a ZIP file, needs to:
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How to change Status Bar text color in iOS
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No need to code. It can all be done from the plist: (1) set "View controller-based status bar appearance" to NO and (2) set "Status bar style" to "Opaque black style". (Raw values are UIViewControllerBasedStatusBarAppearance -> NO and UIStatusBarStyle -&...