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What is :: (double colon) in Python when subscripting sequences?

I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3] ? ...
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What is the iPad user agent?

... This answer is incorrect. From iOS 13 there is now no mention of iPad at all. – CpnCrunch Dec 16 '19 at 18:51 ...
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Check OS version in Swift?

... Update: Now you should use new availability checking introduced with Swift 2: e.g. To check for iOS 9.0 or later at compile time use this: if #available(iOS 9.0, *) { // use UIStackView } else { // show sad face emoji } or...
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Can I mix MySQL APIs in PHP?

...with these different APIs? Am I the ignorant one here? This being for the "now deleted" question stackoverflow.com/q/34209127 only viewable by 10K+ members should anyone wonder. This in relation to $stmt3->execute(array('classID' => $_POST['class'],'studentID' => mysql_real_escape_string($s...
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What's the difference between a Python “property” and “attribute”?

...perties involve additional processing to access the target value...do you know how significant / much slower it is? – martineau Jun 25 '18 at 16:14 ...
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Synchronous request in Node.js

... does your system use and what version of node are you using? I'd love to know to determine if I need to switch or not. – jemiloii Oct 8 '15 at 17:23 ...
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The relationship could not be changed because one or more of the foreign-key properties is non-nulla

...lso stripped away all repository abstractions to keep it simple. I don't know if that is a good solution, but I believe that some kind of hard work along these lines must be done to take care of all kinds of changes in the navigation collection. I would also be happy to see an easier way of doing i...
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How to convert ActiveRecord results into an array of hashes

...rds = TaskStoreStatus.all tasks_records = tasks_records.as_json # You can now add new records and return the result as json by calling `to_json` tasks_records << TaskStoreStatus.last.as_json tasks_records << { :task_id => 10, :store_name => "Koramanagala", :store_region => "In...
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What does “mro()” do?

...ase, and so on up to object (only works for new-style classes of course). Now, with multiple inheritance...: >>> class D(B, C): pass ... >>> D.__mro__ (<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.A'>, <type 'objec...
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java.util.regex - importance of Pattern.compile()?

... It always seems like you know so much about Java. They should hire you to work for them... – jjnguy Nov 12 '09 at 6:24 add a ...