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Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”

...rvlet 4.0 compatible one (which matches Tomcat 9+, WildFly 11+, Payara 5+, etc). <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/java...
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What is RSS and VSZ in Linux memory management

...ich has been allocated for normal program startup like text area, globals, etc. on the second print, we have written to 8388608 KiB == 8GiB worth of pages. As a result, RSS increased by exactly 8GIB to 8390256 KiB == 8388608 KiB + 1648 KiB RSS continues to increase in 8GiB increments. The last print...
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Which is more preferable to use: lambda functions or nested functions ('def')?

..."very rare", it is common for key functions to sorted or itertools.groupby etc., e.g. sorted(['a1', 'b0'], key= lambda x: int(x[1])) – Chris_Rands Apr 9 '18 at 12:09 add a com...
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Transitioning from Windows Forms to WPF

...just to play devil's advocate: Starting with UI (which buttons, text boxes etc. appear in the window) helps focusing the application on what you want to do. The rest is just implementation details of how you want to do it. – Asaf Nov 13 '13 at 16:43 ...
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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?

... the frame bigger, so we'd need to update any width or height constraints, etc.. If you're only using the transform for a temporary animation, then what's above may suffice since I don't believe auto layout will prevent the in-flight animation from presenting images that represent purely transient ...
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base64 encoded images in email signatures

I have to include some images (company logo's etc) in email signatures. I've had all sorts of issues using the embedded images produced by the email system in question (they get sent as attachments generally) and as linked images (requiring permission to display them in the email received). ...
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How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar

...based iPhone app. I'm not sure how to proceed. The app already has an NSFetchedResultsController with a predicate to retrieve the data for the primary TableView. I want to make sure I'm on the right path before I change too much code. I'm confused because so many of the examples are array-based ...
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OAuth 2.0: Benefits and use cases — why?

...oint of the OAuth specs is for a content provider (e.g. Facebook, Twitter, etc.) to assure a server (e.g. a Web app that wishes to talk to the content provider on behalf of the client) that the client has some identity. What three-legged authentication offers is the ability to do that without the cl...
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How does the compilation/linking process work?

...nd I have deliberately not used the jargon of object files, symbol tables, etc. which to me is part of the confusion. share | improve this answer | follow | ...
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What does “Memory allocated at compile time” really mean?

...g equivalent to "reserve memory from 0xABC till 0xXYZ for variable array[] etc." and then the loader uses that to really allocate it just before it runs the program ? – Talha Sayed Jan 25 '14 at 12:41 ...