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How to trim whitespace from a Bash variable?

I have a shell script with this code: 42 Answers 42 ...
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What is Dispatcher Servlet in Spring?

...ap buildHome() { return somestuff; } The Dispatcher servlet is the bit that "knows" to call that method when a browser requests the page, and to combine its results with the matching JSP file to make an html document. How it accomplishes this varies widely with configuration and Spring versi...
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How to split a dos path into its components in Python

... I've been bitten loads of times by people writing their own path fiddling functions and getting it wrong. Spaces, slashes, backslashes, colons -- the possibilities for confusion are not endless, but mistakes are easily made anyway. So I...
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Why do I need to override the equals and hashCode methods in Java?

...), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable. Let's try to understand it with an example of what would happen if we override equals() without overriding hashCode() and attempt to use a Map. Say w...
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Operator Overloading with C# Extension Methods

...e feature is being discussed for some future release of C#. Mads talked a bit more about implementing it in this video from 2017. On why it isn't currently implemented, Mads Torgersen, C# Language PM says: ...for the Orcas release we decided to take the cautious approach and add only regular extens...
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How to generate and validate a software license key?

...t'll be available for downloading and installing for free but in a very limited version. To get access to all the features the user has to pay a license fee and receive a key. That key will then be entered into the application to "unlock" the full version. ...
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How do I get an animated gif to work in WPF?

...(above by Dario) to work properly. The result was weird, choppy animation with weird artifacts. Best solution I have found so far: https://github.com/XamlAnimatedGif/WpfAnimatedGif You can install it with NuGet PM> Install-Package WpfAnimatedGif and to use it, at a new namespace to the Window ...
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Difference between natural join and inner join

...follow | edited Sep 1 '19 at 9:11 answered Jan 1 '12 at 23:51 ...
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How to perform runtime type checking in Dart?

...ss Foo { } main() { var foo = new Foo(); if (foo is Foo) { print("it's a foo!"); } } share | improve this answer | follow | ...
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How can I override the OnBeforeUnload dialog and replace it with my own?

... the default dialogue for onbeforeunload, so your best bet may be to work with it. window.onbeforeunload = function() { return 'You have unsaved changes!'; } Here's a reference to this from Microsoft: When a string is assigned to the returnValue property of window.event, a dialog box appe...