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Error type 3 Error: Activity class {} does not exist
... helps you or anyone else!
Edit 1:
If the above steps don't work for you, then deleting Gradle cache seems to be a solution, as pointed out by @Yasitha.
Edit 2
As suggested by a couple of users in the comments below, sometimes the issue can be resolved by completely removing and reinstalling the...
Why do python lists have pop() but not push()
..." intuitively means "add at the end of the list". If it was called "push", then it would be unclear whether we're adding stuff at the tail or at head of the list.
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Use LINQ to get items in one List, that are not in another List
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If you override the equality of People then you can also use:
peopleList2.Except(peopleList1)
Except should be significantly faster than the Where(...Any) variant since it can put the second list into a hashtable. Where(...Any) has a runtime of O(peopleList1.Co...
How can I override Bootstrap CSS styles?
...ould be prio 11 and if the css definition would be after the bootstrap.css then we would be good to go. However this would be pretty close and setting it as an id which boosts the prio big time, we don't have to worry about calculating prio and testing as hard whether we have it always right. easier...
Recursion or Iteration?
...in the code in a few months or years. If you run into performance issues, then profile your code, and then and only then look into optimizing by moving over to an iterative implementation. You may want to look into memoization and dynamic programming.
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How do I set the version information for an existing .exe, .dll?
...in Visual Studio, go to Edit > Add Resource > Version and click New. Then in the new Version tab, change FILEVERSION and PRODUCTVERSION, CompanyName, etc. Save the files and you're all set!
– twasbrillig
Nov 18 '14 at 22:09
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How can I force division to be floating point? Division keeps rounding down to 0?
...oat by doing c = a / float(b). If the numerator or denominator is a float, then the result will be also.
A caveat: as commenters have pointed out, this won't work if b might be something other than an integer or floating-point number (or a string representing one). If you might be dealing with ot...
Update R using RStudio
...d reopen RStudio (or restart RStudio, whichever wording you prefer). The "Then you change the path in your Rstudio option :Tools -> options -> General" did not work for me. However, restarting R did, so it would be good to update your answer to include this info.
– wars...
How to get distinct values for non-key column fields in Laravel?
...ssages" (used for a chat), and I want to get the latest message that the authenticated user has received from each conversation. Using groupBy I can get just one message, but I get the first, and I need the last message. Seems that orderBy doesn't work.
– JCarlosR
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Static Indexers?
...name + "Dict". Give it a readonly static as instance of said subclass, and then add your desired indexer.
Last, add the class as static import (hence the subclass to only expose the static field).
import static Element.ElementDict;
public class Element {
// ....
private static readonly ...