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Sort objects in ArrayList by date?
...ample I find is about doing this alphabetically, while I need my elements sorted by date.
13 Answers
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Detect the Internet connection is offline?
...o put the entire application in an "offline" state may lead to a lot of error-prone work of handling state.. wireless connections may come and go, etc. So your best bet may be to just fail gracefully, preserve the data, and alert the user.. allowing them to eventually fix the connection problem if ...
Any reason to prefer getClass() over instanceof when generating .equals()?
...is an option labeled "Use 'instanceof' to compare types". The default is for this option to be unchecked and use .getClass() to compare types. Is there any reason I should prefer .getClass() over instanceof ?
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Is it possible only to declare a variable without assigning any value in Python?
...riable. But be careful -- this doesn't mean that you won't end up with incorrectly initialized variables. If you init something to None, make sure that's what you really want, and assign something more meaningful if you can.
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When to use thread pool in C#? [closed]
...d pool vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some considerations you use when making this programming decision?
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NSNotificationCenter addObserver in Swift
...d an observer in Swift to the default notification center? I'm trying to port this line of code that sends a notification when the battery level changes.
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When to use RDLC over RDL reports?
...ng SSRS 2005 / 2008 in the past weeks and have created some server side reports. For some application, a colleague suggested that I look into RDLC for that particular situation. I am now trying to get my head around the main difference between RDL and RDLC.
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“No such file or directory” error when executing a binary
...4. The app shipped with an old version of gzip (1.2.4), that was compiled for a much older kernel:
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How to go to each directory and execute a command?
How do I write a bash script that goes through each directory inside a parent_directory and executes a command in each directory .
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What is an NP-complete in computer science?
What is an NP-complete problem? Why is it such an important topic in computer science?
15 Answers
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