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The term “Context” in programming? [closed]
I have been programming for some months now and a frequently used word is "context" in classes. Like ServletContext (Java), Activity (Android), Service (Java, Android), NSManagedContext (Objective-C, iOS).
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HashMap to return default value for non-found keys?
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[Update]
As noted by other answers and commenters, as of Java 8 you can simply call Map#getOrDefault(...).
[Original]
There's no Map implementation that does this exactly but it would be trivial to implement your own by extending HashMap:
public class Defau...
Cannot ignore .idea/workspace.xml - keeps popping up
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I was facing the same issue, and it drove me up the wall. The issue ended up to be that the .idea folder was ALREADY commited into the repo previously, and so they were being tracked by git regardless of whether you ignored them or not. I would recommend...
What is the difference between NTFS Junction Points and Symbolic Links?
...t a high level, the only obvious difference between NTFS Junction Points and Symbolic Links is that Junctions are only able to be directories, while SymLinks are allowed to also target files.
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ADO.NET DataRow - check for column existence
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
Rspec, Rails: how to test private methods of controllers?
... violates best practices in testing. Private methods should not be tested, and just because Ruby gives you the ability to circumvent method visibility, it doesn't mean that you should abuse it.
– Srdjan Pejic
Mar 17 '11 at 21:15
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In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...sends request headers with optional data, gets a response from the server, and closes the connection.
Supported in all major browsers.
Long poll - request → wait → response. Creates a connection to the server like AJAX does, but maintains a keep-alive connection open for some time (not long tho...
How to loop through all but the last item of a list?
... have asked another question in the first, does not mean that his question and this answer are not very useful to others. +1
– Prof. Falken
Sep 19 '12 at 7:38
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django template display item value or empty string
...n just code. This helps the person who asked the question to better understand your answer.
– Victor Zamanian
Apr 20 '18 at 10:01
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Getting pids from ps -ef |grep keyword
...u include the -f options. That makes pgrep match keywords in the whole command (including arguments) instead of just the process name.
pgrep -f keyword
From the man page:
-f The pattern is normally only matched against the process name. When -f is set, the full command line is used....