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Mutable vs immutable objects
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Well, there are a few aspects to this.
Mutable objects without reference-identity can cause bugs at odd times. For example, consider a Person bean with a value-based equals method:
Map<Person, String> map = ...
Person p = new Person();
map.put(p, "Hey, there!");
p.setName...
OS X Bash, 'watch' command
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You can emulate the basic functionality with the shell loop:
while :; do clear; your_command; sleep 2; done
That will loop forever, clear the screen, run your command, and wait two seconds - the basic watch your_command implementation.
You can take this a s...
Google Analytics - Failed to load resource: http://www.google-analytics.com/ga.js
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It was a problem with AdBlock. I disabled it and now it loads it normally.
yagudaev suggests (read answers below) that in order to keep AdBlock from blocking Google Analytics, you need to edit the snippet provided and expli...
Java 8 Streams - collect vs reduce
...ollect() vs reduce() ? Does anyone have good, concrete examples of when it's definitely better to go one way or the other?
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Tool to track #include dependencies [closed]
...ile and output should be a list (preferably a tree) of all files including it directly or indirectly.
10 Answers
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How do you log all events fired by an element in jQuery?
... like to see all the events fired by an input field as a user interacts with it. This includes stuff like:
12 Answers
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getActivity() returns null in Fragment function
I have a fragment (F1) with a public method like this
15 Answers
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How is an overloaded method chosen when a parameter is the literal null value?
..., as per section 15.12.2.5 of the JLS. In particular:
The informal intuition is that one method is more specific than another if any invocation handled by the first method could be passed on to the other one without a compile-time type error.
In your second case, both methods are still applica...
Are there any free Xml Diff/Merge tools available? [closed]
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KDiff3 is not XML specific, but it is free. It does a nice job of comparing and merging text files.
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What's the difference between eval, exec, and compile?
...on, and exec is used to execute dynamically generated Python code only for its side effects.
eval and exec have these two differences:
eval accepts only a single expression, exec can take a code block that has Python statements: loops, try: except:, class and function/method definitions and so on...