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Liquibase lock - reasons?
...e database helps.
Or you can simply drop the DATABASECHANGELOGLOCK table, it will be recreated.
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Finding duplicates in O(n) time and O(1) space
...nput: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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Is it good practice to make the constructor throw an exception? [duplicate]
Is it a good practice to make the constructor throw an exception?
For example I have a class Person and I have age as its only attribute. Now
I provide the class as
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What's the difference between commit() and apply() in SharedPreferences
I am using SharedPreferences in my android app. I am using both commit() and apply() method from shared preference. When I use AVD 2.3 it shows no error, but when I run the code in AVD 2.1, apply() method shows error.
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How can I detect the encoding/codepage of a text file
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You can't detect the codepage, you need to be told it. You can analyse the bytes and guess it, but that can give some bizarre (sometimes amusing) results. I can't find it now, but I'm sure Notepad can be tricked into displaying English text in Chinese.
Anyway, this is what ...
What's the yield keyword in JavaScript?
...a "yield" keyword in JavaScript, but I found very poor documentation about it. Can someone explain me (or recommend a site that explains) its usage and what it is used for?
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Difference between final and effectively final
I'm playing with lambdas in Java 8 and I came across warning local variables referenced from a lambda expression must be final or effectively final . I know that when I use variables inside anonymous class they must be final in outer class, but still - what is the difference between final and ef...
Why does C# forbid generic attribute types?
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Well, I can't answer why it's not available, but I can confirm that it's not a CLI issue. The CLI spec doesn't mention it (as far as I can see) and if you use IL directly you can create a generic attribute. The part of the C# 3 spec that bans it - se...
inline conditionals in angular.js
I was wondering if there is a way in angular to conditionally display content other than using ng-show etc. For example in backbone.js I could do something with inline content in a template like:
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What is @ModelAttribute in Spring MVC?
...property of the Model object (the M in MVC ;)
so let's say we have a form with a form backing object that is called "Person"
Then you can have Spring MVC supply this object to a Controller method by using the @ModelAttribute annotation:
public String processForm(@ModelAttribute("person") Person per...