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How to count the number of occurrences of an element in a List
...ld always try composition rather than inheritance. Your implementation is now stuck to ArrayList when there may be times you want a LinkedList or other. Your example should have taken another LIst in its constructor/factory and returned a wrapper.
– mP.
Feb 5...
:active pseudo-class doesn't work in mobile safari
...-color: rgba(0,0,0,0);">
Testing Touch on iOS
</button>
Now when the button is tapped and held on iOS, the button changes to the specified color without the surrounding transparent gray color appearing.
In other words, setting an ontouchstart event (even if it's empty) is explic...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...a via a mechanism where the browser will enforce the SOP, and you have to know about that preface and remove it before deserializing the data.
So yeah, it's about controlling (useful) access to that data.
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Optimal number of threads per core
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I know this question is rather old, but things have evolved since 2009.
There are two things to take into account now: the number of cores, and the number of threads that can run within each core.
With Intel processors, the nu...
How to set a Timer in Java?
...s true. I didn't answer the question as it was eventually stated and I've now updated it to address that.
– andrewmu
Feb 23 '13 at 20:29
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Always pass weak reference of self into block in ARC?
... NSUInteger idx, BOOL *stop) {
[self doSomethingWithObj:obj];
}];
Now, your object (self) has an explicit strong reference to the block. And the block has an implicit strong reference to self. That's a cycle, and now neither object will be deallocated properly.
Because, in a situation like...
Best way to store password in database [closed]
...if a trespasser gets a hold of your database, they can still use what are known as rainbow tables to be able to "decrypt" the password (at least those that show up in the rainbow table). To get around this, developers add a salt to passwords which, when properly done, makes rainbow attacks simply in...
How to upgrade Eclipse for Java EE Developers?
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Nice to know. But is the FAQ really up-to-date? Could user really upgrade 3.7 to 4.3 for example? What about all those plugins, that can break on newer platform?
– Paul Verest
Jun 28 '13 at 7:14
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How to test Spring Data repositories?
...tion parts of the repository are written in a way that they don't have to know about Spring Data JPA. They are plain Spring beans that get an EntityManager injected. You might of course wanna try to mock the interactions with it but to be honest, unit-testing the JPA has not been a too pleasant expe...
How can I define colors as variables in CSS?
I’m working on a CSS file that is quite long. I know that the client could ask for changes to the color scheme, and was wondering: is it possible to assign colors to variables, so that I can just change a variable to have the new color applied to all elements that use it?
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