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Copying a HashMap in Java
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If you want a copy of the HashMap you need to construct a new one with.
myobjectListB = new HashMap<Integer,myObject>(myobjectListA);
This will create a (shallow) copy of the map.
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How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
... practical answer instead of just being told that it shouldn't / can't be done.
– dodgy_coder
Feb 22 '12 at 0:53
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Algorithm to find top 10 search terms
...e book, but he surely must have been more famous due to this: "Motwani was one of the co-authors (with Larry Page and Sergey Brin, and Terry Winograd) of an influential early paper on the PageRank algorithm, the basis for Google's search techniques. " (en.wikipedia.org/wiki/Rajeev_Motwani)
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How do cache lines work?
...bytes that begin at the cache line boundary (the largest address below the one you need that is multiple of 64).
Modern PC memory modules transfer 64 bits (8 bytes) at a time, in a burst of eight transfers, so one command triggers a read or write of a full cache line from memory. (DDR1/2/3/4 SDRAM...
Google Chrome form autofill and its yellow background
...me remembers some login/password it changes a background color to a yellow one.
28 Answers
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How to remove the first commit in git?
...ent branch.
If what you want is to merge the first commit with the second one, you can use the rebase command:
git rebase -i --root
A last way could be to create an orphan branch, a branch with the same content but without any commit history, and commit your new content on it:
git checkout --or...
Wrong Manifest.mf in IntelliJ IDEA created .jar
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As noted in @grudolf's comment in one of the other answers, one way to do this (and the only one that worked for me in an imported Gradle project) is to create an empty jar as follows:
Project Structure -> Artifacts -> + Jar -> Empty
Centre pane no...
SET versus SELECT when assigning variables?
...NSI standard for variable assignment, SELECT is not.
SET can only assign one variable at a time, SELECT can make multiple assignments at once.
If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign...
What is the purpose of a stack? Why do we need it?
...a new processor. You have to write the code generator for it twenty times, one for each language.
Furthermore, it is difficult and dangerous work. Writing efficient code generators for chips that you are not an expert on is a hard job! Compiler designers are experts on the semantic analysis of thei...
Why does C# not provide the C++ style 'friend' keyword? [closed]
...C++; and would like to use it in C# too. But I bet because of C#'s "pure" OOness (compared to C++'s pseudo OOness) MS decided that because Java has no friend keyword C# shouldn't either (just kidding ;))
On a serious note: internal is not as good as friend but it does get the job done. Remember tha...