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Make $JAVA_HOME easily changable in Ubuntu [closed]
In Ubuntu, I'd like to switch my JAVA_HOME environment variable back and forth between Java 5 and 6.
8 Answers
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PHP DateTime::modify adding and subtracting months
I've been working a lot with the DateTime class and recently ran into what I thought was a bug when adding months. After a bit of research, it appears that it wasn't a bug, but instead working as intended. According to the documentation found here :
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What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
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I have used both JXL (now "JExcel") and Apache POI. At first I used JXL, but now I use Apache POI.
First, here are the things where both APIs have the same end functionality:
Both are free
Cell styling: alignment, backgrounds (colors and patterns), borders
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Any reason not to use '+' to concatenate two strings?
...e Python interpreter has to create a new string object for each iteration, and it ends up taking quadratic time. (Recent versions of CPython can apparently optimize this in some cases, but other implementations can't, so programmers are discouraged from relying on this.) ''.join is the right way t...
Is GridFS fast and reliable enough for production?
I develop a new website and I want to use GridFS as storage for all user uploads, because it offers a lot of advantages compared to a normal filesystem storage.
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Is it worthwile to learn assembly language? [closed]
...you have to hunt out obsessives on the net.
I think it's useful to understand what happens at the lower levels. As you research assembler you will learn about cpu pipelining, branch prediction, cache alignment, SIMD, instruction reordering and so on. Knowledge of these will help you write better hi...
Can “using” with more than one resource cause a resource leak?
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@WeylandYutani: What are you asking?
– SLaks
Jan 14 '14 at 16:18
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Difference between static and shared libraries?
What is the difference between static and shared libraries?
8 Answers
8
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How big can a MySQL database get before performance starts to degrade
...you are going to run in to is not size, but the number of queries you can handle at a time. Most likely you are going to have to move to a master/slave configuration so that the read queries can run against the slaves and the write queries run against the master. However if you are not ready for t...
Git pre-push hooks
I would like to run a unit-tests before every git push and if tests fails, cancel the push, but I can't even find pre-push hook, there is pre-commit and pre-rebase only.
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