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How can I use pointers in Java?
...eard that Java programs can be created with pointers and that this can be done by the few who are experts in java. Is it true?
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Picking a random element from a set
...ts, i.e., structures that have a .get() function.
– coneyhelixlake
Feb 19 '15 at 22:27
4
@bourbak...
Is there a way to get a collection of all the Models in your Rails app?
...ook at the comments and other answers. There are smarter answers than this one! Or try to improve this one as community wiki.
Models do not register themselves to a master object, so no, Rails does not have the list of models.
But you could still look in the content of the models directory of your...
Can't start Eclipse - Java was started but returned exit code=13
...bit OS. After downgrading the JDK to 32-bit, Eclipse started working.
Use one of the following combinations.
32-bit OS, 32-bit JDK, 32-bit Eclipse (32-bit only)
64-bit OS, 32-bit JDK, 32-bit Eclipse
64-bit OS, 64-bit JDK, 64-bit Eclipse (64-bit only)
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What is the most efficient/elegant way to parse a flat table into a tree?
...tore all paths in the Closure Table, where there is a direct ancestry from one node to another. Include a row for each node to reference itself. For example, using the data set you showed in your question:
INSERT INTO ClosureTable (ancestor_id, descendant_id) VALUES
(1,1), (1,2), (1,4), (1,6),
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Why is processing a sorted array slower than an unsorted array?
...cy. A memory access can stall the CPU for 50-200 cycles. Given that number one could expect the program to become >10x slower when introducing random memory accesses.
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Refactoring in Vim
...ardly ever do it when I am coding but I may try to do it when editing some one else's source. How do you accomplish such a trivial task across multiple files in Vim?
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How do I assign a port mapping to an existing Docker container?
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worked for me, just one thing if using docker app on mac, follow instructions here to get to /var/lib/docker/containers folder: stackoverflow.com/a/41226917/2048266, basically run screen ~/Library/Containers/com.docker.docker/Data/com.docker.dri...
Finding Key associated with max Value in a Java Map
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+1: You can have more than one key with the same maximum value. This loop will give you the first one it finds.
– Peter Lawrey
May 6 '11 at 12:19
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How to convert an int value to string in Go?
...do the job. But Sprintf will use the package reflect, and it will allocate one more object, so it's not an efficient choice.
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