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Difference between HBase and Hadoop/HDFS
...ent, a column qualifier might be content:html and another might be content:pdf. Though column families are fixed at table creation, column qualifiers are mutable and may differ greatly between rows.
Cell
A cell is a combination of the row, column family, and column qualifier, and contains a value...
General suggestions for debugging in R
... seen so far is:
http://www.biostat.jhsph.edu/%7Erpeng/docs/R-debug-tools.pdf
Anybody agree/disagree?
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Choose File Dialog [closed]
...this code pick multiple file format ie fileDialog.setFileEndsWith(".txt",".pdf"); or fileDialog.setFileEndsWith("fle/*"); please answr
– Anitha
Jan 29 '15 at 11:46
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How does Go compile so quickly?
...rences:
[1] http://www.inf.ethz.ch/personal/wirth/ProjectOberon/PO.System.pdf, page 6: "The compiler compiles itself in about 3 seconds". This quote is for a low cost Xilinx Spartan-3 FPGA development board running at a clock frequency of 25 MHz and featuring 1 MByte of main memory. From this one c...
What is a PDB file?
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@Ata: PDB, not PDF. Please separate the two in your mind - they're completely different file formats, for different purposes. Including a PDB wouldn't introduce a problem particularly; it may make a hacker's job slightly easier, but is that...
How can I use threading in Python?
...in tasks like this! As was shown by Dave Beazley: dabeaz.com/python/NewGIL.pdf, 2 python threads on 2 CPUs carry out a CPU-heavy task 2 times SLOWER than 1 thread on 1 CPU and 1.5 times SLOWER than 2 threads on 1 CPU. This bizarre behavior is due to mis-coordination of efforts between OS and Python....
Stack, Static, and Heap in C++
...o the size of the heap -- see hpl.hp.com/personal/Hans_Boehm/gc/complexity.html.
– Martin B
Aug 5 '09 at 11:00
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What's the difference between “STL” and “C++ Standard Library”?
...o be in the company of Bjarne Stroustrup - ref. eg. stroustrup.com/DnE2005.pdf : "the STL (the "Standard Template Library"; that is, the containers and algorithm framework of the ISO C++ standard library)"
– Sander De Dycker
Aug 11 '14 at 13:21
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What is the memory consumption of an object in Java?
....virginia.edu/kim/publicity/pldi09tutorials/memory-efficient-java-tutorial.pdf is also very informative, for example:
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Design by contract using assertions or exceptions? [closed]
...ssertion failing. In this document (martinfowler.com/ieeeSoftware/failFast.pdf), Jim Shore points out, "Remember, an error that occurs at the customer’s site made it through your testing process. You’ll probably have trouble reproducing it. These errors are the hardest to find, and a well-placed...