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Java: Date from unix timestamp
...en just new java.util.Date((long)timeStamp);
From the documentation:
Allocates a Date object and
initializes it to represent the
specified number of milliseconds since
the standard base time known as "the
epoch", namely January 1, 1970,
00:00:00 GMT.
...
What are fixtures in programming?
...tate a method with @org.junit.After to release any permanent resources you allocated in setUp
For example, to write several test cases that want to work with different combinations of 12 Swiss Francs, 14 Swiss Francs, and 28 US Dollars, first create a fixture:
public class MoneyTest {
private M...
How does Stack Overflow generate its SEO-friendly URLs?
... string. That is, we never want “my-slug-”. This means an extra string allocation to remove it on this edge case. I’ve worked around this by delay-hyphening. If you compare my code to Jeff’s the logic for this is easy to follow.
His approach is purely lookup based and missed a lot of charact...
String concatenation vs. string substitution in Python
...-squared. Some languages will optimize concatenation to the most recently allocated string, but it's risky to count on the compiler to optimize your quadratic algorithm down to linear. Best to use the primitive (join?) that takes an entire list of strings, does a single allocation, and concatenate...
Why do people say that Ruby is slow? [closed]
...itude ahead of Ruby, Python, PHP etc. in the more algorithmic, less memory-allocation-intensive benchmarks above)
Ruby method calls are slow (although, because of duck typing, they are arguably faster than in strongly typed interpreted languages)
Ruby (with the exception of JRuby) does not support t...
Compelling examples of custom C++ allocators?
What are some really good reasons to ditch std::allocator in favor of a custom solution? Have you run across any situations where it was absolutely necessary for correctness, performance, scalability, etc? Any really clever examples?
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Difference between static memory allocation and dynamic memory allocation
I would like to know what is the difference between static memory allocation and dynamic memory allocation?
7 Answers
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What is memory fragmentation?
...emory fragmentation" used a few times in the context of C++ dynamic memory allocation. I've found some questions about how to deal with memory fragmentation, but can't find a direct question that deals with it itself. So:
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Which is faster: Stack allocation or Heap allocation
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Stack allocation is much faster since all it really does is move the stack pointer.
Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches...
ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
... did you manage to get it working? I have 1gb ram VPS, I always get cannot allocate memory error..
– Mohammed Noureldin
Jul 27 '17 at 15:50
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