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How do I measure time elapsed in Java? [duplicate]
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Unfortunately, none of the ten answers posted so far are quite right.
If you are measuring elapsed time, and you want it to be correct, you must use System.nanoTime(). You cannot use System.currentTimeMillis(), unless you don't mind your result being wrong.
The ...
Realistic usage of the C99 'restrict' keyword?
...aliasing, enabling better optimization by the compiler.
For instance, suppose I have a machine with specialized instructions that can multiply vectors of numbers in memory, and I have the following code:
void MultiplyArrays(int* dest, int* src1, int* src2, int n)
{
for(int i = 0; i < n; i++...
Checkout subdirectories in Git?
Is it possible to check out subdirectories of a repository in Git?
9 Answers
9
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Biggest GWT Pitfalls? [closed]
I'm at the beginning/middle of a project that we chose to implement using GWT. Has anyone encountered any major pitfalls in using GWT (and GWT-EXT) that were unable to be overcome? How about from a performance perspective?
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How do exceptions work (behind the scenes) in c++
...viously a lot of overhead in actually throwing and catching an exception. Most of it is hidden within __cxa_throw, which must:
Walk the stack with the help of the exception tables until it finds a handler for that exception.
Unwind the stack until it gets to that handler.
Actually call the handler...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...erldoc lib
Perl Module Mechanics - a great guide containing practical HOW-TOs
How do I 'use' a Perl module in a directory not in @INC?
Programming Perl - chapter 31 part 13, ch 7.2.41
How does a Perl program know where to find the file containing Perl module it uses?
There does not seem to be a co...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
...hand into building a web-scraper. It's nothing fancy at all; its only purpose is to get the data off of a betting website and have this data put into Excel.
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Why is Thread.Sleep so harmful
...enerally ranges from 15 to 30
milliseconds. This means the thread is almost guaranteed to block for
more than n milliseconds. The likelihood that your thread will
re-awaken exactly after n milliseconds is about as impossible as
impossible can be. So, Thread.Sleep is pointless for timing.
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What's the difference between a catalog and a schema in a relational database?
...ews and domains of the
Information Schema.
Database Language SQL, (Proposed revised text of DIS 9075), p 45
From the SQL point of view :
A catalog is often synonymous with database. In most SQL dbms, if you query the information_schema views, you'll find that values in the "table_catalog" c...
What is the “volatile” keyword used for?
... edited Aug 12 '15 at 19:16
akjoshi
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answered Aug 7 '10 at 14:26
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