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How is the fork/join framework better than a thread pool?
What are the benefits of using the new fork/join framework over just simply splitting the big task into N subtasks in the beginning, sending them to a cached thread pool (from Executors ) and waiting for each task to complete? I fail to see how using the fork/join abstraction simplifies the prob...
How to develop a soft keyboard for Android? [closed]
I would like to play around with some ideas and develop a soft keyboard for Android to replace the default one.
4 Answers
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Floating point vs integer calculations on modern hardware
I am doing some performance critical work in C++, and we are currently using integer calculations for problems that are inherently floating point because "its faster". This causes a whole lot of annoying problems and adds a lot of annoying code.
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ReactJS: Modeling Bi-Directional Infinite Scrolling
... big, you can instead pass a function that takes a range and return the elements.
<List>
{thousandelements.map(function() { return <Element /> })}
</List>
Your List component is keeping track of what the scroll position is and only renders the children that are in view. It add...
Pointers vs. values in parameters and return values
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tl;dr:
Methods using receiver pointers are common; the rule of thumb for receivers is, "If in doubt, use a pointer."
Slices, maps, channels, strings, function values, and interface values are implemented with pointers internally, an...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
Why do Scala and frameworks like Spark and Scalding have both reduce and foldLeft ? So then what's the difference between reduce and fold ?
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
'printf' vs. 'cout' in C++
...t people will say that printf is extensible too, but such extension is not mentioned in the C standard (so you would have to use non-standard features - but not even common non-standard feature exists), and such extensions are one letter (so it's easy to conflict with an already-existing format).
U...
PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
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What are the differences between local branch, local tracking branch, remote branch and remote track
... Git and I got really confused between different branches. Can anyone help me to figure out what the following branch types are?
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