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MPICH vs OpenMPI
...xtensive optimizations that make it the preferred implementation in nearly all cases.
Feature Support from the Latest MPI Standard
An orthogonal axis to hardware/platform support is coverage of the MPI standard. Here MPICH is usually far and away superior. MPICH has been the first implementation...
What is the difference between Strategy design pattern and State design pattern?
...ce to the context object that contains them. Strategies do not.
States are allowed to replace themselves (IE: to change the state of the context object to something else), while Strategies are not.
Strategies are passed to the context object as parameters, while States are created by the context obj...
How to check type of files without extensions in python?
...ecause it is likely not useful in other operating systems with a different API.
– erikbwork
Dec 17 '13 at 16:17
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iOS 5 Best Practice (Release/retain?)
...e for writing apps to be used either with iOS 5 or older versions? Specifically, should I continue using the release/retain of data, or should I ignore that? Does it matter?
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Are there any JavaScript static analysis tools? [closed]
... Dec 14 '11 at 4:54
Andrew Marshall
87.3k1818 gold badges202202 silver badges204204 bronze badges
answered Apr 2 '09 at 17:46
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An expression tree may not contain a call or invocation that uses optional arguments
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The underlying expression tree API does not support optional arguments.
For IL-compiled code the C# compiler inserts the default values at compile time (hard-coded), because the CLR does not support calling methods with optional arguments either when the ...
MongoDb query condition on comparing 2 fields
...project and $match to implement field level redaction where it will return all documents matching the condition using $$KEEP and removes from the pipeline results those that don't match using the $$PRUNE variable.
Running the following aggregate operation filter the documents more efficiently tha...
How to return a string value from a Bash function
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+1 @tomas-f : you have to be really careful on what you have in this function "getSomeString()" as having any code which will eventually echo will mean that you get incorrect return string.
– Mani
Sep 14 '12 at 16:38
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Why is Go so slow (compared to Java)?
...n spends runtime supporting language features that the benchmark doesn't really need. In most compiled languages a sufficiently clever compiler could in theory strip out what isn't needed, but there comes a point where you're rigging the demo, since very few real users of the language would write pr...
JavaScript: client-side vs. server-side validation
... UI. Not only can they abuse your UI, but they may not be using your UI at all, or even a browser. What if the user manually edits the URL, or runs their own Javascript, or tweaks their HTTP requests with another tool? What if they send custom HTTP requests from curl or from a script, for example?
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