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When should I use the “strictfp” keyword in java?

...rict expressions must be those predicted by IEEE 754 arithmetic on operands represented using single and double formats. Within an expression that is not FP-strict, some leeway is granted for an implementation to use an extended exponent range to represent intermediate results; the n...
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How do I choose grid and block dimensions for CUDA kernels?

This is a question about how to determine the CUDA grid, block and thread sizes. This is an additional question to the one posted here . ...
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how to use javascript Object.defineProperty

...ed to find EVERY occurence of the discount modification in the client code and add a line if(obj.discount>80) obj.discount = 80; Then the e-shop owner may further change his strategy, like "if the customer is reseller, the maximal discount can be 90%". And you need to do the change on multiple...
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Multidimensional Array [][] vs [,] [duplicate]

... One is an array of arrays, and one is a 2d array. The former can be jagged, the latter is uniform. That is, a double[][] can validly be: double[][] x = new double[5][]; x[0] = new double[10]; x[1] = new double[5]; x[2] = new double[3]; x[3] = new d...
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Apache Spark: map vs mapPartitions?

What's the difference between an RDD's map and mapPartitions method? And does flatMap behave like map or like mapPartitions ? Thanks. ...
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Is this a “good enough” random algorithm; why isn't it used if it's faster?

I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part. ...
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Archives not showing up in Organizer for Xcode 4

...t use archive. It will show up then. In the scheme editor, edit the scheme and go to the Archive tab, make sure the check box for show in Organizer is checked. In the archive tab in the scheme editor check the build configuration used for archiving. Make sure it has the right entitlements file &...
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/etc/apt/sources.list" E212: Can't open file for writing

...as sudo vim FILE. Or if you don't want to leave your existing vim session (and now have proper sudo rights), you can issue: :w !sudo tee % > /dev/null Which will save the file. HTH share | im...
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Quick Sort Vs Merge Sort [duplicate]

...e its inner loop can be efficiently implemented on most architectures, and in most real-world data, it is possible to make design choices which minimize the probability of requiring quadratic time. Note that the very low memory requirement is a big plus as well. ...
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How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?

I've searched up and down the internet for this one. There's lots of half-answers out there, to do with Maven properties such as ${sonar.jacoco.reportPath} , or org.jacoco:jacoco-maven-plugin:prepare-agent or setting maven-surefire-plugin argLine with -javaagent . ...