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Trending in Stackoverflow

See what the Stackoverflow community is most excited about today.

Date: 2017-11-28

  1. How do I delete (unset) an exported environment variable?

    tags: linux, environment-variables, unset

    967 votes, 3 answers and 547486 views

    \r\n Before installing gnuplot I set the environment variable GNUPLOT_DRIVER_DIR = /home/gnuplot/build/src.\n\nDuring the installation something went wrong; now I want to remove the GNUPLOT_DRIVER_DIR ...\r\n

  2. Parallel.ForEach vs Task.Factory.StartNew

    tags: c#, c#-4.0, task-parallel-library, parallel-extensions

    213 votes, 4 answers and 97588 views

    \r\n What is the difference between the below code snippets? Won't both be using threadpool threads?\n\nFor instance if I want to call a function for each item in a collection,\n\nParallel.ForEach(...\r\n

  3. Notifications for new Github project releases?

    tags: github

    207 votes, 5 answers and 20393 views

    \r\n I'm using a library from a Github project. Is there some way to set up a notification for new project releases?\n\nFor example, I want to know when a new release appears here\n\nI know I can be notified ...\r\n

  4. What is the maximum recursion depth in Python, and how to increase it?

    tags: python, recursion

    183 votes, 11 answers and 185524 views

    \r\n I have this tail recursive function here:\n\ndef fib(n, sum):\n if n < 1:\n return sum\n else:\n return fib(n-1, sum+n)\n\nc = 998\nprint(fib(c, 0))\r\nIt works up to n=997, then it just ...\r\n

  5. System.currentTimeMillis vs System.nanoTime

    tags: java, timer, time-precision

    294 votes, 11 answers and 285741 views

    \r\n Accuracy Vs. Precision\n\nWhat I would like to know is whether I should use System.currentTimeMillis() or System.nanoTime() when updating my object's positions in my game? Their change in movement is ...\r\n

  6. Difference between FragmentPagerAdapter and FragmentStatePagerAdapter

    tags: android, android-fragments, android-viewpager, fragmentpageradapter, fragmentstatepageradapter

    257 votes, 6 answers and 72131 views

    \r\n What is the difference between FragmentPagerAdapter and FragmentStatePagerAdapter?\n\nAbout FragmentPagerAdapter Google's guide says:\r\n This version of the pager is best for use when there are a ...\r\n

  7. What is the difference between SQL, PL-SQL and T-SQL?

    tags: sql, tsql, plsql

    255 votes, 6 answers and 327783 views

    \r\n What is the difference between SQL, PL-SQL and T-SQL?\n\nCan anyone explain what the differences between these three are, and provide scenarios where each would be relevantly used?\r\n

  8. How can Python iterate over dictionaries with 'for' loops using only the dict keys?

    tags: python, python-2.7, dictionary, key, iteration

    1657 votes, 12 answers and 2233477 views

    \r\n I am a bit puzzled by the following code:\n\nd = {'x': 1, 'y': 2, 'z': 3} \nfor key in d:\n print key, 'corresponds to', d[key]\r\nWhat I don't understand is the key portion. How does Python recognize ...\r\n

  9. Command Line Tools not working - OS X El Capitan/macOS Sierra/macOS High Sierra

    tags: osx, macos-sierra, osx-elcapitan, macos-high-sierra

    413 votes, 7 answers and 151534 views

    \r\n I just upgraded from Yosemite to El Capitan (and replicated the problem upgrading from El Capitan to Sierra), and when I try to type for example git status inside a terminal, I get the following error:...\r\n

  10. What is the difference between --save and --save-dev?

    tags: save, package, npm

    277 votes, 7 answers and 67027 views

    \r\n What is the difference between: \r\n npm install [package_name] --save\r\nand \r\n npm install [package_name] --save-dev\r\nWhat does this mean?\r\n