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Trending in Stackoverflow

See what the Stackoverflow community is most excited about today.

Date: 2017-12-10

  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. Center/Set Zoom of Map to cover all visible Markers?

    tags: javascript, google-maps-api-3

    221 votes, 4 answers and 108406 views

    \r\n I am setting multiple markers on my map and I can set statically the zoom levels and the center but what I want is, to cover all the markers and zoom as max as possible having all markets visible \n\n...\r\n

  3. 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

  4. Copy/duplicate database without using mysqldump

    tags: mysql

    402 votes, 7 answers and 455739 views

    \r\n Without local access to the server, is there any way to duplicate/clone a MySQL db (with content and without content) into another without using mysqldump?\n\nI am currently using MySQL 4.0.\r\n

  5. getWidth() and getHeight() of View returns 0

    tags: java, android, android-layout, getter

    330 votes, 8 answers and 216966 views

    \r\n I am creating all of the elements in my android project dynamically. I am trying to get the width and height of a button so that I can rotate that button around. I am just trying to learn how to work ...\r\n

  6. Swift | Adding constraints programmatically

    tags: ios, xcode, swift, uiview, autolayout

    230 votes, 11 answers and 201727 views

    \r\n I'm trying to figure this out since last week without going any step further. Ok, so I need to apply some constraints programmatically in Swift to a UIView using this code:\n\nvar new_view:UIView! = ...\r\n

  7. What are the uses of the exec command in shell scripts?

    tags: shell, unix, exec

    182 votes, 2 answers and 204064 views

    \r\n Can anyone explain what are the uses of the exec command in shell scripting with simple examples?\r\n

  8. How can I make a time delay in Python?

    tags: python, sleep, timedelay

    1642 votes, 10 answers and 1719771 views

    \r\n I would like to know how to put a time delay in a Python script.\r\n

  9. Is there a way to substring a string in Python?

    tags: python, string

    1365 votes, 12 answers and 1695033 views

    \r\n Is there a way to substring a string in Python, to get a new string from the 3rd character to the end of the string?\n\nMaybe like myString[2:end]?\n\nIf leaving the second part means 'till the end', if ...\r\n

  10. How to define multiple CSS attributes in JQuery?

    tags: jquery, css

    408 votes, 12 answers and 450083 views

    \r\n Is there any syntactical way in JQuery to define multiple CSS attributes without stringing everything out to the right like this:\n\n$("#message").css("width", "550px").css("height", "300px").css("font-...\r\n