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Trending in Stackoverflow

See what the Stackoverflow community is most excited about today.

Date: 2017-12-30

  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. 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

  3. SQL query to select dates between two dates

    tags: sql, sql-server, tsql, datetime, sql-server-2005

    184 votes, 19 answers and 1195748 views

    \r\n I have a start_date and end_date. I want to get the list of dates in between these two dates. Can anyone help me pointing the mistake in my query.\n\nselect Date,TotalAllowance \nfrom Calculation \nwhere ...\r\n

  4. Table 'performance_schema.session_variables' doesn't exist

    tags: mysql, upgrade

    229 votes, 7 answers and 81703 views

    \r\n After upgrading MySQL to 5.7.8-rc\nand loging to server I got error:\n\nTable 'performance_schema.session_variables' doesn't exist\r\nI can't find any solution for this. Can you help ?\r\n

  5. Delete forked repo from GitHub

    tags: git, github

    392 votes, 8 answers and 307095 views

    \r\n I'm starting with git and GitHub and there's a project I'm watching on GitHub. I unintentionally clicked to fork it. Now it appears as a new project to me.\n\nI have some doubts about it:\r\nI know if ...\r\n

  6. 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

  7. View's getWidth() and getHeight() returns 0

    tags: java, android, android-layout, getter

    333 votes, 9 answers and 219579 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

  8. Copying files from Docker container to host

    tags: docker

    610 votes, 9 answers and 257849 views

    \r\n I'm thinking of using docker to build my dependencies on a CI server, so that I don't have to install all the runtimes and libraries on the agents themselves. To achieve this I would need to copy the ...\r\n

  9. 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

  10. Disable link using css

    tags: html, css

    666 votes, 15 answers and 865988 views

    \r\n Is there any way to disable a link using CSS?\n\nI have a class called current-page and want links with this class to be disabled so that no action occurs when they are clicked.\r\n