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Trending in Stackoverflow

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Date: 2017-11-23

  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 do I exit from the text window in Git?

    tags: git, vim

    213 votes, 4 answers and 154152 views

    \r\n I am using Windows and before committing, Git wants me to enter a text message and a new text window appears. \r\nHow can I exit from this? \n\nI am trying to learn Git. So, a little help will be highly ...\r\n

  3. “use database_name” command in PostgreSQL

    tags: postgresql, postgresql-9.1

    216 votes, 4 answers and 178259 views

    \r\n I am beginner to PostgreSQL.\n\nI want to connect to another database from the query editor of Postgres - like the USE command of MySQL or MS SQL Server. \n\nI found \c databasename by searching the ...\r\n

  4. How to use radio on change event?

    tags: jquery, jquery-ui

    278 votes, 5 answers and 421856 views

    \r\n I have two radio button \non change event i want change button How it is possible?\nMy Code \n\nAllot\n<input type="...\r\n

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

    tags: mysql, upgrade

    221 votes, 6 answers and 78998 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

  6. 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

  7. Can you force a React component to rerender without calling setState?

    tags: reactjs, react-jsx

    223 votes, 8 answers and 279239 views

    \r\n I have an external (to the component), observable object that I want to listen for changes on. When the object is updated it emits change events, and then I want to rerender the component when any ...\r\n

  8. What's the difference between ASCII and Unicode?

    tags: unicode, ascii

    207 votes, 8 answers and 223206 views

    \r\n Can I know the exact difference between Unicode and ASCII? \n\nASCII has a total of 128 characters (256 in the extended set). \n\nIs there any size specification for Unicode characters?\r\n

  9. Passing parameters to a Bash function

    tags: bash

    555 votes, 7 answers and 587716 views

    \r\n I am trying to search how to pass parameters in a Bash function, but what comes up is always how to pass parameter from the command line. \n\nI would like to pass parameters within my script. I tried:\n\n...\r\n

  10. How do you use “git --bare init” repository?

    tags: git

    211 votes, 9 answers and 195068 views

    \r\n I need to create a central Git repository but I'm a little confused...\n\nI have created a bare repository (in my git server, machine 2) with:\n\n$ mkdir test_repo\n$ git --bare init\r\nNow I need to push ...\r\n