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Trending in Stackoverflow

See what the Stackoverflow community is most excited about today.

Date: 2018-01-06

  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. 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

  5. Best data type to store money values in MySQL

    tags: mysql, sqldatatypes, currency

    192 votes, 9 answers and 174109 views

    \r\n I want to store many records in a MySQL database. All of them contains money values. But I don't know how many digits will be inserted for each one.\nWhich data type do I have to use for this purpose?\n...\r\n

  6. How to pause / sleep thread or process in Android?

    tags: android, process, multithreading

    234 votes, 9 answers and 482315 views

    \r\n I want to make a pause between two lines of code, Let me explain a bit: \n\n-> the user clicks a button (a card in fact) and I show it by changing the background of this button: \n\nthisbutton....\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 do I list the symbols in a .so file

    tags: c++, c, gcc, symbols, name-mangling

    333 votes, 10 answers and 243454 views

    \r\n How do list the symbols being exported from a .so file. If possible, I'd also like to know their source (e.g. if they are pulled in from a static library).\n\nI'm using gcc 4.0.2, if that makes a ...\r\n

  9. 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

  10. Does use of final keyword in Java improve the performance?

    tags: java, final

    241 votes, 11 answers and 61073 views

    \r\n In Java we see lots of places where the final keyword can be used but its use is uncommon. \n\nFor example:\n\nString str = "abc";\nSystem.out.println(str);\r\nIn the above case, str can be final but this is ...\r\n