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How do I replace NA values with zeros in an R dataframe?
I have a data frame and some columns have NA values.
21 Answers
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How to recursively delete an entire directory with PowerShell 2.0?
What is the simplest way to forcefully delete a directory and all its subdirectories in PowerShell? I am using PowerShell V2 in Windows 7.
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How to check if an activity is the last one in the activity stack for an application?
I want to know if user would return to the home screen if he exit the current activity.
10 Answers
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How to check visibility of software keyboard in Android?
I need to do a very simple thing - find out if the software keyboard is shown. Is this possible in Android?
42 Answers
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Difference between database and schema
What's the difference between a Database and a Schema in SQL Server? Both are the containers of tables and data.
5 Answers
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How do I pull from a Git repository through an HTTP proxy?
Note: while the use-case described is about using submodules within a project, the same applies to a normal git clone of a repository over HTTP.
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Get the size of the screen, current web page and browser window
How can I get windowWidth , windowHeight , pageWidth , pageHeight , screenWidth , screenHeight , pageX , pageY , screenX , screenY which will work in all major browsers?
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PHP MySQL Google Chart JSON - Complete Example
I have searched a lot to find a good example for generating a Google Chart using MySQL table data as the data source. I searched for a couple of days and realised that there are few examples available for generating a Google Chart (pie, bar, column, table) using a combination of PHP and MySQL. I fin...
How to escape double quotes in JSON
I'm trying to show double quotes but it shows one of the backslashes:
7 Answers
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Using StringWriter for XML Serialization
I'm currently searching for an easy way to serialize objects (in C# 3).
6 Answers
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