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How do I drop a function if it already exists?
I know this must be simple, but how do I preface the creation of a function with a check to see if it already exists? If it exists, I want to drop and re-create it.
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Selecting only numeric columns from a data frame
Suppose, you have a data.frame like this:
11 Answers
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Remove everything after a certain character
... to remove everything after a certain character or just choose everything up to that character? I'm getting the value from an href and up to the "?", and it's always going to be a different amount of characters.
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Mongoose.js: Find user by username LIKE value
...ke to to go find a user in mongoDb by looking for a user called value.
The problem with:
13 Answers
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How to invoke a Linux shell command from Java
...trying to execute some Linux commands from Java using redirection (>&) and pipes (|). How can Java invoke csh or bash commands?
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Best GUI designer for eclipse? [closed]
I'm looking for a good GUI designer for swing in eclipse. My preference is for a free/open-source plugin.
12 Answers
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Set the value of a variable with the result of a command in a Windows batch file
...tead suggest using Cygwin on your Windows system if you are used to Unix-type scripting.
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Skip download if files exist in wget?
This is simplest example running wget:
4 Answers
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Detect when a window is resized using JavaScript ?
Is there any way with jQuery or JavaScript to trigger a function when the user ends to resize the browser window?
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copying all contents of folder to another folder using batch file?
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xcopy.exe is the solution here. It's built into Windows.
xcopy /s c:\Folder1 d:\Folder2
You can find more options at http://www.computerhope.com/xcopyhlp.htm
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