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How to wait for a keypress in R?
I want to pause my R script until the user presses a key.
6 Answers
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Should I use Java's String.format() if performance is important?
We have to build Strings all the time for log output and so on. Over the JDK versions we have learned when to use StringBuffer (many appends, thread safe) and StringBuilder (many appends, non-thread-safe).
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Best practices for overriding isEqual: and hash
How do you properly override isEqual: in Objective-C? The "catch" seems to be that if two objects are equal (as determined by the isEqual: method), they must have the same hash value.
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Android LinearLayout Gradient Background
I am having trouble applying a gradient background to a LinearLayout.
10 Answers
10
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How to solve PHP error 'Notice: Array to string conversion in…'
I have a PHP file that tries to echo a $_POST and I get an error, here is the code:
5 Answers
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How to unzip a file using the command line? [closed]
Which commands can be used via the command line to unzip a file?
Preferably something built into Windows or open source/free tools.
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capturing self strongly in this block is likely to lead to a retain cycle
How can I avoid this warning in xcode. Here is the code snippet:
7 Answers
7
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How to make a window always stay on top in .Net?
I have a C# winforms app that runs a macro in another program. The other program will continually pop up windows and generally make things look, for lack of a better word, crazy. I want to implement a cancel button that will stop the process from running, but I cannot seem to get the window to sta...
Calculate distance between two latitude-longitude points? (Haversine formula)
How do I calculate the distance between two points specified by latitude and longitude?
41 Answers
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How to urlencode data for curl command?
I am trying to write a bash script for testing that takes a parameter and sends it through curl to web site. I need to url encode the value to make sure that special characters are processed properly. What is the best way to do this?
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