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Dynamically select data frame columns using $ and a character value
I have a vector of different column names and I want to be able to loop over each of them to extract that column from a data.frame. For example, consider the data set mtcars and some variable names stored in a character vector cols . When I try to select a variable from mtcars using a dynamic s...
Check if a string is html or not
I have a certain string for which I want to check if it is a html or not. I am using regex for the same but not getting the proper result.
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Java String remove all non numeric characters
Trying to remove all letters and characters that are not 0-9 and a period. I'm using Character.isDigit() but it also removes decimal, how can I also keep the decimal?
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Get Android Phone Model programmatically
...ould like to know if there is a way for reading the Phone Model programmatically in Android.
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Curious null-coalescing operator custom implicit conversion behaviour
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How can I transform string to UTF-8 in C#?
I have a string that I receive from a third party app and I would like to display it correctly in any language using C# on my Windows Surface.
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Convert data.frame column to a vector?
I have a dataframe such as:
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What is the difference between Java RMI and RPC?
What is the actual difference between Java RMI and RPC?
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