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Spring: how do I inject an HttpServletRequest into a request-scoped bean?
I'm trying to set up a request-scoped bean in Spring.
3 Answers
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How to get visitor's location (i.e. country) using geolocation? [duplicate]
I'm trying to extend the native geolocation function
9 Answers
9
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Split Python Flask app into multiple files
I'm having trouble understanding how to split a flask app into multiple files.
4 Answers
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How to gzip all files in all sub-directories into one compressed file in bash
This post describes how to gzip each file individually within a directory structure. However, I need to do something slightly different. I need to produce one big gzip file for all files under a certain directory. I also need to be able to specify the output filename for the compressed file (e.g., ...
Transpose a data frame
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You'd better not transpose the data.frame while the name column is in it - all numeric values will then be turned into strings!
Here's a solution that keeps numbers as numbers:
# first remember the names
n <- df.aree$name
# transpose all but the first column (name)
df.aree <- as.dat...
Ruby on Rails: How do I add placeholder text to a f.text_field?
...ields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text?
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Vim Insert Mode on Mac OS X
Apparently Mac keyboards don't have an Insert key (or maybe they do but I can't find it). How can I get to insert mode in vim on a Mac?
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Is there an equivalent for var_dump (PHP) in Javascript?
We need to see what methods/fields an object has in Javascript.
18 Answers
18
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R - Concatenate two dataframes?
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You want "rbind".
b$b <- NA
new <- rbind(a, b)
rbind requires the data frames to have the same columns.
The first line adds column b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
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Convert XmlDocument to String
Here is how I'm currently converting XMLDocument to String
5 Answers
5
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