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Convert a list of data frames into one data frame
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since it's 2018 and dplyr is both fast and a solid tool to use, I've changed this to the accepted answer. The years, they fly by!
– JD Long
Jan 12 '19 at 12:03
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Left-pad printf with spaces
...nt exactly 40 spaces then some text, just save the 40 spaces in a constant and print them. If you need to print multiple lines, either use multiple printf statements like the one above, or do it in a loop, changing the value of ptr each time.
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How to convert a string or integer to binary in Ruby?
How do you create integers 0..9 and math operators + - * / in to binary strings.
For example:
6 Answers
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How to print a groupby object
I want to print the result of grouping with Pandas.
14 Answers
14
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Get the POST request body from HttpServletRequest
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In Java 8, you can do it in a simpler and clean way :
if ("POST".equalsIgnoreCase(request.getMethod()))
{
test = request.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
}
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Using curl to upload POST data with files
... I'm confused by the part about url-encoding the file. I have uploaded JPG and PNG files like this without modifying them, without any problems.
– Deanna Gelbart
May 16 '13 at 0:27
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Regex (grep) for multi-line search needed [duplicate]
...me followed by the word from . This select statement can span many lines and can contain tabs and newlines.
3 Answers
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How to get instance variables in Python?
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Every object has a __dict__ variable containing all the variables and its values in it.
Try this
>>> hi_obj = hi()
>>> hi_obj.__dict__.keys()
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Non greedy (reluctant) regex matching in sed?
...that don't work this way for sure, e.g. when parsing URL for its host part and pathname with final slash assumed optional to be excluded from capturing: ^(http:\/\/.+?)/?$
– Thomas Urban
Mar 17 at 8:40
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How to remove the lines which appear on file B from another file A?
...le1 file2 > file3 will output contents in file1 not in file2, to file3. And then mv file3 file1 would finally clear redundant contents in file1.
– Spectral
Jul 17 '14 at 20:48
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