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Filter dataframe rows if value in column is in a set list of values [duplicate]
...e,
str.contains('pandas', case=False)
would match PANDAS, PanDAs, paNdAs123, and so on.
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How to replace case-insensitive literal substrings in Java
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I mean two things: 1. "blÁÜ123".replaceAll("(?i)bláü") does not replace anything. 2. "Sentence!End".replaceAll("(?i)Sentence.") does maybe replace more than anticipated.
– stracktracer
Apr 11 '12 at 11:54
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How to have the cp command create any necessary folders for copying a file to a destination [duplica
... edited Nov 14 '12 at 19:05
Oz123
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How to select rows with no matching entry in another table?
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AdaTheDevAdaTheDev
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How to print from GitHub
..., the tool is useless if it is not reliable.
– Ragnar123
Oct 28 '14 at 13:24
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note that this op...
Is bool a native C type?
...re all of its elements to be addressable (e.g. _Bool* ptr = &boolArray[123]).
– Dai
Apr 5 at 0:05
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Dynamically select data frame columns using $ and a character value
...is a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. S...
Python Pandas: Get index of rows which column matches certain value
...ool (PS: about how to use it please check link )
df.query('BoolCol')
Out[123]:
BoolCol
10 True
40 True
50 True
After we filter the original df by the Boolean column we can pick the index .
df=df.query('BoolCol')
df.index
Out[125]: Int64Index([10, 40, 50], dtype='int64')
Als...
Detecting syllables in a word
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123
Read about the TeX approach to this problem for the purposes of hyphenation. Especially see Fr...
Why are hexadecimal numbers prefixed with 0x?
...h is nicely divisible by 3 = log2(8).
The BCPL language used the syntax 8 1234 for octal numbers. When Ken Thompson created B from BCPL, he used the 0 prefix instead. This is great because
an integer constant now always consists of a single token,
the parser can still tell right away it's got a c...