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Combine two columns of text in pandas dataframe
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if both columns are strings, you can concatenate them directly:
df["period"] = df["Year"] + df["quarter"]
If one (or both) of the columns are not string typed, you should convert it (them) first,
df["period"] = df["Year"].astype(str) + df["quarter"]
Beware of...
How can I resize an image dynamically with CSS as the browser width/height changes?
...ative units should make your life way easier, given we have the image of a cat:
Now we want this cat inside our code, while respecting aspect ratios:
img {
width: 100%;
height: auto;
}
<img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat">
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Why should text files end with a newline?
... Unix tools expect this convention and work with it. For instance, when concatenating files with cat, a file terminated by newline will have a different effect than one without:
$ more a.txt
foo
$ more b.txt
bar$ more c.txt
baz
$ cat {a,b,c}.txt
foo
barbaz
And, as the previous example also demonst...
Remove duplicate lines without sorting [duplicate]
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Surely it would be less obfuscated to name that array e.g. seen instead of x, to avoid giving newbies the impression that awk syntax is line noise
– Josip Rodin
Dec 21 '15 at 10:43
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How to check if a value exists in an array in Ruby
I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird'] .
26 Answers
26
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How to retrieve a single file from a specific revision in Git?
... <rev>
show a list of one or more 'blob' objects within a commit
git cat-file blob <file-SHA1>
cat a file as it has been committed within a specific revision (similar to svn
cat).
use git ls-tree to retrieve the value of a given file-sha1
git cat-file -p $(git-ls-tree $REV $file | cut -d...
Regex: match everything but specific pattern
... answered Nov 6 '09 at 13:40
Cat Plus PlusCat Plus Plus
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How to split a comma-separated string?
... Keep in mind this won't trim the values so strings.get(1) will be " cat" not "cat"
– Alb
Jun 28 '13 at 15:33
46
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In Bash, how do I add a string after each line in a file?
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I prefer echo. using pure bash:
cat file | while read line; do echo ${line}$string; done
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How to add Git's branch name to the commit message?
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DESCRIPTION=$(git config branch."$NAME".description)
echo "$NAME"': '$(cat "$1") > "$1"
if [ -n "$DESCRIPTION" ]
then
echo "" >> "$1"
echo $DESCRIPTION >> "$1"
fi
Creates following commit message:
[branch_name]: [original_message]
[branch_description]
I'm using issu...