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When to use dynamic vs. static libraries
...eason to use dynamic libraries over static. Since Windows DLLs are not relocatable, code sharing often does not work (and usually each app ships and uses its own versions of the library anyways). The only real benefit is that it is easier to update the library.
– Zifre
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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 generate a create table script for an existing table in phpmyadmin?
How can I generate a create table script for an existing table in phpmyadmin?
10 Answers
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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...
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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