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When should I use perror(“…”) and fprintf(stderr, “…”)?
Reading the man pages and some code did not really help me in
understanding the difference between - or better, when I should use - perror("...") or fprintf(stderr, "...") .
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How to Append in javascript? [duplicate]
...ain.com/somescript";
$("head").append(s);
Note that the script will load and you can access the variables inside it, but you wouldn't see the actual <script> tag in the DOM.
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Preserve line endings
I run sed to do some substitution on windows and I noticed that it automatically converts line endings to Unix (\n). Is there an option to tell sed to use Windows line endings (\r\n) or even better to preserve the line endings from the file?
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What is the best way to detect a mobile device?
... attribute? I would like to run a different script if the browser is on a handheld device.
59 Answers
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How to exclude certain messages by TAG name using Android adb logcat?
Logcat allows filtering logs but it works like that: You define filters and logcat only displays messages which matches filters. But is there a way to display all logs EXCEPT some TAGs defined by filters?
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Find maximum value of a column and return the corresponding row values using Pandas
...ut the length of the dataFrame & that index which satisfies the right hand side of the expression( .max()) returns the index, which in turn calls the complete row of that dataFrame
– penta
Feb 22 '19 at 5:28
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count the frequency that a value occurs in a dataframe column
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Use groupby and count:
In [37]:
df = pd.DataFrame({'a':list('abssbab')})
df.groupby('a').count()
Out[37]:
a
a
a 2
b 3
s 2
[3 rows x 1 columns]
See the online docs: http://pandas.pydata.org/pandas-docs/stable/groupby.html
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Generate a Hash from string in Javascript
...same as hash * 31 + char but a LOT faster. It's nice because it's so fast, and 31 is a small prime. Win win there.
– corsiKa
Sep 30 '11 at 21:59
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SVN command to delete all locally missing files
In SVN is there a command I can use to delete all locally missing files in a directory?
12 Answers
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Render HTML to PDF in Django site
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Try the solution from Reportlab.
Download it and install it as usual with python setup.py install
You will also need to install the following modules: xhtml2pdf, html5lib, pypdf with easy_install.
Here is an usage example:
First define this function:
import cStringI...