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How do I install Python packages on Windows?
...ps to install pip on Windows, it's quite easy.
Install setuptools:
curl https://bootstrap.pypa.io/ez_setup.py | python
Install pip:
curl https://bootstrap.pypa.io/get-pip.py | python
Optionally, you can add the path to your environment so that you can use pip anywhere. It's somewhere like C:\P...
Reading an Excel file in python using pandas
..._xlsx_filename','rb'), sheetname=2)
check out documentation full details
http://pandas.pydata.org/pandas-docs/version/0.17.1/generated/pandas.read_excel.html
FutureWarning: The sheetname keyword is deprecated for newer Pandas versions, use sheet_name instead.
...
How to obtain the query string from the current URL with JavaScript?
...turls[0];
alert(url)
}
myfunction(window.top.location.href);
myfunction("http://www.myname.com/index.html?id=dance&emp;cid=in_social_facebook-hhp-food-moonlight-influencer_s7_20160623");
here is the fiddle
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How to clear the cache in NetBeans
...S X
Cache is at: ~/Library/Caches/NetBeans/${netbeans_version}/
See also http://wiki.netbeans.org/FaqWhatIsUserdir.
Help Menu
On Windows, selecting the Help » About menu will display a dialog that contains the following text:
Product Version: NetBeans IDE 8.0.2 (Build 201411181905)
Java: 1.7.0...
How to split the name string in mysql?
..., locate, substring_index, etc. Check the manual for some real confusion. http://dev.mysql.com/doc/refman/5.0/en/string-functions.html
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What do two question marks together mean in C#?
...
It's the null coalescing operator.
http://msdn.microsoft.com/en-us/library/ms173224.aspx
Yes, nearly impossible to search for unless you know what it's called! :-)
EDIT: And this is a cool feature from another question. You can chain them.
Hidden Features ...
What is meant with “const” at end of function declaration? [duplicate]
...ence you gave it.
I go to this page every time I need to think about it:
http://www.parashift.com/c++-faq-lite/const-correctness.html
I believe there's also a good chapter in Meyers' "More Effective C++".
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Unknown Column In Where Clause
...
See the following MySQL manual page: http://dev.mysql.com/doc/refman/5.0/en/select.html
"A select_expr can be given an alias
using AS alias_name. The alias is used
as the expression's column name and
can be used in GROUP BY, ORDER BY, or
HAVING claus...
What's the best way to use R scripts on the command line (terminal)?
...ts to an R script try RScript which is bundled with R as of version 2.5.x
http://stat.ethz.ch/R-manual/R-patched/library/utils/html/Rscript.html
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How do I specify a password to 'psql' non-interactively?
...PGPASSWORD=pass1234 psql -U MyUsername myDatabaseName
For reference, see http://www.postgresql.org/docs/current/static/libpq-envars.html
Edit
Since Postgres 9.2 there is also the option to specify a connection string or URI that can contain the username and password.
Using that is a securit...