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Run an OLS regression with Pandas Data Frame
... the statsmodels package which was one of pandas' optional dependencies before pandas' version 0.20.0 (it was used for a few things in pandas.stats.)
>>> import pandas as pd
>>> import statsmodels.formula.api as sm
>>> df = pd.DataFrame({"A": [10,20,30,40,50], "B": [20, 3...
What's a good way to extend Error in JavaScript?
...ant to throw some things in my JS code and I want them to be instanceof Error, but I also want to have them be something else.
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Renaming branches remotely in Git
If there is a repository that I only have git:// access to (and would usually just push+pull), is there a way to rename branches in that repository in the same way that I would do locally with git branch -m ?
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HTML - how can I show tooltip ONLY when ellipsis is activated
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Thanks, works like a charm! However if you want to make it more efficient you might consider replacing bind() with on() like so: $(document).on('mouseenter', '.mightOverflow', function() { ... });
– Ziad
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How to parse JSON using Node.js? [closed]
... built on Google Chrome's V8 engine, which adheres to ECMA standard. Therefore, node.js also has a global object JSON[docs].
Note - JSON.parse can tie up the current thread because it is a synchronous method. So if you are planning to parse big JSON objects use a streaming json parser.
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Why does the is operator return false when given null?
It seems to me that the is operator is a bit inconsistent.
7 Answers
7
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how do i remove a comma off the end of a string?
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$string = rtrim($string, ',');
Docs for rtrim here
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How to check if a file exists from inside a batch file [duplicate]
...ame here> (
rem file exists
) else (
rem file doesn't exist
)
Or on a single line (if only a single action needs to occur):
if exist <insert file name here> <action>
for example, this opens notepad on autoexec.bat, if the file exists:
if exist c:\autoexec.bat notepad c:\...
A simple example for someone who wants to understand Dynamic Programming [closed]
I am looking for a manageably understandable example for someone who wants to learn Dynamic Programming. There are nice answers here about what is dynamic programming . The fibonacci sequence is a great example, but it is too small to scratch the surface. It looks a great subject to learn about alt...
Quick easy way to migrate SQLite3 to MySQL? [closed]
...re is a list of converters (not updated since 2011):
https://www2.sqlite.org/cvstrac/wiki?p=ConverterTools (or snapshot at archive.org)
An alternative method that would work nicely but is rarely mentioned is: use an ORM class that abstracts specific database differences away for you. e.g. you ...