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How to join (merge) data frames (inner, outer, left, right)
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By using the merge function and its optional parameters:
Inner join: merge(df1, df2) will work for these examples because R automatically joins the frames by common variable names, but you would most likely want to specify merge(df1, df2, by = "CustomerId"...
How do I replace all line breaks in a string with elements?
How can I read the line break from a value with JavaScript and replace all the line breaks with <br /> elements?
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How to find the mime type of a file in python?
...hod suggested by toivotuo is outdated. Python-magic's current trunk is at Github and based on the readme there, finding the MIME-type, is done like this.
# For MIME types
import magic
mime = magic.Magic(mime=True)
mime.from_file("testdata/test.pdf") # 'application/pdf'
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delete word after or around cursor in VIM
I'm now switching to VIM from TextMate. I found ^+W in INSERT mode very useful. However, I'd like to delete not only the word before cursor, but the word after or around cursor as well.
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How to add a list item to an existing unordered list?
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This would do it:
$("#header ul").append('<li><a href="/user/messages"><span class="tab">Message Center</span></a></li>');
Two things:
You can just append the <li> to the <ul> itself.
Yo...
how can I Update top 100 records in sql server
I want to update the top 100 records in SQL Server. I have a table T1 with fields F1 and F2 . T1 has 200 records. I want to update the F1 field in the top 100 records. How can I update based on TOP 100 in SQL Server?
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How to debug .htaccess RewriteRule not working
I have a RewriteRule in a .htaccess file that isn't doing anything. How do I troubleshoot this?
8 Answers
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How to get Git to clone into current directory
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simply put a dot next to it
git clone git@github.com:user/my-project.git .
From git help clone:
Cloning into an existing directory is only allowed if the directory is empty.
So make sure the directory is empty (check with ls -a), otherwise t...
How to store a dataframe using Pandas
...stantly available in between runs so I don't have to spend all that time waiting for the script to run?
12 Answers
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Scrollable Menu with Bootstrap - Menu expanding its container when it should not
I tried this method ( their fiddle ) to enable scrollable menu with Bootstrap, but with that approach, the scrollable menu expands its container -- fiddle -- the non-scrollable menu, correctly, does not do this.
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