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How do I return rows with a specific value first?
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On SQL Server, Oracle, DB2, and many other database systems, this is what you can use:
ORDER BY CASE WHEN city = 'New York' THEN 1 ELSE 2 END, city
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How to replace a character with a newline in Emacs?
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itsjeyd
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answered Mar 4 '09 at 23:52
Jonathan ArkellJonatha...
git rebase, keeping track of 'local' and 'remote'
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247
TL;DR;
To summarize (As Benubird comments), when:
git checkout A
git rebase B # rebase ...
Insert a row to pandas dataframe
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Just assign row to a particular index, using loc:
df.loc[-1] = [2, 3, 4] # adding a row
df.index = df.index + 1 # shifting index
df = df.sort_index() # sorting by index
And you get, as desired:
A B C
0 2 3 4
1 5 6 7
2 7 8 9
See in Pandas documentation Indexing: Se...
Append a Lists Contents to another List C#
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259
GlobalStrings.AddRange(localStrings);
Note: You cannot declare the list object using the int...
How can I count the number of matches for a regex?
...tches
When counting matches of aa in aaaa the above snippet will give you 2.
aaaa
aa
aa
To get 3 matches, i.e. this behavior:
aaaa
aa
aa
aa
You have to search for a match at index <start of last match> + 1 as follows:
String hello = "aaaa";
Pattern pattern = Pattern.compile("aa");...
Remove data.frame row names when using xtable
...; print(xtable(res), include.rownames=FALSE)
% latex table generated in R 2.12.2 by xtable 1.5-6 package
% Fri Mar 25 10:06:08 2011
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrrrr}
\hline
am & cyl & mpg & hp & wt \\
\hline
0.00 & 4.00 & 22.90 & 84.67 & 2....
How to show SQL queries run in the Rails console?
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254
Rails 3+
Enter this line in the console:
ActiveRecord::Base.logger = Logger.new(STDOUT)
Ra...
Looping over a list in Python
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200
Try this,
x in mylist is better and more readable than x in mylist[:] and your len(x) should ...
How to check if a string is a valid hex color representation?
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287
/^#[0-9A-F]{6}$/i.test('#AABBCC')
To elaborate:
^ -> match beginning
# ...