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Unable to generate an explicit migration in entity framework
...the database OR you can delete the pending migration file ([201203170856167_left]) from your Migrations folder and then re-run "add-migration" to create a brand new migration based off of your edits.
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Windows equivalent of the 'tail' command
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Commands such as P, S, etc. can only be input by the user at the prompt. They cannot be passed-in to the more command. Thus, the example above does not work
– Philibert Perusse
Jul 23 '12 at 22:16
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How to determine if one array contains all elements of another array
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Perhaps this is easier to read:
a2.all? { |e| a1.include?(e) }
You can also use array intersection:
(a1 & a2).size == a1.size
Note that size is used here just for speed, you can also do (slower):
(a1 & a2) == a1
But I guess the first is more re...
Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
10 Answers
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How do you match only valid roman numerals with a regular expression?
...ioned by James Curran (to allow XM or IM for 990 or 999, and CCCC for 400, etc).
<opt-hundreds-part> = m/(?:[IXC][MD]|D?C{0,4})/;
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How can you disable Git integration in Visual Studio 2013 permanently?
...isable the source control plugin going to:
Tools / Options
Check "Show all settings"
Source Control / Plug-in Selection
Set "Current source control plug-in" to "None"
Then, as Ade Miller says: Restart Visual Studio.
My Visual Studio was working really slow since the git plugging was enabled ...
Fixed point vs Floating point number
...alue of 100 means actually means 1.00, 101 means 1.01, 12345 means 123.45, etc.
Floating point numbers are more general purpose because they can represent very small or very large numbers in the same way, but there is a small penalty in having to have extra storage for where the decimal place goes....
Clone private git repo with dockerfile
...mod 600 /repo-key && \
echo "IdentityFile /repo-key" >> /etc/ssh/ssh_config && \
echo -e "StrictHostKeyChecking no" >> /etc/ssh/ssh_config && \
// your git clone commands here...
Note that above switches off StrictHostKeyChecking, so you don't need ...
Remove spaces from std::string in C++
... preferred way to remove spaces from a string in C++? I could loop through all the characters and build a new string, but is there a better way?
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How to select rows from a DataFrame based on column values?
...have multiple values you want to include, put them in a
list (or more generally, any iterable) and use isin:
print(df.loc[df['B'].isin(['one','three'])])
yields
A B C D
0 foo one 0 0
1 bar one 1 2
3 bar three 3 6
6 foo one 6 12
7 foo three 7 14
Note,...