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How to Select Every Row Where Column Value is NOT Distinct
...s] WHERE [EmailAddress] IN
(SELECT [EmailAddress] FROM [Customers] GROUP BY [EmailAddress] HAVING COUNT(*) > 1)
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Display name of the current file in vim?
...ill do same as <C-G>. :f! will give a untruncated version, if applicable.
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IntelliJ IDEA jump from interface to implementing class in Java
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Yes.... in mac, it is Apple + ALT + B. You will need to move your cursor to the interface name before invoking the shortcut. I'm not sure what's the shortcut in PC, for if you right click the interface name -> "Go To" -> "Implementations"... the shortcut ...
sed error: “invalid reference \1 on `s' command's RHS”
I run several substitution commands as the core of a colorize script for maven .
One of the sed commands uses a regular expression which works find in the shell as discussed here . The current (not working) implementation can be found here .
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Convert pem key to ssh-rsa format
...ve a certificate in der format, from it with this command I generate a public key:
8 Answers
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What does a double * (splat) operator do
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Ruby 2.0 introduced keyword arguments, and ** acts like *, but for keyword arguments. It returns a Hash with key / value pairs.
For this code:
def foo(a, *b, **c)
[a, b, c]
end
Here's a demo:
> foo 10
=> [10, [], {...
How to output a comma delimited list in jinja python template?
If I have a list of users say ["Sam", "Bob", "Joe"] , I want to do something where I can output in my jinja template file:
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Mod in Java produces negative numbers [duplicate]
...I get 1 as the result of -1 % 2 .
What do I have to do to get the same behavior in Java with the modulo function?
5 Ans...
Getting the name of a variable as a string
...g the python-varname package, you can easily retrieve the name of the variables
https://github.com/pwwang/python-varname
In your case, you can do:
from varname import Wrapper
foo = Wrapper(dict())
# foo.name == 'foo'
# foo.value == {}
foo.value['bar'] = 2
For list comprehension part, you can do:
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Simple and fast method to compare images for similarity
...ty. I.e. I want to get a high value if they contain exactly the same thing but may have some slightly different background and may be moved / resized by a few pixel.
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