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Simultaneously merge multiple data.frames in a list
... c 3 5 7
We don't have to take all columns, we can use select helpers from tidyselect and
choose (as we start from .x all .x columns are kept):
eat(x, list(y,z), starts_with("l") ,.by = "i")
# # A tibble: 3 x 3
# i j l
# <chr> <int> <int>
# 1 a ...
How can I copy & paste, or duplicate, an existing project?
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Click on "new job" and then select "Copy existing job" at the bottom. Then enter the name of the job you want to copy into the text field.
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impr...
MySQLDump one INSERT statement for each data row
...tings. See the discussion of mysqldump option groups for information about selectively enabling or disabling a subset of the options affected by --opt.
--skip-extended-insert
Turn off extended-insert
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Git resolve conflict using --ours/--theirs for all files
... is a way for checkout, but I do not honestly think it is terribly useful: selecting the strategy with the checkout command is useful if you want different solutions for different files, otherwise just go for the merge strategy approach.
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Converting timestamp to time ago in PHP e.g 1 day ago, 2 days ago…
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Terrible solution. Why does this have 42 upvotes and selected answer? Since when does every month have 30 days?
– BadHorsie
Mar 14 '14 at 17:22
5
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Simple calculations for working with lat/lon and km distance?
...hy;
SET @CurrentLocation = geography::Point(12.822222, 80.222222, 4326)
SELECT * , Round (GeoLocation.STDistance(@CurrentLocation ),0) AS Distance FROM [Landmark]
WHERE GeoLocation.STDistance(@CurrentLocation )<= 2000 -- 2 Km
There should be similar functionality for almost any database out ...
MongoDB not equal to
... is:
db.inventory.find( { price: { $not: { $gt: 1.99 } } } )
That would select all documents where:
The price field value is less than or equal to 1.99 or the price
Field does not exist
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Symbolicating iPhone App Crash Reports
...able if the script complains about it like so: export DEVELOPER_DIR=`xcode-select --print-path` . I added this line to my ~/.bash_profile. See stackoverflow.com/q/11682789/350761
– Eliot
Sep 22 '13 at 6:54
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Difference between numpy.array shape (R, 1) and (R,)
...bine or even expand them.
M=np.arange(9).reshape(3,3)
M[:,0].shape # (3,) selects one column, returns a 1d array
M[0,:].shape # same, one row, 1d array
M[:,[0]].shape # (3,1), index with a list (or array), returns 2d
M[:,[0,1]].shape # (3,2)
In [20]: np.dot(M[:,0].reshape(3,1),np.ones((1,3)))
Out...
Xcode 4.5 Storyboard 'Exit'
... for your unwind segue and then connect from an element to the exit button selecting the method you wish to call. You can find an example here (I have updated my answer as well to include the example)
– Alladinian
Oct 22 '12 at 8:18
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