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How to get row from R data.frame
...ta row-wise.
x <- x %>% slice(1) #(n) for the nth row, or (i:n) for range i to n, (i:n()) for i to last row...
x
#> A B C
#> 1 5 4.25 4.5
#Test that the items in the row match the vector you wanted
x[1,]==y
#> A B C
#> 1 TRUE TRUE TRUE
Created on 2020-08-06 by...
Why is Double.MIN_VALUE in not negative
...ting point numbers, the precision is what is important as there's no exact range.
/**
* A constant holding the smallest positive nonzero value of type
* <code>double</code>, 2<sup>-1074</sup>. It is equal to the
* hexadecimal floating-point literal
* <code>0x0.0000...
How to round the minute of a datetime object
...ndas it needs to be in Series format.
>>> ts = pd.Series(pd.date_range(Dt(2019,1,1,1,1),Dt(2019,1,1,1,4),periods=8))
>>> print(ts)
0 2019-01-01 01:01:00.000000000
1 2019-01-01 01:01:25.714285714
2 2019-01-01 01:01:51.428571428
3 2019-01-01 01:02:17.142857142
4 2019-01-01...
How to modify existing, unpushed commit messages?
... in the last n commits, and if there was a merge somewhere in between that range you will see all the commits as well, so the outcome will be n + .
Good tip:
If you have to do it for more than a single branch and you might face conflicts when amending the content, set up git rerere and let Git resol...
What's the difference between an id and a class?
...specific HTML element, and I use classes to access/apply styles to a broad range of elements.
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How to check for Is not Null And Is not Empty string in SQL server?
...If there is a covering index on Col SQL Server can convert <> to two range seeks on <'' and >''
– Martin Smith
Jul 16 at 8:27
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How to show git log history for a sub directory of a git repo?
...ic subdirectory.
Example: Show all detailed changes in a specific version range
git log -p 8a5fb..HEAD -- A B
commit 62ad8c5d
Author: Scott Tiger
Date: Mon Nov 27 14:25:29 2017 +0100
My comment
...
@@ -216,6 +216,10 @@ public class MyClass {
+ Added
- Deleted
...
How to open a web server port on EC2 instance
... answer just instead of using the drop down, type the port (8787) in "port range" an then "Add rule".
Go to the "Network & Security" -> Security Group settings in the left hand navigation
Find the Security Group that your instance is apart of
Click on Inbound Rules
...
Why would $_FILES be empty when uploading files to PHP?
... Not too large any more. We have clients who upload files in the 1-3G range quite regularly. Since they are uploading files onto their own servers, and they are IP whitelisted servers, the exchange is quite normal and merely a way to allow a client to use their equipment the way they want to us...
How to convert wstring into string?
... on this for é, which I will soon fix)
And note that code points in the range 0x80 - 0x9F in Win1252 will not work. This includes €, œ, ž, Ÿ, ...
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