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Transpose a data frame
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# transpose
t_mtcars <- transpose(mtcars)
# get row and colnames in order
colnames(t_mtcars) <- rownames(mtcars)
rownames(t_mtcars) <- colnames(mtcars)
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How can I wrap or break long text/word in a fixed width span?
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It needs to have a width in order to know where to break
– DFSFOT
Aug 28 '18 at 23:24
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Default parameter for CancellationToken
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Here are several solutions, in descending order of general goodness:
1. Using default(CancellationToken) as default value:
Task DoAsync(CancellationToken ct = default(CancellationToken)) { … }
Semantically, CancellationToken.None would be the ideal candidate fo...
HashMap with multiple values under the same key
...t types associated with a key. You have to take care by maintaining proper order of inserting and retrieving from Object[].
Example:
Consider, we want to store Student information. Key is id, while we would like to store name, address and email associated to the student.
//To make entry int...
Google Maps V3: How to disable “street view”?
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disableDefaultUI: true is not necessary in order to remove only the street view button.
– Eido95
Jun 4 '18 at 13:10
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How to force LINQ Sum() to return 0 while source collection is empty
... doesn't allow you to use "??" operator to set 0 for empty collection.
In order to avoid this situation you need to make LINQ expect "double?". You can do it by casting "(double?)l.Amount".
It doesn't affect the query to SQL but it makes LINQ working for empty collections.
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How to determine whether a Pandas Column contains a particular value
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It would be great if you change order of results from smallest to largest. Nice work!
– smm
Jan 10 at 0:06
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user authentication libraries for node.js?
...sions
What I ended up doing was creating my own middleware function check_auth that I pass as an argument to each route I want authenticated. check_auth merely checks the session and if the user is not logged in, then redirects them to the login page, like so:
function check_auth(req, res, next) ...
Reset CSS display property to default value
...u have to actually append the generated element to the <body> tag in order to get the computed style, at least in Chrome.
– dimplex
Jan 7 '17 at 16:04
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Assert a function/method was not called using Mock
...ome function was not called. Mock docs talk about methods like mock.assert_called_with and mock.assert_called_once_with , but I didn't find anything like mock.assert_not_called or something related to verify mock was NOT called .
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