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Convert data.frame column format from character to factor
...sn't work if length(col_names)==1. In that case, df[,col_names] is automatically demoted to a vector instead of a list of length 1, and then lapply tries to operate over each entry rather than the column as a whole. This can be prevented by using df[,col_names,drop=FALSE].
– P ...
Java Persistence / JPA: @Column vs @Basic
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that 'non-lazy', calls EAGER. LOL
– solvator
Feb 21 '14 at 5:16
7
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How to un-escape a backslash-escaped string?
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Basically for Python3 you want print(b"Hello,\nworld!".decode('unicode_escape'))
– ChristopheD
Apr 7 '15 at 8:35
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Golang: How to pad a number with zeros when printing?
... 1 digit)
It is useful to note that the width can also be set programmatically by using * instead of a number and passing the width as an int parameter:
myWidth := 6
fmt.Printf("%0*d", myWidth, 12) // Prints '000012' as before
This might be useful for instance if the largest value you want to p...
CSS Progress Circle [closed]
...oster is lying. This answer uses heavy amounts of Javascript via a library called LESS.
– GetFree
May 30 '16 at 16:04
6
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How to frame two for loops in list comprehension python
...rehension. (Perfectly matches the 79 character limit too (without the list call))
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Android: set view style programmatically
...without extending as the 3 arg constructor is public anyhow developer.android.com/reference/android/widget/…, android.util.AttributeSet, int)
– Dori
Jan 27 '14 at 10:44
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Mock HttpContext.Current in Test Init Method
...er to address HttpContext being difficult to mock. The two classes are basically unrelated (HttpContextWrapper is used as an adapter between them).
Fortunately, HttpContext itself is fakeable just enough for you do replace the IPrincipal (User) and IIdentity.
The following code runs as expected, e...
How do I check/uncheck all checkboxes with a button using jQuery?
...rop('checked', false) should be used instead, as explained in @richard-garside answer.
– David Torres
Aug 19 '16 at 10:23
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Maintain aspect ratio of div but fill screen width and height in CSS?
...r that has a fixed aspect ratio of approximately 16:9 landscape, like a video.
9 Answers
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