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Android layout replacing a view with another view on run time
I have a xml -layout file main with two textviews A/B and a view C.
I have two other xml -layout files option1 and option2 .
Is it possible to load either option1 or option2 in run time via Java into C? If so, what function do I have to use?
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Check if a variable is a string in JavaScript
How can I determine whether a variable is a string or something else in JavaScript?
25 Answers
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How to find out element position in slice?
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Sorry, there's no generic library function to do this. Go doesn't have a straight forward way of writing a function that can operate on any slice.
Your function works, although it would be a little better if you wrote it using range.
If you happen to ...
WPF Button with Image
I'm trying to attach an image on a button in WPF, however this code fails. Seems strange after similar code would work perfectly in Mozilla XUL.
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Linux find file names with given string
I'm on Ubuntu, and I'd like to find all files in the current directory and subdirectories whose name contains the string "John". I know that grep can match the content in the files, but I have no idea how to use it with file names. Any help would be appreciated.
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How to store a git config as part of the repository?
I'm using filters to mangle files during checkout like described here .
Now the problem is that filter definition is only stored in my local configuration file:
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Remove duplicated rows using dplyr
...plyr now contains the distinct function for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then only keep the first row:
df %>% g...
How to pass macro definition from “make” command line arguments (-D) to C source code?
... to a "makefile" using the option :
-Dname=value. The definition is accessible inside the makefile.
6 Answers
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What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to latest stable node and npm , I tried npm install moment --save . It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix.
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What's the difference between JPA and Hibernate? [closed]
I understand that JPA 2 is a specification and Hibernate is a tool for ORM. Also, I understand that Hibernate has more features than JPA 2. But from a practical point of view, what really is the difference?
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