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SQLAlchemy: print the actual query
I'd really like to be able to print out valid SQL for my application, including values, rather than bind parameters, but it's not obvious how to do this in SQLAlchemy (by design, I'm fairly sure).
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How to make a Python script run like a service or daemon in Linux
...Linux. Would I also need a loop that never ends in the program, or can it be done by just having the code re executed multiple times?
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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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