rprintf | Adaptive builder for formatted strings | Code Quality library
kandi X-RAY | rprintf Summary
kandi X-RAY | rprintf Summary
rprintf is an adaptive builder for formatted strings. Currently it provides a set of tools for building formatted strings under various replacement rules:. The primary goal of this package is to make it easier to produce formatted strings in all popular styles.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of rprintf
rprintf Key Features
rprintf Examples and Code Snippets
Lines of Code : 10License : Non-SPDX (NOASSERTION)
Copyrprintf("Hello, {1}", "world")
[1] "Hello, world"
rprintf("{1} ({2} years old)","Ken",24)
[1] "Ken (24 years old)"
rprintf("He is {1} but has a height of {2:.2f}cm",18,190)
[1] "He is 18 but has a height of 190.00cm"
rprintf("{1}, {2:.1f}, {3:+ rprintf("Hello, $name", name="world")
[1] "Hello, world"
rprintf("$name ($age years old)",name="Ken",age=24)
[1] "Ken (24 years old)"
rprintf("He is $age but has a height of $height:.2fcm",age=18,height=190)
[1] "He is 18 but has a height of 190 library(rprintf)
rprintf("Hello, %s", "world")
[1] "Hello, world"
rprintf("%s (%d years old)", "Ken", 24)
[1] "Ken (24 years old)"
rprintf("He is %d but has a height of %.1fcm", 18, 190)
[1] "He is 18 but has a height of 190.0cm"
Community Discussions
Trending Discussions on rprintf
QUESTION
I want to write an R function using R's C interface that takes a 2-column matrix of increasing, non-overlapping integer intervals and returns a list with those intervals plus some added intervals, such that there are no gaps. For example, it should take the matrix rbind(c(5L, 6L), c(7L, 10L), c(20L, 30L)) and return list(c(5L, 6L), c(7L, 10L), c(11L, 19L), c(20L, 30L)). Because the output is of variable length, I use a pairlist (because it is growable) and then I call Rf_PairToVectorList() at the end to make it into a regular list.
I'm getting a strange garbage collection error. My PROTECTed pairlist prlst gets garbage collected away and causes a memory leak error when I try to access it.
Here's my code.
...ANSWER
Answered 2020-Sep-10 at 03:57This one is really complicated. You made a great effort to create a reproducible example of this hard to track error.
I tried fixing your problem, unfortunately I failed. But nevertheless I'll try to share my findings with you, since nobody else answered so far (maybe it helps)
I installed your testpkg and additionally added the fullocate function to the namespace. To have it as an exported function.
This way I was able to build the package and run the function with testpkg::fullocate(int_mat) and to run it via devtools::check().
Interestingly if I run it via check() it fails everytime, when running your testthat test.
Running ‘testthat.R’:
QUESTION
I'm trying to make Rinside work with some CUDA code. The first time I tried to compile them directly with NVCC but it was impossible to handle Rinside with nvcc, so now I'm trying another way.
I compile Rinside code with g++ and obtain the object files (.o) then compile some CUDA code with nvcc and obtain the other .o, then link them together but I get some "unreference error".
This is the RINSIDE CODE:
...ANSWER
Answered 2018-Jul-23 at 13:21As @talonmies suggested you can resolve the "unreference error" just adding the CUDA object file and library while compiling it with g++, to be exactly I taked a fresh makefile located in the example folder of RInside and then I added to LDLIBS the path of the .o and the .so I just obtained from the previous compilation I made and everything worked, I don't know If it work properly but, at least we have an executable! To be exactly this is the new makefile:
QUESTION
So in the following code I am using std::thread() to report program progress, the example has been altered to report at an unreasonable interval with an uninformative message in order to demonstrate the issue.
ANSWER
Answered 2018-Apr-30 at 09:11Concerning your first example Writing R Extensions has to say:
Calling any of the R API from threaded code is ‘for experts only’: they will need to read the source code to determine if it is thread-safe. In particular, code which makes use of the stack-checking mechanism must not be called from threaded code.
I would stay away from calling R API functions in threaded code. I am not sure about you second example, but would look for existing solutions first, e.g. http://gallery.rcpp.org/articles/using-rcppprogress/.
QUESTION
I'm developing an application in R / Rcpp using RcppArmadillo, and I need to work with a vector of arma::cube objects. The following example works fine.
...ANSWER
Answered 2018-Apr-19 at 16:32Why not use the default vector constructor?
QUESTION
I'm working with R code that has an interface to C via .Call(). The C function outputs to STDOUT via printf(). As a concrete, more simple example, I'll follow http://mazamascience.com/WorkingWithData/?p=1099
Here is our C code with outputs hello world via printf(), helloA1.c:
ANSWER
Answered 2018-Jan-18 at 15:04So, the issue here is printf negates R's built collection mechanisms for output. In particular, there is no C-level 'stdout' file stream and, thus, no output to collect in either Rgui or RStudio. For details, please see Section 6.5 Printing
of Writing R Extensions
Two possible solutions:
- Define a macro that sets
printfto direct intoRprintfand include the#define STRICT_R_HEADERSto avoid errors. - Switch instances of
printftoRprintfin the offending code.
From here, the capture can be passed off to either capture.output(), which directly assigns output to a variable, or sink(), which redirects output to a file whose contents must then be read back in using readLines(). The latter makes it possible to have a clear enclose over multiple lines of code to capture output while the prior is focused on securing output present from an inputted expression.
For the first iteration, just define a header that includes the custom define and then include the third party library, e.g.
my_code.h
QUESTION
A very common question on StackOverflow with regards to C++/R or C/R package integration is regarding the error in dyn.load(), e.g.
ANSWER
Answered 2018-Jan-18 at 11:44How about the following? I'm not sure it covers everything, but it should be close:
QUESTION
I am trying to build an R package with c++ without using Rcpp (I know Rcpp is working wonderfully). I have read a couple of R package tutorials and briefly read the Writing R Extensions. Below example 1) is working but example 2) crashes R. I want to know why this is happening (Is there any prerequisite steps to write functions for R etc...?).
Example 1In .cpp file
ANSWER
Answered 2017-Sep-18 at 04:31The signature of the function is wrong in the second case (void return value), it needs to return an SEXP object. Even if that's just R_NilValue.
I hope you have a good reason for not using Rcpp.
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