tester provides human readable functions to test characteristics of some common R objects. The main purpose behind tester is to help you validate objects, especially for programming and developing purposes (e.g. creating R packages)
I developed tester to have a set of functions for testing objects in a friendly way, following the so-called literate programming paradigm.
Without tester: If you want to test if a number is positive, you would do something like this:
number = 10
if (number > 0) TRUE else FALSEWith tester: There is nothing wrong with the previous way of doing things. However, I still wanted to be able to type something like this:
# another way
is_positive(number)This is what tester offers you. By having functions like is_positive(), it helps your code to be more understandable. The underlying principle is to have tools that get you closer to the literate programming paradigm. That was my purpose for developing tester
Stable version on CRAN:
install.packages('tester')Development version on github:
library(devtools)
install_github('tester', 'gastonstat')
library(tester)
# positive
is_positive(5)
is_positive(0)
is_positive(-3)
# negative
is_negative(5)
is_negative(0)
is_negative(-3)
# integer
is_integer(pi)
is_integer(1)
is_integer(1L)
is_integer(1.0)
is_integer(1.1)
# compared to 'is.integer'
is.integer(1L)
is.integer(1)
is.integer(as.integer(1))
is.integer(1.0)
is.integer(1.1)