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I read somewhere that there is a way (with some char at the beginning or at the end of the line), which forces an automatic print result of the expression.
I want to automatically print n, i.e. without having to type n after n <- 3
n <- 3
n
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The assignment operator, denoted by the “=” symbol, is the operator that is used to assign values to variables in Python. The line x=1 takes the known value, 1, and assigns that value to the variable with name “x”. After executing this line, this number will be stored into this variable.
Now, you can assign a value to a variable and return that same value using "assignment expressions" (colloquially called "the Walrus operator"). Which will print "Hello, world" and assign the string "world" to the variable "w" all in one line. good job......!
As you might expect, printf can also print the values of variables. Here's an example: printf("The answer is %d\n", answer); The arguments to printf are a ``control'' string followed by the variables whose values you wish to print.
Python variables store values in a program. You can refer to the name of a variable to access its value. The value of a variable can be changed throughout your program. Variables are declared using this syntax: name = value.
If you put the expression in parentheses the result will be printed:
(n <- 3)
##[1] 3
This works because the assignment operator <- returns the value (invisibly, which strangely is not in the documentation). Putting it in parentheses (or in print or c, or show, or cat (without newline)) makes it visible.
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