plus {quickcode}

Increment vector by value

Description

Increment the content of a vector and re-save as the vector

Usage

plus(., add = 1L)

Arguments

.

vector of number(s)

add

number to add

Details

This function is very useful when writing complex codes involving loops. Apart from the for loop, this can be useful to quickly increment a variable located outside the loop by simply incrementing the variable by 1 or other numbers. Check in the example section for a specific use. Nonetheless, one may also choose to use this function in any other instance, as it's simple purpose is to increase the value of a variable by a number and then re-save the new value to that variable.

Value

a vector incremented by a number

Examples

num1 <- sample(330:400,10)
num1#before increment

# increment num1 by 1
inc(num1)
num1 #after increment

# increment num1 by 5
num1 #before increment
inc(num1, add= 10)
num1 #after increment

#when used in loops

#add and compare directly
rnum = 10
inc(rnum) == 11 #returns TRUE
rnum #the variable was also updated

# use in a for loop
ynum = 1
for( i in c("scientist","dancer","handyman","pharmacist")){
message("This is the item number ")
message(ynum)
message(". For this item, I am a ")
message(i)

#decrement easily at each turn
plus(ynum)
}


#use in a repeat loop
xnum = 1
repeat{ #repeat until xnum is 15
message(xnum)
if(inc(xnum) == 15) break
}