pkgmaker 0.16

Finding Differences Between Strings

Usage

str_diff(x, y)

Arguments

x
a single string
y
a single string

Value

an integer vector containing the index of all mis-matched characters in the first string.

Description

Computes which characters differ between two strings.

Examples

# strings to compare
x <- "once upon a time"

y <- "once upon a time there was"

z <- "once upon two times"

# diff: x - y
d <- str_diff(x, y)

d



once upon a time 
................---------- 
once upon a time there was 

str(d)



Class 'str_diff'  atomic (0) 
  ..- attr(*, "str")=List of 2
  .. ..$ x: chr "once upon a time"
  .. ..$ y: chr "once upon a time there was"

# other comparisons
str_diff(y, x)



once upon a time there was 
................++++++++++ 
once upon a time 

str_diff(x, x)



once upon a time 
................ 
once upon a time 

str_diff(x, z)



once upon a time 
..........******--- 
once upon two times 

str_diff(y, z)



once upon a time there was 
..........*********+++++++ 
once upon two times