grapes-is-grapes: Strict identity comparison with diagnostics

In evanverse: Utility Functions for Data Analysis and Visualization

Strict identity comparison with diagnostics

Description

A semantic operator that checks whether two objects are strictly identical, and prints where they differ if not.

Usage

a %is% b

Arguments

a	First object (vector, matrix, or data.frame)
b	Second object (vector, matrix, or data.frame)

Value

TRUE if identical, FALSE otherwise (with diagnostics)

Examples

1:3 %is% 1:3                  # TRUE
1:3 %is% c(1, 2, 3)           # FALSE, type mismatch (integer vs double)
data.frame(x=1) %is% data.frame(y=1)  # FALSE, column name mismatch
m1 <- matrix(1:4, nrow=2)
m2 <- matrix(c(1,99,3,4), nrow=2)
m1 %is% m2                  # FALSE, value differs at [1,2]
c(a=1, b=2) %is% c(b=2, a=1) # FALSE, names differ

evanverse documentation built on March 10, 2026, 5:07 p.m.