Determine if a value range expression is a simple range expression.

Source: R/valueRangeExpression.R

vreIsSingleValue is a utility function that returns `TRUE` if the specified value range expression is a simple range expression of the form "value1<=v<value2", where the logical comparisons can be < or <= only and the values must be numbers.

vreIsSimpleNumericRange(vre)

Arguments

vre

The value range expression to examine.

Value

`TRUE` if vre is a simple range expression, `FALSE` otherwise.