# Idx

## Description

Evaluates conditional expression involving a single vector and returns a vector of integers containing the row indices of all records that meet the condition.

## Syntax

vector idx(bool vbool)


## Parameters

vbool

a conditional expression on a single vector

## Return

Returns a vector of integers containing the row indices of all records that meet the condition.

## Examples

idx(B==100) // Returns indices of values in B that equal 100
idx(B>=20 && B<=50) // Returns indices of values in B are between 20 and 50
idx(left(A,5)\$ == "Chris") // Returns indices of values in A where first 5 letters are "Chris"