[android-components](../../index.md) / [mozilla.components.service.glean.histogram](../index.md) / [FunctionalHistogram](index.md) / [sum](./sum.md)

# sum

`var sum: `[`Long`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/service/glean/src/main/java/mozilla/components/service/glean/histogram/FunctionalHistogram.kt#L32)

the accumulated sum of all the samples in the histogram

