trait Snapshots
Trait that provides a snap
method that takes one or more arguments and results in a
SnapshotSeq
, whose toString
lists the names
and values of each argument.
The intended use case of this trait is to help you write debug and log messages that give a "snapshot" of program state. Here's an example:
scala> import Snapshots._ import Snapshots._ scala> snap(a, b, c, d, e, f) res3: org.scalactic.SnapshotSeq = a was 1, b was 2, c was 3, d was 4, e was null, f was null
SnapshotSeq
offers a lines
method that places each variable name/value pair on its own line:
scala> snap(a, b, c, d, e, f).lines res4: String = a was 1 b was 2 c was 3 d was 4 e was null f was null
Or, because a SnapshotSeq
is a IndexedSeq[Snapshot]
, you can process it just like any other Seq
, for example:
scala> snap(a, b, c, d, e, f).mkString("Wow! ", ", and ", ". That's so awesome!") res6: String = Wow! a was 1, and b was 2, and c was 3, and d was 4, and e was null, and f was null. That's so awesome!
- Companion:
- object
- Source:
- Snapshots.scala
Value members
Concrete methods
Snap the given expressions.
Snap the given expressions.
- Value parameters:
- expressions
expressions to be snapped
- Returns:
an
IndexedSeq
ofSnapshot
for the given expressions.- Source:
- Snapshots.scala