Array length function for conditions

[retgits]

I'm submitting a ... (check one with "x")

[] bug report => search github for a similar issue or PR before submitting
[X] feature request
[] support request
[] general question

Current behavior (how does the issue manifest): I'd like to be able to create conditions on a branch using the length of an array as part of the condition (like len(array) < 3)

Expected behavior: len(array) < 3 would resolve to true if the array contains less than 3 items

What is the motivation / use case for changing the behavior? I'm building CLI apps using Flogo and this gives me the opportunity to check the number of items passed to the flow

Please tell us about your environment (Operating system, docker version, browser & web ui version, etc): Windows 10, Flogo Web UI 0.5.4

Flogo version (CLI & contrib/lib. If unknown, leave empty or state unknown):

λ flogo version
flogo cli version [v0.5.4]
Your project uses github.com/TIBCOSoftware/flogo-contrib version v0.5.4
Your project uses github.com/TIBCOSoftware/flogo-lib branch issue-281 and revision 9a3a1b6f8de1d1f87c8ce6f693cf8e591f8629c5
Your project uses github.com/retgits/flogo-components branch master and revision f4aaca1b810a517fd15bfde85e0d6a0779771069

[retgits]

I've created a PR for it 😀 TIBCOSoftware/flogo-lib#185

[retgits]

Closing as the PR is merged so it is now supported