Update expressions doc to clarify what's observed

[arthurevans]

We observe only the top-level identifier, not its properties.

For example, in: {{ { thing1: foo, thing2: bar } }} we observe foo and bar but not the properties of foo and bar.

This may lead to unexpected behavior when using a filter like tokenList, which acts on the object's (unobserved) properties.

• Also we need to add array access to the list of allowable syntax in expression.

For example: thing[field]. In this case, we observe... (fill in the blank).

[ebidel]

Do we mention paths are observable if you explicitly watch them in the
observe block?
On Apr 29, 2014 2:26 PM, "Arthur Evans" notifications@github.com wrote:

We observe only the top-level identifier, not its properties.

For example, in: {{ { thing1: foo, thing2: bar } }} we observe foo and barbut not the properties of
foo and bar.

This may lead to unexpected behavior when using a filter like tokenList,
which acts on the object's (unobserved) properties.

Also we need to add array access to the list of allowable syntax in
expression.

For example: thing[field]. In this case, we observe... (fill in the
blank).

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/392
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[arthurevans]

Should have closed this when #431 was merged.