cmd/bosun: series func to create series from scalars

[kylebrandt]

Also fix nv() so it creates a result when the entire set is empty

$now = epoch()
$hourAgo =  $now-d("1h")
$s = merge(series("foo=bar", $hourAgo, 5, $now, 10), series("foo=bar2", $hourAgo, 6, $now, 11))

[kylebrandt]

Also fixes #1655

[captncraig]

What does VArgsOmit do?

[kylebrandt]

@captncraig Makes it so the vargs are optional. You are allowed to omit them.

[captncraig]

How about inverting it. Maybe VArgsRequired or even MinVArgs would be clearer.

[kylebrandt]

Most of the time it isn't true. So when defining funcs you don't have to
include it. So false is a better default

On Mon, Mar 14, 2016 at 1:19 PM, Craig Peterson notifications@github.com
wrote:

In cmd/bosun/expr/parse/parse.go
#1667 (comment):

@@ -31,13 +31,14 @@ type Tree struct {
}

type Func struct {

• Args []models.FuncType
• Return models.FuncType
• Tags func([]Node) (Tags, error)
• F interface{}
• VArgs bool
• VArgsPos int
• Check func(*Tree, *FuncNode) error
• Args []models.FuncType
• Return models.FuncType
• Tags func([]Node) (Tags, error)
• F interface{}
• VArgs bool
• VArgsPos int
• VArgsOmit bool

How about inverting it. Maybe VArgsRequired or even MinVArgs would be
clearer.

—
Reply to this email directly or view it on GitHub
https://github.com/bosun-monitor/bosun/pull/1667/files#r56038601.