3f5b3cdd98
* feat: add configurable SMTP HELO hostname Allow the SMTP HELO/EHLO hostname to be configured separately from the SMTP server hostname. This is useful when the SMTP server requires clients to identify themselves with a fully qualified hostname different from the server address. * chore: remove vendored dependency changes * Bump go-pkgz/notify to v1.4.0 and document SMTP_HELO_HOST The HELOHost field lands in go-pkgz/notify v1.4.0, so the branch needs the bump to compile; v1.3.0 in master has no such field. The example module is tidied alongside, as any change to backend/go.mod requires. Documents the parameter in the parameters table and, separately, in the email setup page: what it does, that leaving it unset keeps the previous `localhost` greeting, and the case it exists for, a relay refusing the greeting under Postfix `reject_non_fqdn_helo_hostname`. Also records the current limit: verification emails for email authentication go through go-pkgz/auth's own sender, which has no equivalent setting, so the greeting there is unchanged. * Bump go-pkgz/auth to v2.2.0 and apply SMTP_HELO_HOST to verification email The verification email sender had no way to set the greeting, so a relay that refuses the HELO would accept notifications and still reject sign-in emails. EmailParams gains HELOHost in go-pkgz/auth v2.2.0, so the same SMTP_HELO_HOST now drives both paths. The example module is tidied alongside, as any change to backend/go.mod requires. --------- Co-authored-by: oli <someone@somewhere.tld> Co-authored-by: Dmitry Verkhoturov <paskal.07@gmail.com>
49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
package stats
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// Diff calculates the successive differences of the input slice,
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// returning input[i] - input[i-1] for each i in 1..len(input)-1.
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// The output has length len(input) - 1; a single-element input
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// returns an empty slice.
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func Diff(input Float64Data) ([]float64, error) {
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if input.Len() == 0 {
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return nil, ErrEmptyInput
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}
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diff := make([]float64, input.Len()-1)
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for i := 1; i < input.Len(); i++ {
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diff[i-1] = input[i] - input[i-1]
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}
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return diff, nil
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}
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// PercentChange calculates the fractional change between successive
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// elements of the input slice, returning
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// (input[i] - input[i-1]) / input[i-1] for each i in 1..len(input)-1.
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// The output has length len(input) - 1; a single-element input
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// returns an empty slice. A zero denominator follows IEEE 754
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// semantics, yielding +Inf, -Inf, or NaN (for 0/0), matching the
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// behavior of pandas pct_change.
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func PercentChange(input Float64Data) ([]float64, error) {
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if input.Len() == 0 {
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return nil, ErrEmptyInput
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}
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change := make([]float64, input.Len()-1)
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for i := 1; i < input.Len(); i++ {
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change[i-1] = (input[i] - input[i-1]) / input[i-1]
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}
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return change, nil
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}
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// Diff returns the successive differences of the data
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func (f Float64Data) Diff() ([]float64, error) { return Diff(f) }
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// PercentChange returns the fractional change between successive elements of the data
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func (f Float64Data) PercentChange() ([]float64, error) { return PercentChange(f) }
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