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Shipping with a review that names the reach

An extension ships when the reach is read. The reach is the list of hosts, and the list is why a review is a decision about names.

What you will see

refuse names new host. One name is fixable.

About 1 min of reading

Try It

Print a reach and compare

1

Print the reach

printf 'example.com\nshop.example.com\n' > /tmp/r.txt; wc -l < /tmp/r.txt

Before you run it, say out loud what it will print. Then open the answer.

What it prints
2. Two names printed is the reach.
2

Write the version

printf 'version 3 reach 2\n' > /tmp/v.txt; cat /tmp/v.txt

Before you run it, say out loud what it will print. Then open the answer.

What it prints
One line with a version. A version is comparable.
3

Refuse a grown reach

printf 'now 3 last 2\n' | awk '{print ($1>$3) ? "refuse names new host" : "ok"}'

Before you run it, say out loud what it will print. Then open the answer.

What it prints
refuse names new host. One name is fixable.

Data Flow

A manifest to a review
1 The reach is printed at ship
↓
2 The version is written with it
↓
3 The list is compared to the last review
↓
4 A grown reach refuses with the host
Why this works
Why the reach is printed every time

A reach that is remembered is a reach that changed silently. Printed every time is why a change is a finding.

The one thing a review never accepts

A star. A star is a reach that is not a list, and a list is what a review reads.

Examples

The reach is printed at ship

Printed, not summarised. Printed is what makes the review about the list rather than about a word.

The version is in the review

The version of the manifest. A version in the review is a review that can be compared to a later one.

A reach that grew is refused

The refusal names the host that grew. One name is what makes the growth fixable.

Words this lesson uses

Each one is defined here on this site. Open the entry for the full definition and the other words it points at.

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