62dabf9a11
The /samples/ top-level tree is replaced with sibling files in each
knowledge-layer folder. An article and its demonstrations now live
side-by-side:
microsoft/knowledge/<domain>/<slug>.md
microsoft/knowledge/<domain>/<slug>.good.al
microsoft/knowledge/<domain>/<slug>.bad.al
Rationale:
- Proximity. An article and its paired samples are one unit; the
filesystem now reflects that.
- Layer ownership. Samples inherit layer precedence for free -- a
/custom/ fork can override an article and its samples atomically,
which the shared /samples/ tree previously made awkward.
- Trivial migration path. Action-skill source globs
(*/knowledge/<domain>/**/*.md) are unchanged; sample discovery is a
sibling-filename lookup.
Changes:
- git mv of all 65 sample files from samples/<domain>/<slug>/{bad,good}.al
to microsoft/knowledge/<domain>/<slug>.{bad,good}.al (history preserved).
- Update See-sample references in all 37 articles that ship samples.
- skills/read.md: replace the no-code-blocks bullet with a pointer to a
new Sample files section that fully specifies the sibling convention,
the kinds (good/bad + forward-compatible), multi-technology rules,
demonstration-only status, and layer-precedence behaviour.
- skills/write.md: update the samples pointer to match.
- README.md: annotate the knowledge tree with the sample sibling shape.
- samples/README.md deleted; content lifted into skills/read.md.
- Both generators (C:\temp\gen_performance_knowledge.py,
C:\temp\gen_security_knowledge.py) updated to emit at the new paths
and to stop writing samples/README.md. Re-running them is idempotent
against the committed layout.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
1.1 KiB
| bc-version | domain | keywords | technologies | countries | application-area | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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performance |
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Use IsEmpty for existence checks
Seed article. Converted from an existing performance-review prompt to bootstrap the BCQuality performance corpus. Domain stewards should expand, restructure, and refine as needed.
Description
IsEmpty is the cheapest way to answer whether at least one row matches the current filters. It short-circuits at the first match and never hydrates a record. Count() scans and counts the entire set; FindFirst fetches a full row just to be discarded.
Best Practice
Use if not Rec.IsEmpty() then ... for existence checks. Reserve Count for cases where the exact number of rows is needed, and FindFirst for cases where you actually want the row's field values.
See sample: use-isempty-for-existence-checks.good.al.
Anti Pattern
if Rec.Count() > 0 iterates the whole set just to answer a yes/no question. if Rec.FindFirst() then loads an entire row of data the caller never reads.
See sample: use-isempty-for-existence-checks.bad.al.