Simple database: Difference between revisions
Content added Content deleted
(Add emacs lisp) |
mNo edit summary |
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(switch-to-buffer "**content**") |
(switch-to-buffer "**content**") |
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(end-of-buffer) |
(end-of-buffer) |
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( |
(let (row-data) |
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(setq row-data (append (list 'id (dbe-next-id)) (ensure-list row))) |
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(insert (format "%s\n" row-data)) |
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) |
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(message ">> Row added: %s" row-data) ) ) ) |
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) |
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(defun dbe-find-by-id (row-id) |
(defun dbe-find-by-id (row-id) |
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(let (row-found) |
(let (row-found) |
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(dbe-rows (lambda (row) |
(dbe-rows (lambda (row) |
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;;(message " checking row: %s" row) |
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(when (equal (plist-get row 'id) row-id) |
(when (equal (plist-get row 'id) row-id) |
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(setq row-found row)) ) |
(setq row-found row)) ) |
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:continue (lambda () (null row-found))) |
:continue (lambda () (null row-found))) |
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(message " |
(message ">> Row found: %s" row-found) |
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) |
) |
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M-x dbe-insert |
M-x dbe-insert |
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Please enter the row data in plist format: (name "book1" author "author1") |
Please enter the row data in plist format: (name "book1" author "author1") |
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>> Row added: (id 1 name book1 author author1) |
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M-x dbe-insert |
M-x dbe-insert |
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Please enter the row data in plist format: (name "book2" author "author2") |
Please enter the row data in plist format: (name "book2" author "author2") |
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>> Row added: (id 2 name book2 author author2) |
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M-x dbe-find-by-id |
M-x dbe-find-by-id |
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Please enter row id: 2 |
Please enter row id: 2 |
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>> Row found: (id 2 name book2 author author2) |
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</pre> |
</pre> |
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