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Good reasons NOT to use a relational database?
... ability to validate the structure.
Spreadsheet / CSV file
Very easy model for business users to understand
Subversion (or similar disk based version control system)
Very good support for versioning of data
Berkeley DB (Basically, a disk based hashtable)
Very simple conceptually (j...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...(see PR 10962 and commit 15c487fe) you can use the new useCurrent() column modifier method to set the CURRENT_TIMESTAMP as a default value for a column:
$table->timestamp('created_at')->useCurrent();
Back to the question, on MySQL you could also use the ON UPDATE clause through DB::raw():
...
How do I get user IP address in django?
... ip
Make sure you have reverse proxy (if any) configured correctly (e.g. mod_rpaf installed for Apache).
Note: the above uses the first item in X-Forwarded-For, but you might want to use the last item (e.g., in the case of Heroku: Get client's real IP address on Heroku)
And then just pass the re...
Why does HTML think “chucknorris” is a color?
...are not skipped, they are treated as 0.
– treat your mods well
Sep 28 '12 at 3:30
5
(WHile this a...
Why is jquery's .ajax() method not sending my session cookie?
...hanks! I needed to add these in public root .htaccess of my website: <IfModule mod_headers.c> Header set Access-Control-Allow-Origin "localhost" Header set Access-Control-Allow-Credentials "true" </IfModule>
– Vinay Vissh
Jun 4 '17 at 19:10
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PHP - how to best determine if the current invocation is from CLI or web server?
...rom the command line (CLI) or from the web server (in my case, Apache with mod_php).
18 Answers
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ETag vs Header Expires
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Etag and Last-modified headers are validators.
They help the browser and/or the cache (reverse proxy) to understand if a file/page, has changed, even if it preserves the same name.
Expires and Cache-control are giving refresh information...
Getting the name of a variable as a string
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The only objects in Python that have canonical names are modules, functions, and classes, and of course there is no guarantee that this canonical name has any meaning in any namespace after the function or class has been defined or the module imported. These names can also be modif...
How can I calculate an md5 checksum of a directory?
... no compression just a read. It is unique because the content contains the mod time and size of file ;)
– Sid
Oct 3 '12 at 1:14
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Oracle Differences between NVL and Coalesce
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COALESCE is more modern function that is a part of ANSI-92 standard.
NVL is Oracle specific, it was introduced in 80's before there were any standards.
In case of two values, they are synonyms.
However, they are implemented differently.
N...