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When to use symbols instead of strings in Ruby?
...ime you reference the symbol, saving memory. So every time the interpreter reads :my_key it can take it from memory instead of instantiate it again. This is less expensive than initializing a new string every time.
You can get a list all symbols that are already instantiated with the command Symbo...
Empty set literal?
...
@Ninja420 try to read first before comment, i have noticed that
– Reishin
Mar 24 '16 at 6:04
3
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What's the recommended approach to resetting migration history using Django South?
...EDIT - I'm putting a comment below at the top of this as it's important to read it before the > accepted answer that follows @andybak
@Dominique: Your advice regarding manage.py reset south is dangerous
and may destroy the database if there are any third party apps using
south i...
What is Rack middleware?
...task?", i.e. role-based security.
Caching: have I processed this request already, can I return a cached result?
Decoration: how can I enhance the request to make downstream processing better?
Performance & Usage Monitoring: what stats can I get from the request and response?
Execution: actually ...
What is Linux’s native GUI API?
...artz. The GTK+ port is expected to be finished within a year, while Qt 5 already has complete Wayland support.
To further complicate matters, Ubuntu has announced they are developing a new system called Mir because of problems they perceive with Wayland. This window system is also based on the Open...
Container-fluid vs .container
...ve:
.container-fluid has the CSS property width: 100%;, so it continually readjusts at every screen width granularity.
.container-fluid {
width: 100%;
}
.container has something like "width = 800px" (or em, rem etc.), a specific pixel width value at different screen widths. This of course is w...
Enable access control on simple HTTP server
...r doesn’t support the OPTIONS HTTP method. You could add it if you want (read the Python manual about HTTP servers); or you could just not try to access the server like that.
– poke
Jan 22 '15 at 7:04
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Browser statistics on JavaScript disabled [closed]
...norities like disabled people and visually-impaired people to make the web readable and usable for them as for any other user.
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MySQL stored procedure vs function, which would I use when?
...tored function or trigger, it is not permitted to modify a table that is already being used
(for reading or writing) by the statement that invoked the function or trigger.
Good Example: How to Update same table on deletion in MYSQL?
Note: that although some restrictions normally apply to stored f...
What is a Portable Class Library?
...uld be better to summarize those articles and put a brief here. Currently, read by 40,450 people, with average 20 minute (let's assume) to go through the links, means 561 days wasted in total.
– Zafar
Dec 21 '17 at 5:46
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