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Rails extending ActiveRecord::Base
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Read the ActiveSupport::Concern documentation for more details.
Create a file called active_record_extension.rb in the lib directory.
require 'active_support/concern'
module ActiveRecordExtension
extend ActiveSupport::Concern
# add your instance methods here
def foo
"foo"
end
#...
Referring to a file relative to executing script
...writing, I use source to include the variable defined in a configuration file. The script to be executed is act.sh , while the script to be source d is act.conf.sh , so in act.sh I have:
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How do I include a JavaScript file in another JavaScript file?
...Script similar to @import in CSS that allows you to include a JavaScript file inside another JavaScript file?
61 Answers
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C library function to perform sort
...ndard library exactly, https://github.com/swenson/sort has just two header files you can include to get access to a wide range of incredibly fast sorting routings, like so:
#define SORT_NAME int64
#define SORT_TYPE int64_t
#define SORT_CMP(x, y) ((x) - (y))
#include "sort.h"
/* You now have access...
The Guava library: What are its most useful and/or hidden features? [closed]
...legacy APIs, including third-party libraries like Guava. The configuration file appears to contains 67 Guava deprecations, including StandardCharsets.
– DavidS
Nov 1 '16 at 21:08
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Is there an equivalent of CSS max-width that works in HTML emails?
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@PhyllisSutherland found a fix for images: <img src="file.jpg" "width="350" alt="" style="display:block;width:100%" /> litmus.com/community/discussions/…
– cbron
Oct 3 '17 at 21:47
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Is there a simple way to convert C++ enum to string?
.../>
<Enumeration id="_3" name="MyEnum" context="_1" location="f0:1" file="f0" line="1">
<EnumValue name="FOO" init="0"/>
<EnumValue name="BAR" init="80"/>
</Enumeration>
<File id="f0" name="my_enum.h"/>
</GCC_XML>
You could use any language you p...
How Python web frameworks, WSGI and CGI fit together
...s to use CGI to run a script. Another way to respond is to simply serve a file.
In the case of CGI, Apache prepares an environment and invokes the script through the CGI protocol. This is a standard Unix Fork/Exec situation -- the CGI subprocess inherits an OS environment including the socket a...
SSH Key - Still asking for password and passphrase
...ill be unencrypted on your machine. It's like leaving a password in a text file laying around on your computer.
– user456814
Jul 5 '14 at 17:25
2
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]
...x. Could you please share additional info on how the kernel was tuned? max file descriptors/tcp window sizes etc?
– quixver
Jun 21 '14 at 21:14
15
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