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source of historical stock data [closed]
... to start with a "discount" data feed will do, but as soon as you run more comprehensive backtests you might run into problems depending on what you do. If you just look at, let's say, the S&P 500 stocks this will not be so much a problem though and a "cheap" intraday feed will do.
What you wi...
Deprecated warning for Rails 4 has_many with order
...d include? This: { order(:position), include(:track) } throws error on the comma.
– kakubei
Nov 15 '13 at 10:02
2
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Merge two (or more) lists into one, in C# .NET
...
I've updated the gist (gist.github.com/mcliment/4690433) with the performance test using BenchmarksDotNet and properly tested, AddRange is the best option for raw speed (about 4x and the larger the lists the better the increase), as Jon suggeste.
...
Rails - How to use a Helper Inside a Controller
...yController < ApplicationController
include MyHelper
def xxxx
@comments = []
Comment.find_each do |comment|
@comments << {:id => comment.id, :html => html_format(comment.content)}
end
end
end
Option 2: Or you can declare the helper method as a class function...
Alter MySQL table to add comments on columns
... for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this?
5 Answer...
Docker and securing passwords
...
Definitely it is a concern. Dockerfiles are commonly checked in to repositories and shared with other people. An alternative is to provide any credentials (usernames, passwords, tokens, anything sensitive) as environment variables at runtime. This is possible via the -...
Responsive image map
...
For responsive image maps you will need to use a plugin:
https://github.com/stowball/jQuery-rwdImageMaps (No longer maintained)
Or
https://github.com/davidjbradshaw/imagemap-resizer
No major browsers understand percentage coordinates correctly, and all
interpret percentage coordinates a...
AJAX Mailchimp signup form integration
...hing like this by default:
<form action="http://xxxxx.us#.list-manage1.com/subscribe/post?u=xxxxx&id=xxxx" method="post" ... >
change it to look something like this
<form action="http://xxxxx.us#.list-manage1.com/subscribe/post-json?u=xxxxx&id=xxxx&c=?" method="get" ... >...
How to install a previous exact version of a NPM package?
...ample: npm install express@3.0.0
You can also add the --save flag to that command to add it to your package.json dependencies, or --save --save-exact flags if you want that exact version specified in your package.json dependencies.
The install command is documented here: https://docs.npmjs.com/cli...
How to log cron jobs?
...
Description of what means 2>&1: stackoverflow.com/questions/818255/in-the-bash-shell-what-is-21
– Yamaneko
Sep 26 '12 at 14:26
5
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