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What are the differences between NP, NP-Complete and NP-Hard?
...ou have a correct, efficient way to solve a decision problem, just writing down the steps in the solution is proof enough.
Algorithms research continues, and new clever algorithms are created all the time. A problem you might not know how to solve efficiently today may turn out to have an efficien...
Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then
... fix. This is how I got it alive.
Head over to Account Security Settings (https://www.google.com/settings/security/lesssecureapps) and enable "Access for less secure apps", this allows you to use the google smtp for clients other than the official ones.
Update
Google has been so kind as to list a...
Linux: compute a single hash for a given folder & contents?
...tar solution. That is the fastest, but drop the v. verbosity only slows it down.
– Bruno Bronosky
Feb 5 '13 at 20:47
7
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How to pull request a wiki page on GitHub?
...
We have found the best solution for the problem so far in https://devonfw.com :
Put your documentation into the git repository together with the code inside a documentation folder.
Extend your travis-ci build with some magic that stages all changes from that documentation folder ...
How do I send a POST request as a JSON?
...on/json')
response = urllib2.urlopen(req, json.dumps(data))
Python 3.x
https://stackoverflow.com/a/26876308/496445
If you don't specify the header, it will be the default application/x-www-form-urlencoded type.
share
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“did you run git update-server-info” error on a Github repository
...
This error mostly caused by WRONG URL, please check:
http or https
URL Name
username@git_url
wrong git name
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[url]https://www.digitalocean.com/community/tutorials/how-to-style-a-t...
https://www.digitalocean.com/com ... le-a-table-with-css
表格样式借鉴到主页。
Rails: What's a good way to validate links (URLs)?
... make it more restrictive. For instance, if you want the URL to be an HTTP/HTTPS URL, then you can make the validation more accurate.
require 'uri'
def valid_url?(url)
uri = URI.parse(url)
uri.is_a?(URI::HTTP) && !uri.host.nil?
rescue URI::InvalidURIError
false
end
Of course, there a...
How can I get the Google cache age of any URL or web page? [closed]
...
Use the URL
https://webcache.googleusercontent.com/search?q=cache:<your url without "http://">
Example:
https://webcache.googleusercontent.com/search?q=cache:stackoverflow.com
It contains a header like this:
This is Goo...
