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How to listen for changes to a MongoDB collection?
...ry 10, 2018 - Release 3.6
*EDIT: I wrote an article about how to do this https://medium.com/riow/mongodb-data-collection-change-85b63d96ff76
https://docs.mongodb.com/v3.6/changeStreams/
It's new in mongodb 3.6
https://docs.mongodb.com/manual/release-notes/3.6/ 2018/01/10
$ mongod --versio...
How to verify Facebook access token?
...
You can simply request https://graph.facebook.com/me?access_token=xxxxxxxxxxxxxxxxx if you get an error, the token is invalid. If you get a JSON object with an id property then it is valid.
Unfortunately this will only tell you if your token is v...
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...
Limitations of Intel Assembly Syntax Compared to AT&T [closed]
...
It's the "same language", in that it compiles down to the same machine code, has the same opcodes, etc. On the other hand, if you are using GCC at all, you will probably want to learn AT&T syntax, just because it's the default--no changing compiler options, etc. to g...
How do I set up curl to permanently use a proxy? [closed]
...figuration:
export http_proxy http://proxy.server.com:3128
For proxying HTTPS requests, set https_proxy as well.
Curl also allows you to set this in your .curlrc file (_curlrc on Windows), which you might consider more permanent:
http_proxy=http://proxy.server.com:3128
...
How to speed up insertion performance in PostgreSQL
...f total 30MI) rows and then the performance sinks drastically (all the way down to 1min per 100K).
I will not list all of the things that did not work and cut straight to the meat.
I dropped a primary key on the target table (which was a GUID) and my 30MI or rows happily flowed to their destinat...
How to replace plain URLs with links?
...ern1, replacePattern2, replacePattern3;
//URLs starting with http://, https://, or ftp://
replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
replacedText = inputText.replace(replacePattern1, '<a href="$1" target="_blank">$1</a&g...
Why doesn't Java Map extend Collection?
...tantly, does it really add any value? You may find this abstraction breaks down once you start looking at the corner cases.
It's worth noting that the HashSet is actually implemented as a HashMap, not the other way around. This is purely an implementation detail but is interesting nonetheless.
The...
Git push existing repo to a new and different remote repo server?
...
There is a deleted answer on this question that had a useful link: https://help.github.com/articles/duplicating-a-repository
The gist is
0. create the new empty repository (say, on github)
1. make a bare clone of the repository in some temporary location
2. change to the temporary location...
Changed GitHub password, no longer able to push back to the remote
...e or remote URL, you can take a look at the following Git documentation:-
https://help.github.com/articles/setting-your-username-in-git/
https://help.github.com/articles/changing-a-remote-s-url/
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