concat | Mediachain peer-to-peer network | Networking library
kandi X-RAY | concat Summary
kandi X-RAY | concat Summary
concat is a set of daemons that provide the backbone of the Mediachain peer-to-peer network. Please see RFC 4, concat.md and the Mediachain 1.0 developer update for a high level overview of this design. The two main programs in concat are mcnode, which is the implementation of a fully featured Mediachain node, and mcdir, which implements a directory server for facilitating node discovery and connectivity. For system-wide Mediachain documentation see
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Top functions reviewed by kandi - BETA
- Basic library .
- makeCriteriaFilterF converts a queryCriteria to StatementFilter .
- lookupBlockstack returns the public key associated with the given user .
- CompileQuery returns a string representation of a query .
- doSign is responsible for signing a file
- makeResultSet returns a new ResultSet .
- encryptPrivateId encrypts data and encrypts a private key
- _StatementBody_one unmarshals a StatementBody .
- generateIdentity generates an identity key pair
- _SimpleValue_OneofUnmarshaler unmarshals a SimpleValue .
concat Key Features
concat Examples and Code Snippets
Lines of Code : 78License : Permissive (MIT)
Copy$ mcclient query -r QmeiY2eHMwK92Zt6X4kUUC3MsjMmVb2VnGZ17DhnhRPCEQ "SELECT namespace FROM *"
'images.500px'
'images.dpla'
'images.pexels'
$ mcclient query -r QmeiY2eHMwK92Zt6X4kUUC3MsjMmVb2VnGZ17DhnhRPCEQ "SELECT COUNT(*) FROM images.dpla"
3738109
$ cat /tmp/hello.json
{"id": "hello_1", "hello": "world"}
{"id": "hello_2", "hola": "mundo"}
$ mcclient publish --idSelector 'id' scratch.hello /tmp/hello.json
statement id: 4XTTMADSKQUN3jkeZngbtuE35w9y5YnDTicVTeeji7N2Npkey:1477063161:0 -- body: QmZ $ mcnode
2016/10/20 19:29:24 Generating new node identity
2016/10/20 19:29:25 Saving key to /home/vyzo/.mediachain/mcnode/identity.node
2016/10/20 19:29:25 Node ID: QmeBkfxcaBfA9pvzivRwhF2PM7sXpp4HHQbp7jfTkRCWEa
2016/10/20 19:29:25 Generating new pub Community Discussions
Trending Discussions on concat
QUESTION
Let's say I have the following table:
...ANSWER
Answered 2021-Jun-16 at 00:51Standard SQL offers listagg() to aggregate strings. So this looks something like:
QUESTION
First time actually using anything to do with swing - sorry for the poor code and crude visuals!
Using swing for a massively over-complicated password checker school project, and when I came to loading in a JMenuBar, it doesn't render properly the first time. Once I run through one of the options first, it reloads correctly, but the first time it comes out like this:
First render attempt
But after I run one of the methods, either by clicking one of the buttons that I added to check if it was just the JFrame that was broken or using one of the broken menu options, it reloads correctly, but has a little grey bar above where the JMenuBar actually renders: Post-method render
The code for the visuals is as follows:
...ANSWER
Answered 2021-Jun-15 at 18:29You should separate creating your menu from your content. Please review the following example. I decoupled your menu, component, and event logic into meaningful phases.
QUESTION
I am trying to parse many XML test results files and get the necessary data like testcase name, test result, failure message etc to an excel format. I decided to go with Python.
My XML file is a huge file and the format is as follows. The cases which failed has a message, & and the passed ones only has . My requirement is to create an excel with testcasename, test status(pass/fail), test failure message.
...ANSWER
Answered 2021-Jun-15 at 17:46Since your XML is relatively flat, consider a list/dictionary comprehension to retrieve all child elements and attrib dictionary. From there, call pd.concat once outside the loop. Below runs a dictionary merge (Python 3.5+).
QUESTION
I am trying something very simple in Vue and can't get it to work.. I want my API url to update with 2 new values (valueFrom and valueTwo). I am using fetch for this.
When I console log the values, they work (2021-06-17 etc). But as soon as I put them in the url, it just comes up empty.
Here are my input fields:
...ANSWER
Answered 2021-Jun-15 at 10:34You can try using the backticks/backquotes (``) in place of the apostrophes. So your url will end up as below:
QUESTION
I have the following array of arrays:
...ANSWER
Answered 2021-Jun-15 at 09:47You could reduce the array by mapping the inner arrays.
QUESTION
I have a Set of objects that consists of name and value. My requirement is to create a new Set by grouping the Set based on objects that have the same value and concate the property name into a single string separated by ",".
Example:
...ANSWER
Answered 2021-May-04 at 07:51You can do something like this:
QUESTION
Good day everyone, I am currently struggling with writing mysql query which should make chat group from messages. App which I am making is taking data from other service, so it's not up to me to also manage chat groups, I need take this info from messages themselves.
My table of messages looks like this:
id sendAddr receiveAddr lastMessage text read 1 Ccbbd6uUZF2GD5wE5LEfjGPA3YWPjoLC6P CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF 2021-06-02 12:57:39 test3 0 5 Ccbbd6uUZF2GD5wE5LEfjGPA3YWPjoLC6P CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF 2021-06-02 13:00:44 test3 0 7 CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF Ccbbd6uUZF2GD5wE5LEfjGPA3YWPjoLC6P 2021-06-10 23:13:59 testVPS 0 8 CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF CYfMNQ62u1qwhCBqXzcmeJ8D9j4Yc1Pwef 2021-06-10 20:03:59 neco 0 9 CYfMNQ62u1qwhCBqXzcmeJ8D9j4Yc1Pwef CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF 2021-06-10 21:03:59 test 0My only input data which I sent from my mobile app is receiveAddr so I need to add this to group anything which containes address in either sentAddr or receiveAddr, here is representation of what I want to achieve
It needs to have latest text counted amount of 0 in read column and lastMessage which is time of last message
I came up with something which sort of works if the user of the mobile app would be just receiving messages, which would be this:
SELECT sentAddr, COUNT(IF(campus.messages.read = 0, 1, NULL)) as unread, max(receiveTime) as lastMessage, max(text) as text FROM campus.messages WHERE (SELECT max(receiveTime) FROM campus.messages) AND receiveAddr = 'CMKovgETx2oYxhoYKAeSakmipBjbmQ9ZHF' GROUP BY sentAddr, receiveAddr
But sadly that does not get me a text from the latest message and not even taking into account that if the same user send some message, it shows as different group, which is not really helpful. I also came up with something which groups sendAddr and receiveAddr into one group no matter if it's on sending or receiving side:
GROUP BY CONCAT(LEAST(receiveAddr,sentAddr),' ', GREATEST(receiveAddr, sentAddr))
However in that case I can't with this added to upper query, it does not retrieve latest text, which is useless. So is there any chance of doing this with one query, no matter how long and convoluted it would be? And just to remind, only input data is user's address, which can be either sending or receiving address from the table. So is there any solution to this?
Version of the mysql database is 8.0.25
ANSWER
Answered 2021-Jun-15 at 07:54I figured it out, here it is:
QUESTION
I'm reading the official Django documentation, but I can't find an answer to my question.
Right now I have this query implemented, working with a custom MariaDB connector for Django:
...ANSWER
Answered 2021-Jun-15 at 02:24Your first query should be fine just adjusted to match the format that Django expects.
First, replace ? with %s to pass parameters to the query
Second, replace % with %% as a single percent is an "escape" character and you need to escape the escape char
Here's your original query truncated to show an example of how it could work
QUESTION
I want to merge/combine all group names that a user is a member of into a list of group names for each user record.
For example, lets say I have the following users in my database:
...ANSWER
Answered 2021-Mar-30 at 17:45you don't need to group by ag.name since it would be the aggregation for the group :
QUESTION
I'm trying to find fractions not preceded by a word followed by a /, for example, s2. My code doesn't work for that one but it's able to capture for other ones. Can you please help modify the regex expression? The expected is given followed by _f.
...ANSWER
Answered 2021-Jun-14 at 21:16We could match either a regex lookaround to match the lower case letters ((?<=[a-z])) followed by either one or more space, comma ([, ]+) followed by any / and digits (\\d+) and other characters (.*) or (|) one or more digits and other characters and replace with blank ("")
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Install concat
You can run your local mediachain node by invoking mcnode without arguments:. The first time you run mcnode, it will generate a pair of persistent identities and initialize the local store. By default, mcnode uses ~/.mediachain/mcnode as its root directory, but you can change this using the -d path/to/mcnode/home command line option. mcnode is intended to be run as a daemon, so you can run it in a docker container, use daemon to daemonize, or simply run it inside a screen.
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