muster | macro based serializers to many different formats | Reflection library
kandi X-RAY | muster Summary
kandi X-RAY | muster Summary
A library for macro based serializers to different formats. It uses scala macros so no reflection is involved and it will generate code at compile time that kind of looks like it would have been handwritten. It is written with the idea of extension, so it's easy to add your own formats. You can find the documentation on the site.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of muster
muster Key Features
muster Examples and Code Snippets
case class Person(id: Long, name: String, age: Int)
val person = Person(1, "Luke", 38)
import muster.codec.jawn._
JsonFormat.from(person)
JsonFormat.into(new File("luke.json")).from(person)
JsonFormat.Pretty.from(person)
import muster.codec.jawn.ap
// Extract a person from a json stream
import muster.codec.jawn._
JsonFormat.as[Person](/* file | string | reader | byte array | input stream | URL */ input)
// Extract a person from a Json4s AST
import muster.codec.json4s._
JValueFormat.as[Person](
libraryDependencies += "org.json4s" %% "muster-codec-jawn" % "0.3.0"
libraryDependencies += "org.json4s" %% "muster-codec-jackson" % "0.3.0"
libraryDependencies += "org.json4s" %% "muster-codec-json4s" % "0.3.0"
libraryDependencies += "org.json4s"
Community Discussions
Trending Discussions on muster
QUESTION
I'm stuck with an error for a week now where I get an error Uncaught (in Promise) TypeError: Cannot read properties of null (reading 'props') at StackManager.tsx:313
. I first ran into the error on mobile devices so Android and iOS devices. The application would run without a problem in the browser on a desktop device. But I then soon discovered that when I opened the developer tools in the Browser (Brave) and the screen size became smaller the error would suddenly appear as well on desktop devices. As soon as I close the developer tool or make the screen size big enough to be considered a desktop device the code would work after a refresh. Weirdly enough on Safari (MacBook Pro) it works even if you simulate an iPhone. On the iPhone if you open the website in Safari it doesn't work unless you simulate Safari (still on the phone) to be a Mac (desktop) then it works again...? So maybe there is a different JS depending on screen size?
My first assumption was that it's related with this
having a different scope. However I don't use this and only use arrow functions (no classes). I also find it very confusing that the error occurs after using a useState()
function (see stacktrace). The closest similar issue I found: Ionic Cannot read properties of null (reading 'removeChild') at StackManager.transitionPage however I don't see how I would have too many rerenders from my code.
App.tsx (where the error originates from)
...ANSWER
Answered 2022-Apr-08 at 09:21turns out the code
QUESTION
I have a vuetify v-data-table, where I would like to colour cells, depending on a condition. Is there a simple way of doing this?
Example:
...ANSWER
Answered 2022-Mar-03 at 18:01You can try using the item
slot which allows you to create a custom row - meaning you'll be able to apply conditional classes.
Check out an example here where I use Vuetify's example data-set: https://codepen.io/ianteoyy-the-flexboxer/pen/JjOxjMQ
QUESTION
Issue description: Brownie tests containing either
...ANSWER
Answered 2022-Feb-19 at 19:52This is fixed in Brownie v1.18.1. However, you will need to install Python 3.9.10 in order to get the latest brownie. For this to work in a virtual environment you can't use venv. Here is a process that works for me:
- install virtualenv on your standard Python version
- download python 3.9.10 and install it without "add to path" into a dedicated directory e.g. $home/pythonversions
- in your project directory create a virtual environment like so
python -m virtualenv -p=""
start your virtual environment e.g. home>..venv\Scripts\activate.ps1
test if your python version is the desired one with python --version
Now install Cython to avoid another error.
Install nodeenv in order to install ganage
Activate with
nodeenv -p
(for this step you will need PowerShell with admin rights)Install ganache with npm
Install eth-brownie with pip check if you got the latest version with
brownie --version
QUESTION
I am getting ready to submit an R package to CRAN and I am working through one final note from R CMD check. The note is that I have a reference to stdout. The "Writing R Extensions" manual has this to say about the problem:
Compiled code should not write to stdout or stderr and C++ and Fortran I/O should not be used. As with the previous item such calls may come from external software and may never be called, but package authors are often mistaken about that.
In all of my code I have made sure to call Rprintf or REprintf when I need to write something, but I have one more place where I can't make this switch: generated code from Flex.
I use GNU Flex/Bison to parse a DSL and Flex has its own pointers and references it uses for things like writing to stdout. Specifically, it has what it calls yyout
which I can overwrite with the yyout_set
function. Great! But what do I set it to?
The problem I have is that I can't change the (generated) C code to call REprintf, but I can't figure out if R exports a FILE *
I can use to overwrite yyout
. I tried digging around the R source code but I couldn't figure out where to look.
Is there a FILE *
that I can use to write to the R console? If not, is there a sometimes acceptable solution? I haven't ever submitted a package to CRAN, but my impression is that this will not pass muster.
ANSWER
Answered 2021-Nov-16 at 15:40I have a two part solution to this problem that seems to do the trick. Please note, I am using re-entrant options for Flex/Bison, so this might not work exactly the same for everyone.
I defineECHO
to use Rprintf
in the preamble of my lexer code.
I actually already had code to define YY_FATAL_ERROR
so I added the ECHO code to that. I added the following code to the preamble of my .l
file:
QUESTION
I try to make my resume in latex. Today I tried the whole day to place a picture beside my name and address, but I don't get it working.
This is the latex code I have so far:
...ANSWER
Answered 2021-Oct-30 at 17:49The one purpose of floating environments like figure
is that latex will select a good place for it. If you need something at a specific position, don't use a float.
Instead you could for example use minipages to include the image in your title:
QUESTION
I want to group by two columns, however MS Access won't let me do it.
Here is the code I wrote:
...ANSWER
Answered 2021-Jun-30 at 16:34If you use an aggregation function in the select
clause, you must group by
every column that you're select
ing that's not an aggregation. If you don't want to do that for some reason (perhaps it changes the output of the aggregation in way that you don't intend) you either must think of an aggregate to use (pick a value. Average? Max? Min?) or just do two selects, one for the aggregate, and one for the non-aggregates. But, then, you have to decide how to get the non-aggregated fields that make sense for the aggregate (or show them all in a table, I suppose?)
QUESTION
I would like to return an array of dates where each date is a 15 minute interval between a startDate and an endDate
i.e : startDate time is 2pm
and endDate time is 3pm
, desired result would be an array containing the following dates [2:15pm, 2:30pm, 2:45pm]
in Date format.
I mustered up some skeleton code but have not yet been able to achieve my desired result.
...ANSWER
Answered 2021-Jun-07 at 20:07Use the Calendar function date(byAdding:value:to:wrappingComponents:)
QUESTION
I used to have a simple row and column format in table and was reading it by pandassql .
but if you have structure like below and want to get age>10 from this , how do I get it using pandassql?
...ANSWER
Answered 2021-May-27 at 22:55This is answered here:
You can use json_normalize
There is also a full description of the dame issue here:
https://medium.com/swlh/converting-nested-json-structures-to-pandas-dataframes-e8106c59976e
QUESTION
I'm aware that this has been an issue many times. However, I don't succeed in converting my xml properly.
This is a data extract of my data. There are several thousand more cases.
...ANSWER
Answered 2021-May-14 at 16:32Here is a solution using the xml2 package. The strategy is to find the reported persons nodes and the parse out all of the subnodes. There are few duplicated node names and I attempted to reduce the number of conflicts, see the comments for more details. You may have to use the node's paths as the dataframe' column names.
QUESTION
I have to add a key and a value to a list which is read from a csv-file into a variable.
To explain it a bit better. First I load a list from a csv-file:
...ANSWER
Answered 2021-May-07 at 11:23You are actually getting a list of dictionaries from the read_csv
module. The content of "list"
is a list, but the elements in this list are dictionaries.
What you want to do is to add a key-value-pair to each dictionary.
Here is an example generating random passwords. See the password-lookup documentation on details how it generates passwords:
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