schemer | Powerful schema-based validation of Python dicts | Validation library
kandi X-RAY | schemer Summary
kandi X-RAY | schemer Summary
Powerful schema-based validation of Python dicts.
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Top functions reviewed by kandi - BETA
- Verify that all fields are valid
- Verify that the default value is valid
- Verify a field specification
- Verify the type of a schema
- Verify a validator
- Verify that all validates are in the spec
- Append field path to field
- Validate that value is a dict
- Validate an instance
- Validate the value
- Validate the given instance
- Applies validation errors to the given value
- Creates a mixed type
schemer Key Features
schemer Examples and Code Snippets
Lines of Code : 43License : Permissive (MIT)
Copyuk_address_schema = Schema({
'recipient': {'type': basestring, 'required': True},
'floor_apartment': {'type': basestring, 'required': False},
'building': {'type': basestring, 'required': False},
'house_numb blog_post_schema = Schema({
"author": {"type": Schema({
"first_name": {"type": basestring},
"last_name": {"type": basestring}})},
"title": {"type": basestring},
"content": {"type": basestring}
})
name_schema = Sche line_item_schema = Schema({
"price": {"type": int, "required": True}
"item_name": {"type": basestring, "required": True}
})
order_schema = Schema({
"line_items": {"type": Array(line_item_schema)}
"total_due": {"type": Community Discussions
Trending Discussions on schemer
QUESTION
I am currently learning miniKanren by The Reasoned Schemer and Racket.
I have three versions of minikanren implementation:
The Reasoned Schemer, First Edition (MIT Press, 2005). I called it
TRS1https://github.com/miniKanren/TheReasonedSchemer
PS. It says that
condihas been replaced by an improved version ofcondewhich performs interleaving.The Reasoned Schemer, Second Edition (MIT Press, 2018). I called it
TRS2https://github.com/TheReasonedSchemer2ndEd/CodeFromTheReasonedSchemer2ndEd
The Reasoned Schemer, First Edition (MIT Press, 2005). I called it
TRS1*
I have did some experiments about the three implementations above:
1st experiment:
TRS1
ANSWER
Answered 2021-Apr-28 at 07:07Your first experiment in TRS1 implementation, in Prolog ("and" is ,, "or" is ;) and in an equivalent symbolic Logic notation ("and" is *, "or" is +), proceeds as if
QUESTION
I'm doing exercises from The Little Schemer, but I do them in Racket using DrRacket.
One of the exercises has two methods referencing each other. Can this be done in Racket and if so, how?
When trying to do it in DrRacket ide I get an error because the one created higher up in the file can't reference something that comes after. I'm assuming this is because it's being interpreted, but I'm not sure.
Is there a way around this issue?
...ANSWER
Answered 2021-Mar-25 at 21:25Yes, this is possible in Racket. It's called "mutual recursion", to give an example, we can define the procedures odd? and even? in terms of each other - not the most efficient way to do it, but just to demonstrate the concept:
QUESTION
I've been playing around with d3.js for the first time and have managed to create a basic chloropleth map.
In essence there are 3 things remaining that i'd like to do, but am not familiar enough with d3 or Javascript to do them:
Make legend horizontal and move it below the coast of Africa
Add thin black border to all of the countries.
Perhaps automatically crop out antartica? This can be done in post processing if not possible
Not sure if these tasks are impossible or easy as I have not worked much with d3.js and wasn't making much headway.
...ANSWER
Answered 2021-Mar-20 at 16:58The first 2 are trivial. 1 is just a matter of changing the translate position of the legend and making it horizontal is just from looking at the d3-legend doc (https://d3-legend.susielu.com/#color-linear):
QUESTION
I was working with the minikanren library for Racket, but wanted to use the "disj" and "conj" operators. I want to be able to more explicitly declare whether I am using disj or conj for the sake of legibility rather than have to parse through a conde expression, especially once the expressions become more complicated. I copied the source from "The Reasoned Schemer":
...ANSWER
Answered 2021-Mar-05 at 20:00Hrmph. I can't seem to reproduce that behavior.
When I clone the TRS/2e repo, add both
QUESTION
I am a new schemer. Maybe this question is so easy. But it really bothers me.
I defined a procedure
...ANSWER
Answered 2021-Jan-14 at 06:34How many arguments does insertL take? Are you calling it with the right number of arguments in both places that you call it?
QUESTION
Suppose I have a string containing a date: "11/10/2020" (mm/dd/yyyy). Is there a way to parse this into a date data type in Racket? Scheme has SRFI 19 (Time Data Types and Procedures) which defines string->date for parsing date strings. Is there something similar in Racket?
ANSWER
Answered 2020-Nov-09 at 23:36There is something similar. It's ... SRFI 19:
QUESTION
My question is very similar to D3 V4 Properly placing a bubble in the US Map, but the map I'm using is a map of Scotland's local authority districts instead so I can't quite see how to apply either of the solutions.
I'm creating a bubble map on top of a choropleth map of Scotland, with circles at specified locations which I'm providing as latitude/longitude coordinates.
However, the locations of the circles are completely out - the circle for Aberdeen is in the sea!
Based on D3 V4 Properly placing a bubble in the US Map, I think perhaps the GeoJSON is pre-projected so I'm using two different projections, one for the map and one for the circles. Ideally I think I would find a different GeoJSON that didn't cause this problem, but I think the one I'm using from https://martinjc.github.io/UK-GeoJSON/ is the only one available.
So my question is, is there a sensible method for figuring out what projection this map is, in order that I can use the same projection for the circles?
...ANSWER
Answered 2020-Oct-24 at 15:54I have some bad news for you, the actual reason the points are wrong is that you're missing a minus sign in front of the latitude. Ayr has a latitude of -4.6, not 4.6. Just adding a - in front of the points fixed it for me.
QUESTION
I would like to implement a functional stack in scheme. This is my attempt:
...ANSWER
Answered 2020-Oct-23 at 05:12Your goals are contradictory. If s is a stack, and your operations purely functional, then (s 'push 1) must return the same thing every time it is called. To capture the notion of change, you must use a different s each time. That's how your functional stack works: it gives you back a new stack, and you must compose function calls with it.
QUESTION
This is a bit of follow-up to an earlier question I posted. My basic problem was to build a application with Gambit Scheme.
While the solution suggested in the question mentioned above works, it is kinda cumbersome so I decided to try and add Gambit Scheme as custom compiler/language to CMake. Following the suggestions in this question, I created the following files:
cmake/CMakeDetermineGambitCompiler.cmake:
...ANSWER
Answered 2020-Sep-07 at 12:02The following hacks should achieve what you are after. The solution releaves that gsc and cmake don't always play nice with each other, as they both have their own way of handling file extensions implicitly. Anyway, let's get started.
The series of commands I intend to reproduce from within cmake (with slightly different filenames) is
QUESTION
I have been playing around with miniKanren, trying to understand it by converting very basic Prolog tutorials into it.
I use Python habitually so I started with the LogPy library, which has since been forked and improved upon as a lib actually called miniKanren
From the example given in the lib's README we can see:
...ANSWER
Answered 2020-Jul-20 at 13:51This is an awesome question, and I think a great example to have around. It's supported but maybe not so neatly and straightforwardly as you're used to. We can describe a facts db, on a relation-by-relation basis, in the same style that you'd expect to write a recursive Kanren relation. I'm borrowing concrete syntax from TRS 2/e
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