seth | JavaScript DSL for functional Set Theory | Functional Programming library
kandi X-RAY | seth Summary
kandi X-RAY | seth Summary
I made it up. Functional Set Theory is not a mathematical concept or a subset of set theory. When I say "functional set theory," what I mean is set theory composed of functions instead of definite elements in a manner similarly expressed by functional programming languages. A functional set is not a list or range of elements, but it is instead a Boolean function that states whether a given element matches a given set’s criteria of containment. Why would I use such big words to construct an imaginary concept, one that is not even mathematically sound? Performance, duh. The real theory is computationally inefficient. For example, how would a computer store a set of everything, all combinations and deviations of numbers, strings, and objects? A computer will never have enough memory to capture everything. Even the smaller set of all numbers could not be stored in the memory of a computer. Yet Seth could not be limited to simple, short-length arrays of values. Seth needed something faster, more concise, and most importantly composable. The solution was functions and logic. Functions are awesome because they are lazy, exempt from depleting memory resources until they are evaluated. Logic is awesome because it is lightning fast and expressive. Combined they can efficiently express set theory. Instead of writing out every possible value in the universe, a set of everything in Seth can be expressed with one simple function. No matter what x is, the function returns true because the set contains everything. The set of all numbers is just as easy to create. These sets can then be composed into new sets with different meanings. That’s amazing. What’s more is the performance of this abstraction: in personal testing of Seth, 75 tests of the entire codebase only took 24ms. This is only the scratching surface of what is feasible with Seth.
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seth Key Features
seth Examples and Code Snippets
Lines of Code : 33License : Strong Copyleft (CC BY-SA 4.0)
Copy{
"contacts": [
{
"id": 1,
"name": "Seth Ladd"
},
{
"id": 2,
"name": "Eric Seidel"
}
]
}
import 'dart:convert';
import 'dart:io';
import 'package:flutter_test/flutter_tesecho foobar | seth account create --nonce=0 --wait keyAliasName
#!/usr/bin/expect
spawn ./your_script.sh
expect "Enter passphrase to unlock keyAliasNam"
send "foobar\n"
interact
Community Discussions
Trending Discussions on seth
QUESTION
I am using the Bootleaf IAG framework.
I can not figure out how to get the bounding coordinates of a filtered layer.
I am modifying the bootleaf code to query points with a polygon layer. The Query Widget already allows users to draw a polygon, but I want to select a polygon from a layer hosted on my arcgis server. I modified the filter widget by removing the text field and allowing my users to select polygon layers and values from a dropdown menu. This works fine.
Now I need to take the result of the layer.setWhere(where, handleError); code and merry it with the query below. I need selectedPolygon to equal the result of layer.setWhere(where, handleError); and use the bounding coordinates in the .within section of the query.
I have tried a number of things, L.latLngBounds, getBounds(), and toGeoJSON().features[0].geometry.coordinates to name a few, but but I can not figure out how to pull out the bounds. What is the correct code?
ANSWER
Answered 2021-Jun-09 at 01:16I don't know much about bootleaf, but here are some tips to get you started. Based on your question and comments, this will hopefully clear things up and instruct you on how to apply what you need in your scenario.
Hook UI tosetWhere
When the user selects an option from the UI, you can call setWhere on the layer you're providing from the arcgis server. Let's say there's a polygon layer, in my example, called statesFeatureLayer, which is an L.esri.featureLayer
QUESTION
I have the following table:
...ANSWER
Answered 2021-May-27 at 17:39First I would create a table t1 with columns parent_name and age_child. Then, I would simply select from t1 using simple group by/aggregation. Like so:
QUESTION
I have a dictionary
...ANSWER
Answered 2021-Jun-05 at 16:54You need to:
QUESTION
I am trying to retrieve a method from the Rectangle Class in the Main Class, but it is not working. The goal would be that the user clicks on the Rectangle button and then a Rectangle appears. However, the rectangle must not disappear again. Additionally, the user should be able to change the properties (like size and position).
I am not sure if I should try the callback function? I would really appreciate your help!
Thanks a lot in advance!
...ANSWER
Answered 2021-May-27 at 19:55It is in fact working (the rect.draw() function fires when you click the button). You can verify this by placing a print statement in the callback function:
QUESTION
UPDATE! As Seth Luke asked, why a ref instead of a state, so I did that, and now the lines get drawn! but one step behind. Check out these lines:
...ANSWER
Answered 2021-May-26 at 14:34I can't see anything out of the ordinary. But try moving MapEvents outside the Map component. Something like
QUESTION
I am trying to making a python autogenerated Email app but there is a problem when running the code the traceback error shows up but I did write the code as my mentor write it down. This is the code that I used:
...ANSWER
Answered 2021-May-18 at 03:10Try and set the encoding to UTF-8
For example:
file = open(filename, encoding="utf8")
For reference check this post:
UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
QUESTION
I have a movieDetails.json database and the collection name is a movie then our teacher wants us to Display the number of movies based on the number of directors a movie has a. Hint you might have to use the javascript function split Since the director is not an array, it is only a string so I can't count how many directors are there because it will always come out as 1 since its a string so I want to split that string so that I can get an array so that I can count it. But unfortunately, I don't know the query that will solve this problem. ex. of expected output:
...ANSWER
Answered 2021-Apr-28 at 11:45Demo - https://mongoplayground.net/p/y3kvFnocWKn
Use aggregation query
Read the below links for better understanding
QUESTION
I am making a game in python using the turtle module.
I want the screen to move with the turtle on the y coordinate.
The problem is that the screen isn't moving with the turtle but when I don't change the screen size it works better.
I've written this code:
...ANSWER
Answered 2021-Apr-26 at 02:16The problem is that the screen isn't moving with the turtle ... Does anyone know why?
I know why. First, @martineau is correct, as usual +1, about passing the wrong range of values to yview_moveto(). But there's another piece to this puzzle: tkinter and turtle do not use the same coordinate system! You need to correct for the coordinate system difference, then turn the value into a percentage.
Here's a stripped down example based on your code and desired behavior. It keeps the ball in the middle of the window but you can tell from the numbers, and the vertical scroll bar, it's falling. Tap the the up arrow to slow it down -- tap it again to stop the motion. Tap it once more to start rising. Or use the down arrow to reverse your movement again:
QUESTION
I have this huge netflix dataset which I am trying to see which actors appeared in the most movies/tv shows specifically in America. First, I created a list of unique actors from the dataset. Then created a nested for loop to loop through each name in list3(containing unique actors which checked each row in df3(filtered dataset with 2000+rows) if the column cast contained the current actors name from list3. I believe using iterrows takes too long
...ANSWER
Answered 2021-Apr-15 at 01:37Use
QUESTION
I would like to have control over the colors of each label in the Sunburst diagram below - when using plotly.graph_objects instead of plotly.express.
See example from documentation below:
...ANSWER
Answered 2021-Apr-03 at 11:09That would allow accessing and control the markers:
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