pineapple | pineapple lang is a simple programming language demo | Interpreter library
kandi X-RAY | pineapple Summary
kandi X-RAY | pineapple Summary
pineapple lang is a simple programming language demo. It includes a hand-written recursive descent parser and a simple interpreter. Although the language is not even Turing complete. But the main purpose of pineapple is to let beginners with compiling principles have a Warm up, simply understand ho
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of pineapple
pineapple Key Features
pineapple Examples and Code Snippets
Lines of Code : 10
License : No License
Copyconst invertKeyValues = (obj, fn) =>
Object.keys(obj).reduce((acc, key) => {
const val = fn ? fn(obj[key]) : obj[key];
acc[val] = acc[val] || [];
acc[val].push(key);
return acc;
}, {});
invertKeyValues({ a: 1, b: 2, c: 1 } def map_values(obj, fn):
return dict((k, fn(v)) for k, v in obj.items())
users = {
'fred': { 'user': 'fred', 'age': 40 },
'pebbles': { 'user': 'pebbles', 'age': 1 }
}
map_values(users, lambda u : u['age']) # {'fred': 40, 'pebbles': 1}
def in_range(n, start, end = 0):
return start <= n <= end if end >= start else end <= n <= start
in_range(3, 2, 5) # True
in_range(3, 4) # True
in_range(2, 3, 5) # False
in_range(3, 2) # False
Community Discussions
Trending Discussions on pineapple
QUESTION
This is not a Duplicate question, I spent 3 days searching here and there is no other question similar to mine!
This javascript generates random words only when called from one single div, or the first one when trying different DOM Methods to get Elements.
I've tried several options and combinations with getElementsBy ID, Tag, Name, Class, and CSS Selector.
However after several days searching and testing, I can't make it work in more than one div.
I need to use the same array as the only source for all my 36 divs, to generate random words from an onClick event on each of them.
I'm open to edit it, or completely change it.
This is what I have currently working for the first div using getElementsByClassName which I suppose should be the correct way as I need to call this script from several elements, not just one:
...ANSWER
Answered 2021-Jun-13 at 21:11You can create a loop to add the click handler to all fruits
QUESTION
I'm trying to generate some data for testing by duplicating existing data in my database. There are a number of tables linked by FKs and I want to keep the same data profile. I think it's easiest to explain with an example:
CustomerID Name Age 1 Fred 20 2 Bob 30 3 Joe 40 InvoiceID CustomerID Date 1 1 2020-01-01 2 2 2020-02-02 3 2 2020-03-03 4 3 2020-04-04 LineItemID InvoiceID Item Price Qty 1 1 Apples 1.5 5 2 2 Oranges 2 3 3 2 Peaches 2.5 6 4 3 Grapes 3 10 5 4 Pineapple 5 1I want to duplicate all the customers who are older than 18, including all of their linked data. So for the Customers table it's easy enough to do something like:
...ANSWER
Answered 2021-Jun-09 at 15:52You can use the OUTPUT clause:
QUESTION
Let's say we have a example dataframe like below,
...ANSWER
Answered 2021-Jun-08 at 12:42Use DataFrameGroupBy.shift for shift per groups:
QUESTION
I have a pandas DataFrame like below:
...ANSWER
Answered 2021-Jun-03 at 14:24Convert the Fruit column to ordered categorical type and sort the values
QUESTION
I have 4 postgres tables:
- Fruit with attribute freshness (int) that goes to 1 to 5 and a serial id pk
- Banana with curvature (int) that goes from 0 to 360 and a serial id pk that is both foreign key to fruit and bananas primary key
- Apple with color as text and the same fk pk id
- pineapple with weight as int and the same fk id as the other two
Heres an example for a fruit (you can imagine the others, they are very similar):
...ANSWER
Answered 2021-Jun-03 at 13:27You can qualify each table column and check them for non-nullity in a case statement
QUESTION
ANSWER
Answered 2021-Jun-02 at 17:42I found out a solution to your problem. Follow below steps
At first Add box class to every element that lies inside the box that toggle the dropdown
QUESTION
I want to eliminate the nested loop in my code and I can't seem to figure out the best way to do it. I have explained what I am trying to do below:
I have a dataframe df.
...ANSWER
Answered 2021-Jun-02 at 07:20my approach would be using .explode() method and pandas.merge() function.
QUESTION
I am having trouble finding a way to cleaning update the amount column in table 1 with the price column in table 2. I know that left_join and merge could be used to join the price column, rename it, and then drop it, but I am wondering if there is simpler way to avoid creating a mess.
I should state that the real dataset is more complicated and that the amount column in table 1 needs to be conditionally updated somehow based on table 2.
Table 1
Fruit Vegetable amount apple broccoli pear spinach pineapple carrotTable 2
Fruit Vegetable price apple broccoli 10 pear spinach 5 pineapple carrot 2 ...ANSWER
Answered 2021-Jun-01 at 02:21If you don't want to use merge and update process you can use match.
QUESTION
The problem statement is
Write a Java program to create a new array list, add some Fruits (String) and print out the collection.
My solution:
...ANSWER
Answered 2021-May-29 at 23:34When you call nextInt() it reads the integer, but does not read to the end of the line. So the next call to nextLine() then reads everything after the integer to the end of the line which gives you an empty string.
One easy way to fix this is to just add an extra call to nextLine() after reading the integer.
QUESTION
I am working on a project in which I need to post a new Course to my API. I tested this with POSTMAN and API works just fine, however when I try to post data using react fetch data is corrupted. While sending single strings like dishName: "pizza" works just fine and is shown in database I cannot manage to send an array of objects. I tried to do it in many ways like:
...ANSWER
Answered 2021-May-27 at 21:44You are setting the ingredients state as a string, so you are basically 'stringify' a string which will result in JSON SyntaxError. If you want to send an array that way you must specify the array bracket [ and ] in order to make it a valid array.
To solve it just change:
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