All Questions
137
questions
1
vote
1
answer
22
views
ComputeError with polars dataframe while trying to pass a column expressions in a simple shift() operation
Sorry, I'm starting out in Polars. Is there a way to achieve the same functionality of the shift(n) function where n is a dataframe variable.
When I try:
df = pl.DataFrame({
"a": [1, 2, ...
- 11
-2
votes
1
answer
89
views
Fonction skip bool and doesn't calculate [duplicate]
Welcome in my misery.
I'm a novice/beginner in coding :)
I've been trying to write a calculator that detects
anomalies in the input provided.
My first problem was to neglect any letters and
that was ...
8
votes
2
answers
150
views
How to introspect a Raku operator?
I can introspect routines in Raku, for example the say
routine:
[5] > &say.WHAT ...
- 11.4k
0
votes
2
answers
303
views
Are operators in C implemented as functions like C++?
I was reading a tutorial on operator overloading in C++ when I saw this:
In C++, operators are implemented as functions. By using function overloading on the operator functions, you can define your ...
- 47
-5
votes
2
answers
490
views
Write a function definition named quotient that takes in two numbers and returns the quotient of dividing the first argument by the second argument
I am taking an assessment for JavaScript and I am stuck. I have tried tweaking and moving things around with no luck. Basically it is a series of questions that once answered correctly moves onto the ...
0
votes
4
answers
126
views
Python script that increases a number by a percent and then with a new number till goal
I found this problem and wanted to try to execute, but got stuck:
Compile a program that allows you to determine how many days will be enough for 200 something if consumed on the first day 5 tons, but ...
- 3
1
vote
2
answers
91
views
Understanding how the "is" operator works int Python for result from function
For example we have this code.
x = 1
y = 1
print(x is y) # TRUE
print(id(x), id(y))
y = pow(10, 30, 10**30-1) # 1
print(type(y))
print(x, y, x is y) # FALSE
It`s return:
True
140516304938720 ...
- 13
0
votes
2
answers
74
views
JavaScript: rest operator function returning NaN
I'm trying to resolve some FCC tuts. The function should be very simple, a sum function for args as an array, using the rest operator. However I don't get why my answer doesn't work, here is the code ...
0
votes
1
answer
959
views
How to make a function which multiplies two values
So, I was writing overly complex answers for simple problems on Codewars as I often do, and one of the problems was,
Multiply two numbers
It wanted me to put:
return a * b
But I wanted to make a ...
- 26
-2
votes
2
answers
55
views
Why can't I pass operator to a function from an other in C++?
In my C++ homework (where I have to short different arrays with different methods), I run into a problem. I can't pass comp() from one function to another.
Here is a simplified version of my code:
...
- 99
-4
votes
1
answer
109
views
Difference between -- , -= 1 and - 1
I have been working through some freeCodeCamp exercises and while working on a recursion problem in which all the numbers between a given range have to be added to an array (including both the numbers)...
- 435
1
vote
2
answers
458
views
Making variables available inside environment with load function in Lua
This question has some reference to the question Defining logical operator implies in lua.
The following code works fine.
local function _implies(a, b)
if a == 1 and b == 0 then return 0
...
- 366
-1
votes
2
answers
99
views
How do i find the number of projects that two employees with specific names that have worked together? (using LIKE operator )
Let's say I want to find the number of projects the 2 employees Jim Sullivan and Anna Schimdt have worked on together. We have 3 tables employees, workson, project.
Employees
employeeid
name
110
Jim ...
0
votes
0
answers
29
views
What does %_Arguments(0) do in javascript? [duplicate]
Wondering why string concatenation is faster than array join, I came across this post which features the following code:
// ECMA-262, section 15.5.4.6
function StringConcat() {
if (...
- 1,771
0
votes
2
answers
31
views
Define a factory function that accepts a set of operators as inputs
I have been working on a simple calculator app using client side javascript and have implemented the program logic for the basic mathematical operations +, -, x, /. The code is implemented as callback ...
- 13