Converting Integers Archives

Kotlin: convert Int to Hex String in Kotlin

January 17, 2021 Eaton Kyle

Question or issue of Kotlin Programming: I’m looking for a similar function to Java’s Integer.toHexString() in Kotlin. Is there something built-in, or we have to manually write a function to convert Int to String?

Could not find an overload for ‘*’ that accepts the supplied argument

January 14, 2021 Bell Jacquise

Question or problem in the Swift programming language: I have converted a String to an Int by by using toInt(). I then tried multiplying it by 0.01, but I get an error that says Could not find an overload for ‘*’ that accepts the supplied argument. Here is my code:

Counting positive integer elements in a list with Python list comprehensions

January 10, 2021 Odhran Miss

Question or problem about Python programming: I have a list of integers and I need to count how many of them are > 0. I’m currently doing it with a list comprehension that looks like this:

Casting an int to a string in Python

January 8, 2021 Aba Tayler

Question or problem about Python programming: I want to be able to generate a number of text files with the names fileX.txt where X is some integer:

How to get integer values from a string in Python?

January 4, 2021 Ollie MC

Question or problem about Python programming: Suppose I had a string

Split an integer into digits to compute an ISBN checksum

January 4, 2021 Simon Abital

Question or problem about Python programming: I’m writing a program which calculates the check digit of an ISBN number. I have to read the user’s input (nine digits of an ISBN) into an integer variable, and then multiply the last digit by 2, the second last digit by 3 and so on. How can I […]

How to split a string of space separated numbers into integers?

January 3, 2021 Jeffrey Schneider

Question or problem about Python programming: I have a string “42 0” (for example) and need to get an array of the two integers. Can I do a .split on a space?

Integer square root in python

January 2, 2021 Aba Tayler

Question or problem about Python programming: Is there an integer square root somewhere in python, or in standard libraries? I want it to be exact (i.e. return an integer), and bark if there’s no solution.

In Django models.py, what’s the difference between default, null, and blank?

December 30, 2020 Abreonia Ng

Question or problem about Python programming: What’s the difference? When do you use what? How to solve the problem: Solution 1: Direct from Django model field reference: Field.null If True, Django will store empty values as NULL in the database. Default is False. Note that empty string values will always get stored as empty strings, […]

Converting to Char/String from Ascii Int in Swift

December 30, 2020 Aba Tayler

Question or problem in the Swift programming language: I’m trying to convert the integer representation of an ascii character back into a string.