How can I cast int to enum?
How can an int be cast to an enum in C#? 3 32
casting
Why don’t Java’s +=, -=, *=, /= compound assignment operators require casting?
Until today, I thought that for example: i += j; Was just a shortcut for: i = i + j; But if we try this: int i = 5; long j = 8; Then i = i + j; will not compile but i += j; will compile fine. Does it mean that in fact … Read more
Convert String to double in Java
You can use Double.parseDouble() to convert a String to a double: String text = “12.34”; // example String double value = Double.parseDouble(text); For your case it looks like you want: double total = Double.parseDouble(jlbTotal.getText()); double price = Double.parseDouble(jlbPrice.getText());
Converting double to integer in Java
is there a possibility that casting a double created via Math.round() will still result in a truncated down number No, round() will always round your double to the correct value, and then, it will be cast to an long which will truncate any decimal places. But after rounding, there will not be any fractional parts remaining. Here are the docs from Math.round(double): … Read more
Convert an integer to an array of characters : java
Convert an integer to an array of characters : java
How do I check if a string is a number (float)?
What is the best possible way to check if a string can be represented as a number in Python? The function I currently have right now is: def is_number(s): try: float(s) return True except ValueError: return False Which, not only is ugly and slow, but also seems clunky. However, I haven’t found a better method … Read more
If Java is Strongly typed then why does this code compile?
My understanding of strongly typed was that the language wouldn’t make implicit type conversions. However, this code converts the char to it’s ascii value and then uses that value. static char x = ‘j’; static int y = 7; public static void main(String[] args){ System.out.println(y+x); }
Convert boolean to int in Java
Convert boolean to int in Java
Do I cast the result of malloc?
TL;DR int *sieve = (int *) malloc(sizeof(int) * length); Has two problems in result of malloc. The cast and that you’re using the type instead of variable as argument for sizeof. Instead, do like this: int *sieve = malloc(sizeof *sieve * length); Long version No; you don’t cast the result, since: It is unnecessary, as void * is automatically … Read more
