Consider the following example: class Quirky { public static void main(String[] args) { int x = 1; int y = 3; System.out.println(x == (x = y)); // false x = 1; // reset System.out.println((x = y) == x); // true } } I’m not sure if there is an item in the Java Language Specification … Read more
Are the two statements below equivalent? SELECT […] FROM […] WHERE some_col in (1,2,3,4,5) AND some_other_expr and SELECT […] FROM […] WHERE some_col in (1,2,3) or some_col in (4,5) AND some_other_expr Is there some sort of truth table I could use to verify this? 4 Answers 4
This question already has answers here: Difference between pre-increment and post-increment in a loop? (23 answers) Closed 7 years ago. The following for loops produce identical results even though one uses post increment and the other pre-increment. Here is the code: for(i=0; i<5; i++) { printf(“%d”, i); } for(i=0; i<5; ++i) { printf(“%d”, i); } … Read more
I have a codebase where developers decided to use AND and OR instead of && and ||. I know that there is a difference in operators’ precedence (&& goes before and), but with the given framework (PrestaShop to be precise) it is clearly not a reason. Which version are you using? Is and more readable … Read more
If I do this: >>> False in [False, True] True That returns True. Simply because False is in the list. But if I do: >>> not(True) in [False, True] False That returns False. Whereas not(True) is equal to False: >>> not(True) False Why? 8 s 8
#include <stdio.h> int main(void) { int i = 0; i = i++ + ++i; printf(“%d\n”, i); // 3 i = 1; i = (i++); printf(“%d\n”, i); // 2 Should be 1, no ? volatile int u = 0; u = u++ + ++u; printf(“%d\n”, u); // 1 u = 1; u = (u++); printf(“%d\n”, u); … Read more
[c]#include <stdio.h> int main(void) { int i = 0; i = i++ + ++i; printf("%d\n", i); // 3 i = 1; i = (i++); printf("%d\n", i); // 2 Should be 1, no ? volatile int u = 0; u = u++ + ++u; printf("%d\n", u); // 1 u = 1; u = (u++); printf("%d\n", u); … Read more
