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Casting a variable using a Type variable
...andling an actual type. With proper interfaces that shouldn't be necessary 99.9% of the times. There are perhaps a few edge cases when it comes to reflection that it might make sense, but I would recommend to avoid those cases.
Edit 2:
Few extra tips:
Try to keep your code as type-safe as possib...
Iterator Loop vs index loop [duplicate]
...d a set(granted it is kindof like an array).
– Shipof123
Mar 14 '19 at 22:46
1
the question was i...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...line options:
gcc -std=c90 -pedantic ... # or -std=c89 or -ansi
gcc -std=c99 -pedantic
gcc -std=c11 -pedantic
See the gcc manual for more details.
gcc will be phasing out these definitions in future releases, so you shouldn't write code that depends on them. If your program needs to know whether...
DataTable: Hide the Show Entries dropdown but keep the Search box
...
Peter Hall
30.5k99 gold badges6565 silver badges128128 bronze badges
answered Jun 27 '17 at 11:06
NivNiv
...
What's the difference between “mod” and “remainder”?
...1, or -3 with remainder 1, the implementation just had to document which. C99 removed the flexibility, so now -5 / 2 is always -2.
– Steve Jessop
Dec 3 '12 at 13:23
...
Equation (expression) parser with precedence?
...p(1), pi: Math.atan2(1,1)*4 };
// input for parsing
// var r = { string: '123.45+33*8', offset: 0 };
// r is passed by reference: any change in r.offset is returned to the caller
// functions return the parsed/calculated value
function parseVal(r) {
var startOffset = r.offset;
var value;
...
Difference between a Structure and a Union
...
union foo x;
x.a = 3;
x.b = 'c';
printf("%i, %i\n", x.a, x.b);
prints
99, 99
Why are the two values the same? Because the last 3 bytes of the int 3 are all zero, so it's also read as 99. If we put in a larger number for x.a, you'll see that this is not always the case:
union foo x;
x.a = 387...
How can I get a count of the total number of digits in a number?
...ast to double) causes a computation error when the input value is exactly -999999999999999999: the LOG10 method returns 20 instead of 19. The LOG10 method also must have a if guard for the case when the input value is zero.
The LOG10 method is quite tricky to get working for all values, which means...
C char array initialization
...e for main() (and you should also use void, i.e., int main(void) { ... }. C99 got rid of this rule, so this code will not compile for C99 and later. The other thing to note here is that starting with C99, if you omit return in main, there is an automatic return 0; placed/implied before the } at main...
What is the behavior of integer division?
...@Philip Potter: I don't think it was defined in C89, and it isn't in the 1998 C++ standard. In those, of course (a / b) * b + a % b == a had to be satisfied, and the absolute value of a % b had to be less than a, but whether a % b was negative for negative a or b was not specified.
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