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A fast method to round a double to a 32-bit int explained
...le is represented like this:
and it can be seen as two 32-bit integers; now, the int taken in all the versions of your code (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa.
Now, to the magic num...
Call a Server-side Method on a Resource in a RESTful Way
...reasons:
(1) Given only the service URI, how will a "random" programmer know the ACTION verb exists?
(2) if the programmer knows it exists, how will he know its semantics? What does that verb mean?
(3) what properties (safety, idempotence) should one expect that verb to have?
(4) what if the progr...
How can I resolve “Error: No developer directory found at /Developer”?
...using a script to build (and then deploy through Testflight) my app.
But I now receive this error:
4 Answers
...
Dynamically creating keys in a JavaScript associative array
...l = dict["2bob2"];
// Read value of our cool secret key
val = dict[key];
Now let's change values:
// Change the value of fred
dict.fred = "astra";
// The assignment creates and/or replaces key-value pairs
// Change the value of 2bob2
dict["2bob2"] = [1, 2, 3]; // Any legal value can be used
// ...
JavaScript closure inside loops – simple practical example
...{
funcs[i] = createfunc(i);
}
for (var j = 0; j < 3; j++) {
// and now let's run each one to see
funcs[j]();
}
Since there is no block scope in JavaScript - only function scope - by wrapping the function creation in a new function, you ensure that the value of "i" remains as you inte...
Django MEDIA_URL and MEDIA_ROOT
...
I've been struggling for 2 days now why my images return 404. This is the only thing I'm missing and I can't find it in Django doc. Thanks.
– tambalolo
Aug 12 '13 at 2:45
...
Virtual Serial Port for Linux
...en another terminal and write (Terminal 2):
echo "Test" > /dev/pts/3
Now back to Terminal 1 and you'll see the string "Test".
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How to parse JSON to receive a Date object in JavaScript?
...
There is now a standard JSON date format. tools.ietf.org/html/rfc7493#section-4.3
– Bryan Larsen
Feb 6 '17 at 14:18
...
How to convert a char array back to a string?
...
@A.H. I don't know about that. String gave way to StringBuffer which gave way to StringBuilder. I bet StringBuffer proponents said the same thing then, and now have to refactor code to use StringBuilder.
– corsiKa
...
What are C++ functors and their uses?
...
int operator()(int y) const { return x + y; }
private:
int x;
};
// Now you can use it like this:
add_x add42(42); // create an instance of the functor class
int i = add42(8); // and "call" it
assert(i == 50); // and it added 42 to its argument
std::vector<int> in; // assume this conta...