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How to programmatically send SMS on the iPhone?
...aling operations. (Imagine if the game instead dialed 911 at a particular time of day)
Your best bet is to set up an intermediate server on the internet that uses an online SMS sending service and send the SMS via that route if you need complete automation. (ie, your program on the iPhone sends a...
How to trim whitespace from a Bash variable?
I have a shell script with this code:
42 Answers
42
...
How does PHP 'foreach' actually work?
...cally you have the same situation as above.
Another small variation, this time we'll assign the array to another variable:
$foo = $array;
foreach ($array as $val) {
var_dump(current($array));
}
/* Output: 1 1 1 1 1 */
Here the refcount of the $array is 2 when the loop is started, so for once...
How does Facebook disable the browser's integrated Developer Tools?
...
});
var i = 0;
function showWarningAndThrow() {
if (!i) {
setTimeout(function () {
console.log("%cWarning message", "font: 2em sans-serif; color: yellow; background-color: red;");
}, 1);
i = 1;
}
throw "Console is disabled";
}
var l, n = {
s...
Get a random boolean in python?
I am looking for the best way (fast and elegant) to get a random boolean in python (flip a coin).
8 Answers
...
Return a `struct` from a function in C
... You certainly don't need pointers. That said, most of the time you would want to use them - the implicit memory copies that take place flinging structures around by value can be a real waste of CPU cycles, not to mention memory bandwidth.
– Carl Norum
...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...s to retrieve. Is it faster to get all 600 of them in one query, or 1 at a time in 600 queries. Unless you're on MyISAM and/or you have a poorly normalized/poorly indexed schema (in which case the ORM isn't the problem), a properly tuned db will return the 600 rows in 2 ms, while returning the indiv...
What's the difference between event.stopPropagation and event.preventDefault?
...Parent() {
alert('div Clicked');
}
</script>
This time if you click on Link the function executeParent() will not
be called and you will not get the javascript alert div Clicked
this time. This is due to us having prevented the propagation to the
parent div using event...
Database design for audit logging
Every time I need to design a new database I spend quite some time
thinking on how I should set up the database schema to keep an audit log of
the changes.
...