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How much is the overhead of smart pointers compared to normal pointers in C++?
... the iteration is done you'll know you have to erase it. So you could gain extra memory from not using a smart_ptr...
But do you really want to do that?
A single memory leak could make your product have a point of failure in time (let's say your program leaks 4 megabytes each hour, it would take mon...
How to remove illegal characters from path and filenames?
...st and simple way to remove illegal path and file characters from a simple string. I've used the below code but it doesn't seem to do anything, what am I missing?
...
How to compare binary files to check if they are the same?
...es that also contain some ascii text. Many do, at least begin with a magic string.
– Felix Dombek
Jul 12 '19 at 11:20
...
How do I trim leading/trailing whitespace in a standard way?
...ferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.
...
What is a method that can be used to increment letters?
...
Simple, direct solution
function nextChar(c) {
return String.fromCharCode(c.charCodeAt(0) + 1);
}
nextChar('a');
As others have noted, the drawback is it may not handle cases like the letter 'z' as expected. But it depends on what you want out of it. The solution above will re...
PHP passing $_GET in linux command prompt
...opulate $_GET anyway, you can do this:
// bash command:
// export QUERY_STRING="var=value&arg=value" ; php -e myscript.php
parse_str($_SERVER['QUERY_STRING'], $_GET);
print_r($_GET);
/* outputs:
Array(
[var] => value
[arg] => value
)
*/
You can also execute a...
Need to handle uncaught exception and send log file
... app
}
}
(3) Extract log (I put this an my SendLog Activity):
private String extractLogToFile()
{
PackageManager manager = this.getPackageManager();
PackageInfo info = null;
try {
info = manager.getPackageInfo (this.getPackageName(), 0);
} catch (NameNotFoundException e2) {
}
St...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...eversed bits of v; first get LSB of v
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
for (v >>= 1; v; v >>= 1)
{
r <<= 1;
r |= v & 1;
s--;
}
r <<= s; // shift when v's highest bits are zero
Faster (32-bit processor)
unsigned char b = x;
b = ((...
uint8_t vs unsigned char
...
@endolith, using uint8_t for a string isn't necessarily wrong, but it's definitely weird.
– Mark Ransom
Nov 14 '11 at 13:58
5
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How to trim a string to N chars in Javascript?
How can I, using Javascript, make a function that will trim string passed as argument, to a specified length, also passed as argument. For example:
...