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Python int to binary string?
...ring type. Maybe a language where all strings are stored backwards or each char is a node in a linked list? For any typical language a string is basically an array of chars. In that case prefixing a string requires that a copy is made, how else are you going to put the character before the other cha...
How do I retrieve my MySQL username and password?
...ny additional entropy). Decrypting is easy peasy:
std::vector<unsigned char> decrypt(BYTE *input, size_t length) {
DATA_BLOB inblob { length, input };
DATA_BLOB outblob;
if (!CryptUnprotectData(&inblob, NULL, NULL, NULL, NULL, CRYPTPROTECT_UI_FORBIDDEN, &outblob)) {
...
What is a good Hash Function?
... that differ only in the last 4 bytes can collide easily. If you have a 30 character string, that differ in the last 4 bytes, after 28 bytes have been processes, the hashes differ only in the last 2 bytes. That means you are GUARANTEED a collision for one of the remaining two-byte values. (Yeah, it'...
Check if a string contains another string
...ontains a ","(comma) in it. Do we have any other option other than reading char-by-char?
4 Answers
...
Const before or const after?
...to constant pointer. Brilliant. And finally it explains why I can do const char as well as char const.
– Vit Bernatik
Mar 10 '17 at 17:48
2
...
How can I make SQL case sensitive string comparison on MySQL?
I have a function that returns five characters with mixed case. If I do a query on this string it will return the value regardless of case.
...
What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
...minal is historically slow (terminals or consoles are still slow), writing character by character is ineffective, writing a chunk of bytes is much more effective.
– Some programmer dude
Apr 4 '18 at 17:23
...
How can I catch a ctrl-c event?
...printf("Caught signal %d\n",s);
exit(1);
}
int main(int argc,char** argv)
{
struct sigaction sigIntHandler;
sigIntHandler.sa_handler = my_handler;
sigemptyset(&sigIntHandler.sa_mask);
sigIntHandler.sa_flags = 0;
sigaction(SIGINT, &sigIntHandler, NULL);
pau...
Elegant Python function to convert CamelCase to snake_case?
...etHTTPResponseCode').lower()
'get_httpresponse_code'
To ignore the first character simply add look behind (?!^)
>>> re.sub('(?!^)([A-Z]+)', r'_\1','CamelCase').lower()
'camel_case'
>>> re.sub('(?!^)([A-Z]+)', r'_\1','CamelCamelCase').lower()
'camel_camel_case'
>>> re.su...
List of standard lengths for database fields
...ize for names in your
database. In particular, do not assume that a four-character
Japanese name in UTF-8 will fit in four bytes – you are likely to
actually need 12.
https://www.w3.org/International/questions/qa-personal-names
For database fields, VARCHAR(255) is a safe default choic...