大约有 46,000 项符合查询结果（耗时：0.0576秒） [XML]
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
...
answered May 26 '16 at 17:40
Red.WaveRed.Wave
1,19155 silver badges88 bronze badges
...
Encrypt & Decrypt using PyCrypto AES 256
...nhances the alignment of the key and secret phrase with 32 bytes and iv to 16 bytes:
import base64
import hashlib
from Crypto import Random
from Crypto.Cipher import AES
class AESCipher(object):
def __init__(self, key):
self.bs = AES.block_size
self.key = hashlib.sha256(key.e...
What does “dereferencing” a pointer mean?
...
Reviewing the basic terminology
It's usually good enough - unless you're programming assembly - to envisage a pointer containing a numeric memory address, with 1 referring to the second byte in the process's memory, 2 the third, 3 the fourth and so on....
What ha...
Validating IPv4 addresses with regexp
...so it ends with a word boundary rather than with the end of line? Additionally here I've marked the non-capturing groups to avoid unwanted sub-matches. NB: This still doesn't take into account @dty's comment as I'm not familiar with that form of IP; though he's correct that it seems valid.
...
How to use if statements in underscore.js templates?
...ue proposed in this answer is that you're stuck doing string interpolation all over again, which templates are supposed to solve for you. As of right now, _.template inserts a ; at the start of each compiled code tag. Thus, it can handle tags breaking between statements, but not inside of expression...
How do I remove  from the beginning of a file?
...oks fine when I open it using gedit , but when it's read by PHP (to merge all the CSS files into one), this CSS has the following characters prepended to it: 
...
getenv() vs. $_ENV in PHP
...erent results.
– rich remer
Aug 10 '16 at 23:17
Added getenv() advantage: you don't need to check isset/empty before a...
How to get a key in a JavaScript object by its value?
...pt object, which I use as an associative array. Is there a simple function allowing me to get the key for a value, or do I have to iterate the object and find it out manually?
...
How to forward declare a template class in namespace std?
...rs. Of course, I know that there are more template params for std::list (allocator I think). But, that is beside the point. Do I have to know the full template declaration of a template class to be able to forward declare it?
...
NSAttributedString add text alignment
...paragraphRef};
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Hello World" attributes:attributes];
share
|
improve this answer
|
follow
...