大约有 48,000 项符合查询结果（耗时：0.0600秒） [XML]
How many random elements before MD5 produces collisions?
...
"probability of collision is 1/2^64" - what? The probability of collision is dependent on the number of items already hashed, it's not a fixed number. In fact, it's equal to exactly 1 - sPn/s^n, where s is the size of the search space (2^128 in this case), and n...
Why does the JavaScript need to start with “;”?
... is my function a */
}
a()
(function() {
/* This is my closure */
})()
What will happen is that it will be evaluated like this:
function a() {
/* this is my function a */
}
a()(function() {})()
So what ever a is returning will be treated as a function an tried to be initialized.
This is m...
What is the difference between a stored procedure and a view?
...
but WHY would you do that? what are you trying to accomplish? You can use a view AS a table... stored procedures are for DOING things... views are for making your life easier.
– Patrick
Mar 4 '11 at 14:31
...
SQL - Update multiple records in one query
...
Yee, that's fine but what when I wolud like to update 16 records in one query? I sholud use JOIN x 16 ?
– user3022527
Nov 27 '13 at 23:39
...
Is SHA-1 secure for password storage?
...s a "black box" with no special property that the attacker may use. That's what you have right now even with the "broken" hash functions MD5 and SHA-1.
About rainbow tables:
The "rainbow attack" is actually cost-sharing of a dictionary or brute force attack. It is a derivative from the time-memory...
How do you remove duplicates from a list whilst preserving order?
... (stackoverflow.com/questions/3949310/…), so basically you're just doing what the interpreter would've done anyway.
– Imran
Jun 18 '13 at 6:58
...
Random color generator
...(b * 255)).toString(16)).slice(-2);
return (c);
}
If you wish to see what this looks like in action see http://blog.adamcole.ca/2011/11/simple-javascript-rainbow-color.html.
share
|
improve th...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...chema, $customer3_documents_schema? Mh... dont seem a reliable way... and what about performance? And what about the code of my application (will be php and python)? so many schemas..
– Strae
Jul 20 '09 at 15:22
...
iOS: How to store username/password within an app?
...sswordForService:@"AnyService" account:@"AnyUser"];
Where setPassword is what value you want saved and forService is what variable you want it saved under and account is for what user/object the password and any other info is for.
...
Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
...
That is what the 'anonymizeIp': true option is for, this will not store an ip-address. I like to use localstorage over cookies for a couple of reasons that have nothing to do with the cookie law.
– Elmer
...