大约有 43,000 项符合查询结果（耗时：0.0591秒） [XML]
Shiro vs. SpringSecurity [closed]
...ften a joy to use.
For example, how do you hash+salt a password and base64 encode it in Java or Spring Security? Neither are as simple and intuitive as Shiro's solution:
ByteSource salt = new SecureRandomNumberGenerator().nextBytes();
new Sha512Hash(password, salt).toBase64();
No need for com...
How to detect Safari, Chrome, IE, Firefox and Opera browser?
...
1764
Googling for browser reliable detection often results in checking the User agent string. This m...
How do I detect unsigned integer multiply overflow?
...nting mathematical positive integers, not positive integers mod 2^32 (or 2^64). The distinction between overflow as a deviation from mathematical infinite-sized integer behaviour, and overflow as an undefined behaviour in the language seems rarely to be made explicit.
– Chris J...
Are string.Equals() and == operator really same? [duplicate]
... a particular sequence of 32,000 characters, interning the string may save 64K for each copy that would otherwise be created. But if one interns a 32,000 character string and never again uses that sequence of characters, one will permanently waste 64K of memory. Programs can't afford to do that to...
Is it safe to assume a GUID will always be unique?
... numbers are still high, the chances of a GUID collision are over 50% at 2^64 GUIDs.
– NullUserException
Oct 22 '12 at 23:23
...
Clear icon inside input text
...ll classes, resets the input value and hides the icon.
7x7px gif:
Base64 string:
data:image/gif;base64,R0lGODlhBwAHAIAAAP///5KSkiH5BAAAAAAALAAAAAAHAAcAAAIMTICmsGrIXnLxuDMLADs=
share
|
improve...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
...nstration: again, linked here) - though this is a result compounded by the 64-bit machine. This difference really demonstrates two things: first (1), a boxed Int32-type "object" (ArrayList) is much bigger than a pure Int32 primitive type (List); second (2), the difference is exponential as a result ...
Understanding MongoDB BSON Document size limit
...or example,
the full uncompresses text of "War of
the Worlds" is only 364k (html):
http://www.gutenberg.org/etext/36
If your blog post is that long with
that many comments, I for one am not
going to read it :)
For trackbacks, if you dedicated 1MB
to them, you could easily have ...
node.js global variables?
..._ELEMENT: 4 },
Float32Array: { [Function] BYTES_PER_ELEMENT: 4 },
Float64Array: { [Function] BYTES_PER_ELEMENT: 8 },
DataView: [Function: DataView],
global: [Circular],
process:
{ EventEmitter: [Function: EventEmitter],
title: 'node',
assert: [Function],
version: 'v0.6.5...
best way to preserve numpy arrays on disk
...
64
I'm a big fan of hdf5 for storing large numpy arrays. There are two options for dealing with hd...