大约有 47,000 项符合查询结果（耗时：0.0738秒） [XML]
Easy way to turn JavaScript array into comma-separated list?
... comma-separated list. Is there a simple way in garden-variety JavaScript (or jQuery) to turn that into a comma-separated list? (I know how to iterate through the array and build the string myself by concatenation if that's the only way.)
...
How to check if an NSDictionary or NSMutableDictionary contains a key?
I need to check if an dict has a key or not. How?
15 Answers
15
...
What really is a deque in STL?
...nds in constant time, but I am troubled by the promise made by the operator [] to be done in constant time. In a linked list, arbitrary access should be O(n), right?
...
How do I move a file (or folder) from one folder to another in TortoiseSVN?
I would like to move a file or folder from one place to another within the same repository without having to use Repo Browser to do it, and without creating two independent add/delete operations. Using Repo Browser works fine except that your code will be hanging in a broken state until you get any...
Cross cutting concern example
What is a good example of a cross-cutting concern ? The medical record example on the wikipedia page seems incomplete to me.
...
When are you truly forced to use UUID as part of the design?
...
I wrote the UUID generator/parser for Ruby, so I consider myself to be reasonably well-informed on the subject. There are four major UUID versions:
Version 4 UUIDs are essentially just 16 bytes of randomness pulled from a cryptographically secure r...
What does -D_XOPEN_SOURCE do/mean?
...
When you do
#define _XOPEN_SOURCE <some number>
or
cc -D_XOPEN_SOURCE=<some number>
it tells your compiler to include definitions for some extra functions that are defined in the X/Open and POSIX standards.
This will give you some extra functionality that exists ...
Array.Copy vs Buffer.BlockCopy
... Should you use it at any time when you are copying primitive type arrays, or should you only use it if you're coding for performance? Is there anything inherently dangerous about using Buffer.BlockCopy over Array.Copy ?
...
Use of the MANIFEST.MF file in Java
...eparated from its value by a colon. The default manifest shows that it conforms to version 1.0 of the manifest specification.
The manifest can also contain information about the other files that are packaged in the archive. Exactly what file information is recorded in the manifest will depend on the...
What is the difference between a definition and a declaration?
...ion introduces an identifier and describes its type, be it a type, object, or function. A declaration is what the compiler needs to accept references to that identifier. These are declarations:
extern int bar;
extern int g(int, int);
double f(int, double); // extern can be omitted for function dec...