大约有 24,000 项符合查询结果（耗时：0.0315秒） [XML]
Why are only a few video games written in Java? [closed]
...ing.
[...snip...]
Write-once-run-anywhere. Ha. Hahahahaha. We are only testing on four platforms right now, and not a single pair has the exact same quirks. All the commercial games are tweaked and compiled individually for each (often 100+) platform. Portability is not a justification for the a...
In what cases do I use malloc and/or new?
...s thrown from the source of the error. Wrapping malloc with an appropriate test at every call seems tedious and error prone. (You only have to forget once to undo all that good work). An exception can be allowed to propagate to a level where a caller is able to sensibly process it, where as NULL is ...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...ry so you can avoid this overhead.
Still an advantage?
Most DBMS' (the latest editions) will cache the query plans for INDIVIDUAL SQL statements, greatly reducing the performance differential between stored procs and ad hoc SQL. There are some caveats and cases in which this isn't the case, so you...
std::string formatting like sprintf
...size (OS specific)
}
return str;
}
A safer and more efficient (I tested it, and it is faster) approach:
#include <stdarg.h> // For va_start, etc.
#include <memory> // For std::unique_ptr
std::string string_format(const std::string fmt_str, ...) {
int final_n, n = ((in...
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
...ting bytes and the MacRoman-suggesting bytes, and go with whichever is greatest.
share
|
improve this answer
|
follow
|
...
How can I store my users' passwords safely?
... your password hashes, he has to burn a considerable amount of CPU time to test his dictionary against your hashes.
– caf
Oct 18 '09 at 5:51
4
...
Sort points in clockwise order?
...e approximate minimum to the Traveling Salesman Problem (TSP), ie. the shortest route linking all your points. If your points form a convex shape, it should be the right solution, otherwise, it should still look good (a "solid" shape can be defined as one that has a low perimeter/area ratio, which i...
asynchronous vs non-blocking
...you must figure out.
To make a good choice, you must analyze your need and test the performance of different architectures. There is no such an architecture that is suitable for various of needs.
share
|
...
Version vs build in Xcode
...thFormat:@"Version: %@ (%@)", appVersionString, appBuildString];
This is tested with Xcode Version 4.6.3 (4H1503). The build number is often written in parenthesis / braces. The build number is in hexadecimal or decimal.
In Xcode you can auto-increment the build number as a decimal number by ...
Find the nth occurrence of substring in a string
...'s or @Mark Byers' answer should be accepted instead of @bobince's.
In my testing, the version of find_nth() above was the fastest pure Python solution I could come up with (very similar to @Mark Byers' version). Let's see how much better we can do with a C extension module. Here is _find_nthmodule...