大约有 48,000 项符合查询结果（耗时：0.1024秒） [XML]
SQL, Postgres OIDs, What are they and why are they useful?
...e unsigned integers. They are not unique–OID counter will wrap around at 2³²-1. OID are also used to identify data types (see /usr/include/postgresql/server/catalog/pg_type_d.h).
In my experience, the feature is generally unused in most postgres-backed applications (probably in part because they...
Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why.
...
Foreign Key to non-primary key
...
answered Aug 26 '13 at 0:36
Ian PrestonIan Preston
35.2k77 gold badges8484 silver badges8686 bronze badges
...
RegEx to make sure that the string contains at least one lower case char, upper case char, digit and
...
|
edited Jul 21 '18 at 18:02
Community♦
111 silver badge
answered Oct 13 '09 at 12:03
...
How to display double quotes(") Symbol in a TextView?
...
192
In the strings.xml, you can simply escape special characters (eg double quotes) with a backslash...
Count the number of occurrences of a string in a VARCHAR field?
...
answered Sep 10 '12 at 2:56
yannisyannis
5,13755 gold badges3636 silver badges4444 bronze badges
...
Why would one use nested classes in C++?
...
230
Nested classes are cool for hiding implementation details.
List:
class List
{
public:
...
How do I make Vim do normal (Bash-like) tab completion for file names?
...
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Feb 9 '09 at 2:02
michaelmichael...
Why can't the C# constructor infer type?
...re near high enough on the list to actually get implemented.
UPDATE March 2015
The proposed feature made it close enough to the top of the list for C# 6 to be specified and designed, but was then cut.
share
|
...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...
12 Answers
12
Active
...