大约有 48,000 项符合查询结果（耗时：0.0480秒） [XML]
Spring MVC type conversion : PropertyEditor or Converter?
I am looking for the easiest and simplest way to bind and convert data in Spring MVC. If possible, without doing any xml configuration.
...
How to limit setAccessible to only “legitimate” uses?
...UT THIS???
That depends entirely on what types of programs you're writing and for what kind of an architecture.
If you're distributing a software component called foo.jar to the people of the world, you're completely at their mercy anyway. They could modify the class definitions inside your .jar (...
When to use Common Table Expression (CTE)
I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...
Use space as a delimiter with cut command
I want to use space as a delimiter with the cut command.
8 Answers
8
...
What is the fastest integer division supporting division by zero no matter what the result is?
...
Inspired by some of the comments I got rid of the branch on my Pentium and gcc compiler using
int f (int x, int y)
{
y += y == 0;
return x/y;
}
The compiler basically recognizes that it can use a condition flag of the test in the addition.
As per request the assembly:
.globl...
Alternate output format for psql
...
I just needed to spend more time staring at the documentation. This command:
\x on
will do exactly what I wanted. Here is some sample output:
select * from dda where u_id=24 and dda_is_deleted='f';
-[ RECORD 1 ]------+--------------------------------------------------------------------------...
Condition within JOIN or WHERE
...al algebra allows interchangeability of the predicates in the WHERE clause and the INNER JOIN, so even INNER JOIN queries with WHERE clauses can have the predicates rearrranged by the optimizer so that they may already be excluded during the JOIN process.
I recommend you write the queries in the mo...
What is the convention for word separator in Java package names?
... of a unique package name is always written in all-lowercase ASCII letters and should be one of the top-level domain names, currently com, edu, gov, mil, net, org, or one of the English two-letter codes identifying countries as specified in ISO Standard 3166, 1981.
Subsequent components of the ...
Styling multi-line conditions in 'if' statements? [closed]
...4 spaces on your second conditional line. Maybe use:
if (cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'val3' and cond4 == 'val4'):
do_something
Also, don't forget the whitespace is more flexible than you might think:
if (
cond1 == 'val1' and cond2 == 'val2' and
...
Python csv string to array
Anyone know of a simple library or function to parse a csv encoded string and turn it into an array or dictionary?
10 Answe...