大约有 47,000 项符合查询结果（耗时：0.0860秒） [XML]
What exactly is Arel in Rails 3.0?
...
What exactly is Arel in Rails 3.0?
It's an object model for an algebra of relational query operators.
I understand that it is a replacement for ActiveRecord
No, it isn't. It's a replacement for hand-crafting SQL queries in strings. It is a common query l...
How can I change a file's encoding with vim?
...
answered Apr 22 '09 at 16:25
Brian AgnewBrian Agnew
248k3535 gold badges309309 silver badges420420 bronze badges
...
Difference between git pull --rebase and git pull --ff-only
...|
edited Aug 21 '14 at 16:04
answered Aug 21 '14 at 15:57
G...
Difference between and ?
...
160
The system.web section is for configuring IIS 6.0, while the system.webserver version is used to...
What is the different between 'Auto' and '*' when setting width/height for a grid column?
...
202
We're talking in the context of WPF Grid here? My answer will talk about columns, but the same ...
Git SVN error: a Git process crashed in the repository earlier
...
SchwernSchwern
116k2020 gold badges139139 silver badges275275 bronze badges
...
Add characters to a string in Javascript
...
answered Apr 22 '11 at 11:00
BlazesBlazes
4,26522 gold badges1818 silver badges2828 bronze badges
...
Useful example of a shutdown hook in Java?
... volatile boolean keepRunning = true;
In run() you change to
for (int i = 0; i < N && keepRunning; ++i)
writeBatch(pw, i);
In main() you add:
final Thread mainThread = Thread.currentThread();
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() {
keepRu...
How do I create a class instance from a string name in ruby?
...o,c| o.const_get c}
=> Foo::Bar
> clazz.new
=> #<Foo::Bar:0x0000010110a4f8>
share
|
improve this answer
|
follow
|
...
Rails find_or_create_by more than one attribute?
...
answered Jun 15 '10 at 15:31
x1a4x1a4
18.6k44 gold badges3737 silver badges3838 bronze badges
...