大约有 31,100 项符合查询结果（耗时：0.0322秒） [XML]
Relational Database Design Patterns? [closed]
...row lock contention if you're making the tables hold more "cohesive" data? My thinking is that if a large table was servicing writes to 2 kinds of data sets but both are in the same row, this would result in unnecessary lock contention.
– CMCDragonkai
Jul 2 '15...
How to list of all the tables defined for the database when using active record?
...tionAdapters::SchemaStatements#tables. This method is undocumented in the MySQL adapter, but is documented in the PostgreSQL adapter. SQLite/SQLite3 also has the method implemented, but undocumented.
>> ActiveRecord::Base.connection.tables
=> ["accounts", "assets", ...]
See activerecor...
difference between collection route and member route in ruby on rails?
... about adding a "get" without any block? Is it member or collection route? My test showed its collection but with different id variable name.
– lzap
Apr 19 '11 at 15:12
6
...
What is the { get; set; } syntax in C#?
...
Seems like my concern has already been echoed. If you declare this way: "public string Name { get; set; }" and you access this way: g1.Name = "Hip Hop"; - then where is the Object Orientation? I don't even need the so-called "backin...
How can I select item with class within a DIV?
...
Try:
$('#mydiv').find('.myclass');
JS Fiddle demo.
Or:
$('.myclass','#mydiv');
JS Fiddle demo.
Or:
$('#mydiv .myclass');
JS Fiddle demo.
References:
find().
Selector context.
Good to learn from the find() documentatio...
How can I time a code segment for testing performance with Pythons timeit?
...eit does automatically when you set its number argument)
import time
def myfast():
code
n = 10000
t0 = time.time()
for i in range(n): myfast()
t1 = time.time()
total_n = t1-t0
In Windows, as Corey stated in the comment, time.clock() has much higher precision (microsecond instead of second) ...
How to get current foreground activity context in android?
Whenever my broadcast is executed I want to show alert to foreground activity.
14 Answers
...
How to remove .htaccess password protection from a subdirectory
I have password protected my entire website using .htaccess but I would like to expose one of the sub directories so that it can be viewed without a password.
...
Java ArrayList replace at specific index
...tatic as ArrayList.set(); but when you call it on your own list, it's not: myArrayList.set(int, E);
– whitfin
Aug 25 '13 at 3:39
...
ASP.NET MVC 4 Custom Authorize Attribute with Permission Codes (without roles)
...les, only privilege levels for CRUD operation levels assigned to users) in my MVC 4 application.
4 Answers
...