大约有 47,000 项符合查询结果（耗时：0.0571秒） [XML]
Rails migration: t.references with alternative name?
...
You can do this all in the initial migration/column definition (at least currently in Rails 5):
t.references :transferable_as, index: true, foreign_key: {to_table: :courses}
t.references :same_as, index: true, foreign_key: {to_table: :courses}
...
Update relationships when saving changes of EF4 POCO objects
... relationship, lets say between BlogPost and Tag entities. This means that in my T4 generated POCO BlogPost class I have:
5...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...mongoexport具体用法如下所示：
[root@localhost mongodb]# ./bin/mongoexport --help
Export MongoDB data to CSV, TSV or JSON files.
options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times for more
...
Returning http status code from Web Api controller
I'm trying to return a status code of 304 not modified for a GET method in a web api controller.
13 Answers
...
MySql: Tinyint (2) vs tinyint(1) - what is the difference?
I knew boolean in mysql as tinyint (1) .
4 Answers
4
...
New line in text area
I tried both but new line is not reflecting while rendering the html file.
How can I do that?
12 Answers
...
spring scoped proxy bean
Can someone explain the usage of the spring @ScopedProxy annotation? I thought it had something to do with session scoped beans, but I'm not quite sure what.
...
Can someone explain the traverse function in Haskell?
I am trying and failing to grok the traverse function from Data.Traversable . I am unable to see its point. Since I come from an imperative background, can someone please explain it to me in terms of an imperative loop? Pseudo-code would be much appreciated. Thanks.
...
Android soft keyboard covers EditText field
...
Are you asking how to control what is visible when the soft keyboard opens? You might want to play with the windowSoftInputMode. See developer docs for more discussion.
...
Selecting only first-level elements in jquery
How can I select the link elements of only the parent <ul> from a list like this?
10 Answers
...