大约有 23,000 项符合查询结果(耗时:0.0492秒) [XML]
Why does “pip install” inside Python raise a SyntaxError?
...r path. Add C:\Python32\scripts to your PATH. Change the path as necessary based on where you installed it.
– wkl
Dec 18 '11 at 0:14
4
...
differences between 2 JUnit Assert classes
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
How can I define a composite primary key in SQL?
...
In Oracle database we can achieve like this.
CREATE TABLE Student(
StudentID Number(38, 0) not null,
DepartmentID Number(38, 0) not null,
PRIMARY KEY (StudentID, DepartmentID)
);
...
In Maven 2, how do I know from which dependency comes a transitive dependency?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
Squash the first two commits in Git? [duplicate]
With git rebase --interactive <commit> you can squash any number of commits together into a single one.
9 Answers
...
How do I convert from stringstream to string in C++?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
Difference between a user and a schema in Oracle?
...cally -- A schema is the set of metadata (data dictionary) used by the database,
typically generated using DDL. A schema defines attributes of the database, such as
tables, columns, and properties. A database schema is a description of the data in a
database.
...
What's the state of the art in email validation for Rails?
...] || "is not an email")
end
end
end
class Person < ActiveRecord::Base
validates :email, presence: true, email: true
end
share
|
improve this answer
|
follow
...
how to make svn diff show only non-whitespace line changes between two revisions
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
jQuery empty() vs remove()
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...