大约有 2,800 项符合查询结果（耗时：0.0138秒） [XML]
Meaning of epsilon argument of assertEquals for double values
...nal double DELTA = 1e-15;
@Test
public void testDelta(){
assertEquals(123.456, 123.456, DELTA);
}
If you're using hamcrest assertions, you can just use the standard equalTo() with two doubles (it doesn't use a delta). However if you want a delta, you can just use closeTo() (see javadoc), e.g....
Making code internal but available for unit testing from other projects
...
If you're using .NET, the InternalsVisibleTo assembly attribute allows you to create "friend" assemblies. These are specific strongly named assemblies that are allowed to access internal classes and members of the other assembly.
Note, this should be used with d...
SQLAlchemy IN clause
...
How about
session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two parameters...
Truncate number to two decimal places without rounding
...2.55
2.99999 => 2.99
4.27 => 4.27
15.7784514 => 15.77
123.5999 => 123.59
0.000000199 => 1.99 *
* As mentioned in the note, that's due to javascript implicit conversion into exponential for "1.99e-7"
And for some other values of n:
15.001097 => 15.0010 (n=4)
0.00...
How do I return to an older version of our code in Subversion?
...nd the right revision number.
Note down the good revision number (assuming 123 for examples below).
Update to the latest revision:
svn update
Undo all the changes between the revision you want and the latest version:
svn merge -r HEAD:123 .
svn commit "Reverted to revision 123"
(the same as Jon...
A numeric string as array key in PHP
Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer?
11 A...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
... It doesn't work on nexus 4. can you please tell how to overcome this problem. I have almost tried everything. Thanks.
– Shah
Feb 27 '15 at 19:45
3
...
redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升
...化显示，同时它支持多项目管理。Redmine是一个自由开放源码软件的解决方案，它提供集成的项目管理功能，问题跟踪，并为多个版本控制的选项的支持。
二、模块介绍
1.概述
该页面提供一个关于该项目的总体概述。其中问题...
Swift 和 .Net 开源，回顾 2015 年 9 大开源事件 - 开源 & Github - 清泛网 - 专注IT技能提升
...得开发者的注意力。这两个项目是在麻省理工学院的开放源码许可证下发布的，该公司还为其 Azure 云上的一个网络交换机开发了一个基于 Linux 的操作系统。
3、富士通开源自己产品
富士通使用 Linux 已经几十年了，同时也致...
国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术
...ang 应是第 7 回。
虽然主办方目前还没有公布这次比赛的源码，但可以围观他俩之前的作品。
Best self documenting program (2011/hou/hou.c)
Best use of 1 Infinite Loop (2013/hou/hou.c)
Don Yang，Google 工程师
2004/omoikane.c
omoikane —&ra...