大约有 2,700 项符合查询结果(耗时:0.0245秒) [XML]
Amazon S3 boto - how to create a folder?
... folders or directories in S3. You can create file names like "abc/xys/uvw/123.jpg", which many S3 access tools like S3Fox show like a directory structure, but it's actually just a single file in a bucket.
share
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
...
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....
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...
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...
CDHtmlDialog的基本使用(JS调用C++函数的实现) - C/C++ - 清泛网 - 专注IT技能提升
...eturn TRUE;
}
这样,直接允许访问内部函数,绕过确认。
源码点此下载。
反过来,C++调用Js代码,请看下篇《CDHtmlDialog的基本使用(C++调用JS函数的实现)》。
ATL COM开发入门(二)(ActiveX/COM组件回调JS) - C/C++ - 清泛网 - 专注C/C++及内核技术
...的例子,参见《ATL创建的ActiveX(COM组件)实现JS回调》。
源码点此下载,如有问题请点此。
ATL COM ActiveX 入门 JS回调