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Python __str__ versus __unicode__
...by side with __str__.
class A :
def __init__(self) :
self.x = 123
self.y = 23.3
#def __str__(self) :
# return "STR {} {}".format( self.x , self.y)
def __unicode__(self) :
return u"UNICODE {} {}".format( self.x , self.y)
a1 = A()
a2 = A()
...
UPDATE and REPLACE part of a string
... so the following should work:
UPDATE dbo.xxx
SET Value = REPLACE(Value, '123\', '')
WHERE ID <=4
(I also added the \ in the replace as I assume you don't need that either)
share
|
improve thi...
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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...
项目管理实践【三】每日构建【Daily Build Using CruiseControl.NET and MS...
...了。
您可以查看这个系列的全部文章：项目管理实践入门系列教程
项目管理 构建 CruiseControl NET MSBuild
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...
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...
VR硬件行业洗牌进行时 70%创业公司倒闭转行做内容 - 资讯 - 清泛网 - 专注C...
...买一个VR眼镜，这个门槛多低。就像手机也分三个级别：入门、中端、高端，即使高端体验更佳，也不妨碍低端市场盈利，况且对于首次接触VR的人来说，很难说会不会花几千元买一个头显，但是如果成本不到100元，那么用户群...