大约有 47,000 项符合查询结果(耗时:0.0616秒) [XML]
Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
...estamp;
timestamp
---------------------
2010-01-01 12:00:00
Now we'll cast it to a date:
wconrad=# select '2010-01-01 12:00:00'::timestamp::date;
date
------------
2010-01-01
On the other hand you can use date_trunc function. The difference between them is that the latter ...
Reading ePub format
...rting out:
parse xml
unzip
To display content just use a UIWebView for now.
Here's a high level step by step for your code:
1) create a view with a UIWebView
2) download the EPUB file
3) unzip it to a subdirectory in your app's documents folder using the zip library, linked above
4) parse t...
Are braces necessary in one-line statements in JavaScript?
... !if
}
The thinking goes that if you always have the brackets then you know to insert other statements inside that block.
share
|
improve this answer
|
follow
...
How do I package a python application to make it pip-installable?
...
'django-profiles',
'django-uni-forms',
],
Obviously now we have two places where dependencies are defined, but that doesn't necessarily mean that these information are duplicated: setup.py vs requirements.txt
With this setup your package should be installable via pip.
As ...
What is the difference between Integrated Security = True and Integrated Security = SSPI?
... difference in that "True" used NTLM and "SSPI" used Kerberos, but they're now interchangeable.
– SqlRyan
Aug 4 '09 at 20:26
5
...
foreach vs someList.ForEach(){}
.... e.g. a block of code for reading rows from a dataReader.
I still don't know exactly why they did this.
The drawbacks of list.ForEach() are:
It is more verbose in C# 2.0. However, in C# 3 onwards, you can use the "=>" syntax to make some nicely terse expressions.
It is less familiar. People ...
How to use glyphicons in bootstrap 3.0
I have already used glyphicons in bootstrap 2.3 but now I have upgraded to bootstrap 3.0. Now, I am unable to use the icon property.
...
Font size in CSS - % or em?
...on /. about that (and lost). I had the same point of view as you, good to know someone shares that pov :)
– Vincent McNabb
Sep 25 '08 at 11:24
12
...
About Java cloneable
...
The first thing you should know about Cloneable is - don't use it.
It is very hard to implement cloning with Cloneable right, and the effort is not worth it.
Instead of that use some other options, like apache-commons SerializationUtils (deep-clone) o...
Extending an Object in Javascript
...for brevity, property assignments are skipped because you get the point by now.
Object.assign(darthVader, Robot)
Darth Vader gets the methods of Robot:
darthVader.greet() // inherited from `Person`, outputs "Hi, my name is Darth Vader..."
darthVader.machineGreet() // inherited from `Robot`, outputs...