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MySQL SELECT WHERE datetime matches day (and not necessarily time)
...ws, including those, that don't match
it will make it impossible to use an index for the query
It is much faster to use
SELECT * FROM tablename
WHERE columname BETWEEN '2012-12-25 00:00:00' AND '2012-12-25 23:59:59'
as this will allow index use without calculation.
EDIT
As pointed out by Use...
Synchronise ScrollView scroll positions - android
...est;
import android.app.Activity;
import android.os.Bundle;
public class Q3948934 extends Activity implements ScrollViewListener {
private ObservableScrollView scrollView1 = null;
private ObservableScrollView scrollView2 = null;
@Override
protected void onCreate(Bundle savedInsta...
What is the meaning of the 'g' flag in regular expressions?
...n:
> 'aaa'.match(/a/g)
[ 'a', 'a', 'a' ]
> 'aaa'.match(/a/)
[ 'a', index: 0, input: 'aaa' ]
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Capturing Groups From a Grep RegEx
...ved to an array called $BASH_REMATCH. The first capture group is stored in index 1, the second (if any) in index 2, etc. Index zero is the full match.
You should be aware that without anchors, this regex (and the one using grep) will match any of the following examples and more, which may not be wh...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
... StockCode{get;set;}
//该次请求的股票名称
public string Index { get; set; }
//该次请求Excel分配的TopicID
public int TopicId { get; set; }
//该次请求的返回值
public object Value{get;set;}
}
3.2 创建RTD
如何创建RTD函数是本文的重点...
How to remove text from a string?
... string.
You can make the following function to remove characters at start index to the end of string, just like the c# method first overload String.Remove(int startIndex):
function Remove(str, startIndex) {
return str.substr(0, startIndex);
}
and/or you also can make the following function t...
Filtering a list based on a list of booleans
...ic way to iterate over multiple sequences in parallel, without needing any indexing. This assumes both sequences have the same length (zip stops after the shortest runs out). Using itertools for such a simple case is a bit overkill ...
One thing you do in your example you should really stop doing i...
What components are MVC in JSF MVC framework?
...e to choose
Passing a JSF2 managed pojo bean into EJB or putting what is required into a transfer object
Filter do not initialize EntityManager
javax.persistence.TransactionRequiredException in small facelet application
In the book The Definitive Guide to JSF in Java EE 8, in chapter 8 "Backing be...
Why does Python use 'magic methods'?
...e FAQ:
Why does Python use methods for some
functionality (e.g. list.index()) but
functions for other (e.g. len(list))?
The major reason is history. Functions
were used for those operations that
were generic for a group of types and
which were intended to work even for
objects t...
How can I access my localhost from my Android device?
...rst find out your router external IP address (https://www.google.de/search?q=myip)
then, on the router, forward some port to <your desktop IP>:<server port number>
finally use the external IP address and forwarded port
Otherwise use something like xip.io or ngrok.
NOTE: The ifconfig c...