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Do I need to heartbeat to keep a TCP connection open?
...
Also, if you connection is going through a proxy you can expect your connection to be dropped if considered stale. I don't think that keep alive would help in this case though, because this aspect of tcp doesn't propagate to the ap...
How do I increase the number of displayed lines of a Java stack trace dump?
...n exception Bar, and throws Bar. Then Foo's stack trace will be shortened. If you for some reason want the full trace, all you need to do is take the last line before the ... in Foo's stack trace and look for it in the Bar's stack trace; everything below that line is exactly what would have been pri...
How to select only the first rows for each unique value of a column
...
A very simple answer if you say you don't care which address is used.
SELECT
CName, MIN(AddressLine)
FROM
MyTable
GROUP BY
CName
If you want the first according to, say, an "inserted" column then it's a different query
SELECT
...
Find out if string ends with another string in C++
How can I find out if a string ends with another string in C++?
20 Answers
20
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CleanWPPAllFilesInSingleFolder error makes my project no longer load
...s issue is caused by using the Preview feature of the new Publish window. If I skip the preview, it seems to work.
– gregpakes
Jun 26 '13 at 9:40
...
TemplateDoesNotExist - Django Error
...o me. Note that command will upgrade to a maybe incompatible version (even if your setup.py and/or requirements.txt says otherwise). You can try pip uninstall/install or specify the exact version.
– Jorge Vargas
Jan 21 '15 at 18:24
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Efficiently updating database using SQLAlchemy ORM
...d plain SQL in the same transaction. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session.
So if you say
for c in session.que...
How to make EditText not editable through XML in Android?
...le() because the doc says that the default implementation might be changed if changed.
– Andy
Jun 26 '12 at 18:20
afai...
Catch checked change event of a checkbox
...ype="checkbox" id="something" />
$("#something").click( function(){
if( $(this).is(':checked') ) alert("checked");
});
Edit: Doing this will not catch when the checkbox changes for other reasons than a click, like using the keyboard. To avoid this problem, listen to changeinstead of click.
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Groovy / grails how to determine a data type?
...ss()
You can abbreviate this to someObject.class in most cases. However, if you use this on a Map it will try to retrieve the value with key 'class'. Because of this, I always use getClass() even though it's a little longer.
If you want to check if an object implements a particular interface or e...