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Is returning by rvalue reference more efficient?
...g a temporary Beta_ab object into the return value of the function. If the compiler can, it will avoid the move altogether, by using RVO (return value optimization). Now, you can do the following
Beta_ab ab = others.toAB();
And it will move construct the temporary into ab, or do RVO to omit doing...
Adding devices to team provisioning profile
...e, however I do not physically have the device so I can't hook it up to my computer so Xcode can't add the UDID to my devices and to the team provisioning profile. Is there a way to add it manually to the team provisioning profile, I can't figure out how to edit it. Also when I add the device in m...
Using git commit -a with vim
...sing Esc).
You close your file with :q while in the normal mode.
You can combine both these actions and do Esc:wqEnter to save the commit and quit vim.
As an alternate to the above, you can also press ZZ while in the normal mode, which will save the file and exit vim. This is also easier for some...
Sqlite LIMIT / OFFSET query
...nt>
Is equivalent to:
LIMIT <count> OFFSET <skip>
It's compatible with the syntax from MySQL and PostgreSQL. MySQL supports both syntax forms, and its docs claim that the second syntax with OFFSET was meant to provide compatibility with PostgreSQL. PostgreSQL docs show it only ...
How to step through Python code to help debug issues?
...db by using pdb myscript.py or python -m pdb myscript.py.
There are a few commands you can then issue, which are documented on the pdb page.
Some useful ones to remember are:
b: set a breakpoint
c: continue debugging until you hit a breakpoint
s: step through the code
n: to go to next line of co...
Convert a list of objects to an array of one of the object's properties
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How to concatenate strings with padding in sqlite
...t you can follow along (basically what I proposed) here: http://verysimple.com/2010/01/12/sqlite-lpad-rpad-function/
-- the statement below is almost the same as
-- select lpad(mycolumn,'0',10) from mytable
select substr('0000000000' || mycolumn, -10, 10) from mytable
-- the statement below is al...
What's a good IDE for Python on Mac OS X? [closed]
... TDD and refactoring, and whose primary development language is Python. I come from the Java world, and have been a confident user of Eclipse for a good, long time. When not working in Java, I use emacs.
...
How can I set the text of a WPF Hyperlink via data binding?
...ve got to explicitly use a TextBlock.
<TextBlock>
<Hyperlink Command="local:MyCommands.ViewDetails" CommandParameter="{Binding}">
<TextBlock Text="{Binding Path=Name}"/>
</Hyperlink>
</TextBlock>
Update: Note that as of .NET 4.0 the Run.Text propert...
How to integrate nodeJS + Socket.IO and PHP?
I have recently been looking around, to find a good way to communicate between nodeJS and PHP. Here is the idea : nodeJS is still quite new, and it can be kind of tricky to develop a full application only with it. Moreover, you may need it only for one module of your project, like realtime notificat...