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std::auto_ptr to std::unique_ptr
...ou cannot do a global find/replace because you can copy an auto_ptr (with known consequences), but a unique_ptr can only be moved. Anything that looks like
std::auto_ptr<int> p(new int);
std::auto_ptr<int> p2 = p;
will have to become at least like this
std::unique_ptr<int> p(n...
Renaming table in rails
... table (or SQLite or PostgreSQL, depending on what database you're using). Now, as it happens, ActiveRecord::ConnectionAdapters::MysqlAdapter is already accessible through Model.connection, so you should be completely able to do Model.connection.rename_table, using any model in your application.
[/E...
Efficiency of premature return in a function
...rogrammer cannot decide what is better a priori unless he has an intimate knowledge of the CPU architecture.
– fortran
Oct 25 '11 at 9:26
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Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...er, paste this
[{ "keys": [ "f12" ], "command": "view_in_browser" }]
now F12 will be your shortcut key.
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Focus-follows-mouse (plus auto-raise) on Mac OS X
...pps you can do this:
defaults write com.apple.x11 wm_ffm -bool true
In Snow Leopard, use this instead:
defaults write org.x.X11 wm_ffm -bool true
Apparently there's a program called CodeTek Virtual Desktop that'll emulate it systemwide, but it costs $$ (and they never got a version out for OSX...
Is it possible to dynamically compile and execute C# code fragments?
...e future all existing client-supplied classes that implement the interface now become abstract, meaning you won't be able to compile or instantiate the client-supplied class at runtime.
I had this issue when it came time to add a new method after about 1 year of shipping the old interface and after...
What data is stored in Ephemeral Storage of Amazon EC2 instance?
...aunch a new instance based on that AMI it will contain everything as it is now.
Update: to clarify based on comments by mattgmg1990 and glenn bech:
Note that there is a difference between "stop" and "terminate". If you "stop" an instance that is backed by EBS then the information on the root volu...
Update one MySQL table with values from another
...), so I took your and noodl's advice about the indexes and the whole query now finishes in under a second. I can't believe the difference!? Thanks so much for your help; I've learnt a lot!
– Superangel
Apr 20 '11 at 13:47
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SQL Server dynamic PIVOT query?
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Cool! Do you know of a way to add a prefix to the value column names - so you have a result with columns: date, Amount_ABC, Amount_DEF, Amount_GHI? I am asking, because I would like to join an additional value column to it and then I would...
fatal: Not a valid object name: 'master'
...doesn't contain a working copy, so the git branch command is not useful).
Now, the reason you wouldn't have a master branch even after doing a git init is that there are no commits: when you create your first commit, you will then have a master branch.
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