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Transaction isolation levels relation with locks on table
...(yes, two tables can be logically but not physically related in real-world apps =\).
READ COMMITTED - lock on committed data. You can read the data that was only committed. This means A writes data and B can't read the data saved by A until A executes a commit. The problem here is that C can update ...
How do I suspend painting for a control and its children?
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At my previous job we struggled with getting our rich UI app to paint instantly and smoothly. We were using standard .Net controls, custom controls and devexpress controls.
After a lot of googling and reflector usage I came across the WM_SETREDRAW win32 message. This really stop...
Remove unused references (!= “using”)
...mblies that are not in use?" The poster wants the assemblies to no longer appear as part of the build output.
In this case, ReSharper can help you identify them, but you have to remove them yourself.
To do this, open up the References inth Solution Browser, right mouse click on each referenced...
How to check if a file exists in Documents folder?
I have an application with In-App Purchase, that when the user buy something, download one html file into the Documents folder of my app.
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In Rails - is there a rails method to convert newlines to ?
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simple_format is security risk if using it for a web app. It relies on Rails interpreting special syntax like javascript:alert(\no!\) as given in the reference. There could be endless variations and future variations for malicious hackers to work with.
– C...
Getting reference to the top-most view/window in iOS application
I'm creating a reusable framework for displaying notifications in an iOS application. I'd like the notification views to be added over the top of everything else in the application, sort of like a UIAlertView. When I init the manager that listens for NSNotification events and adds views in response,...
How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
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Here's a smooth jQuery plugin wrapping up the whole deal (basically the same principles as Nick's answer): http://strd6.com/2011/09/html5-javascript-pasting-image-data-in-chrome/
It's got a live demo, annotated source code, and everything.
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Why do you program in assembly? [closed]
...s. That's E=mc2 in action. Here's a summary.
For all of the above, the applications are not designed or written 100% in assembly -- not even close. But when people really need speed, they focus on writing the key parts of their code to fly on specific hardware.
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Missing return statement in a non-void method compiles
... marked as returning int, but in fact does not return, then you should be happy that the compiler flags this, so you can mark the method as void or fix it if you did not intend for that behaviour.
– MikeFHay
May 28 '13 at 14:37
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Reduce, fold or scan (Left/Right)?
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In general, all 6 fold functions apply a binary operator to each element of a collection. The result of each step is passed on to the next step (as input to one of the binary operator's two arguments). This way we can cumulate a result.
reduceLeft and reduc...