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Threading in a PyQt application: Use Qt threads or Python threads?
...ode executed within the context of a QT thread still acquires the GIL, and now you have to manage two sets of logic for locking your code.
In the end, both QT threads and Python threads are wrappers around system threads. Python threads are marginally safer to use, since those parts that are not wr...
What is an uninterruptible process?
...
@ddaa I do know Linux is not a microkernel, though I am not sure what part of my comment relates to it... And then, does your comment mean that a microkernel OS does not have a problem with those "uninterruptible" processes? Because if i...
Is C++ context-free or context-sensitive?
...ble undertaking. Even writing a C++ program is difficult, and as far as I know none have been proven correct. This is why the standard does not attempt to provide a complete formal grammar, and why it chooses to write some of the parsing rules in technical English.
What looks like a formal grammar ...
javax.faces.application.ViewExpiredException: View could not be restored
...alidate() in server, or due a server specific bug with session cookies as known in WildFly), then the serialized view state is not available anymore in the session and the enduser will get this exception. To understand the working of the session, see also How do servlets work? Instantiation, session...
Escaping single quote in PHP when inserting into MySQL [duplicate]
...y is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This means that strings gathered from $_GET, $_POST and $_COOKIES are escaped for you (i.e., "O'Brien" -> "O\'Brien").
Once you store the data, and subsequently retrieve it again, the string you get b...
Flags to enable thorough and verbose g++ warnings
...re present:
I include -Wno-unused because I often have variables that I know I
will use later, but do not yet have the functionality written for.
Removing warnings about that allows me to write in my preferred style
of occasionally deferring the implementation of things. It is useful
to turn that ...
Xcode 4.4 error - Timed out waiting for app to launch
...
I had same problem now I resolved it ..
Follow these step to sort out the problem.
Step:1 Go to xcode folder like this
Step2: Reach to folder xcode->DerivedData
Step3: Delete all folder inside of DerivedData
It will work for you Tha...
Generating an Excel file in ASP.NET [closed]
...
Cons:
Limited compatibility outside Excel 2007 (shouldn't be a problem nowadays)
Complicated unless you're using a third party component
SpreadSheetML (open format XML)
Pros:
Simple compared to native Excel formats
Supports most Excel features: formating, styles, formulas, multiple sheets ...
Are getters and setters poor design? Contradictory advice seen [duplicate]
... more cognitively intense
object.setField(value);
where the client must now check the getter/setter method to see if it has any side-effects.
Second, if you really need to do something else in the method, why call it a get/set method when it's got more responsibilities than simply getting or set...
What does enctype='multipart/form-data' mean?
... then you need to start worrying about the format. You might also want to know about it for interest's sake.
application/x-www-form-urlencoded is more or less the same as a query string on the end of the URL.
multipart/form-data is significantly more complicated but it allows entire files to be i...