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Separation of business logic and data access in django
... if User.objects.get(pk=user_id).active:
raise ValidationError("This user cannot be activated")
# you can also check authorizations etc.
return user_id
def execute(self):
"""
This is not a standard method in the forms API; it is intended to rep...
What is “rvalue reference for *this”?
...-value. So if this is in the type Object:
Object foo;
foo.RValueFunc(); //error: no `RValueFunc` version exists that takes `this` as l-value.
Object().RValueFunc(); //calls the non-const, && version.
This way, you can specialize behavior based on whether the object is being accessed via a...
What encoding/code page is cmd.exe using?
...etConsoleOutputCP();
if (!SetConsoleOutputCP(65001)) {
printf("error\n");
}
freopen("uc-test-UTF-8-nobom.txt", "rb", stdin);
n = fread(buf, sizeof(buf[0]), sizeof(buf), stdin);
fwrite(buf, sizeof(buf[0]), n, stdout);
SetConsoleOutputCP(oldCodePage);
return 0;
}...
Is it possible to use Java 8 for Android development?
...d buildConfig.java files and it will not display any red dots which denote errors related to the resource files of the project.
Create a new Run Configuration for your Android target platform by right-clicking on the project and then selecting Run As -> Run Configurations. For instance, this de...
Protect .NET code from reverse engineering?
... just work when you install it on a new second machine. You'll want a good error message to prevent extra support calls, but don't spend extra time making it too hard to work around and don't hit users over the head with it.
Another example is a time-limited trial. Don't even worry about simple thi...
Why would I use Scala/Lift over Java/Spring? [closed]
...reaming the response. The benefits are resistance to cross site scripting errors, the ability to move CSS tags to the head and scripts to the bottom of the page after the page has been composed, and the ability to rewrite the page based on the target browser. On the input side, URLs can be re-writ...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...iting for a fix which does not appear to be forthcoming. Apologies for the error.)
So, to repeat the question:
The C# compiler could have been made to compile nested lambda expressions into an expression tree involving Expression.Constant() instead of Expression.Quote(), and any LINQ query prov...
Auto Scale TextView Text to Fit within Bounds
...btracting 1 from the line index was intentional and I added a comment. The error you got was probably from when there was not enough height to render even one line of text. I added a check and cleared the text in that case. (I work in Shibuya so I'd be up for a beer anytime :)
–...
Java 256-bit AES Password-Based Encryption
...ate my own key? I have tried padding it out to 256 bits, but then I get an error saying that the key is too long. I do have the unlimited jurisdiction patch installed, so thats not the problem :)
...
What techniques can be used to speed up C++ compilation times?
...is over. On some compilers, such as GCC, this might ICE (Internal Compiler Error) your compiler for lack of memory. So don't use this technique unless you know all the pros and cons.
Precompiled headers
Precompiled headers (PCHs) can save you a lot of time in compilation by compiling your header fil...