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Strings as Primary Keys in SQL Database [closed]
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Technically yes, but if a string makes sense to be the primary key then you should probably use it. This all depends on the size of the table you're making it for and the length of the string that is going to be the primary key (lo...
How to reference a .css file on a razor view?
...tyles" section defined in your view. If true, the view won't render and an error will be thrown unless the "Styles" section has been defined.
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How to make shallow git submodules?
...t 5dd1d59, 10 Dec 2019)
submodule--helper: advise on fatal alternate error
Signed-off-by: Jonathan Tan
Acked-by: Jeff King
When recursively cloning a superproject with some shallow modules defined in its .gitmodules, then recloning with "--reference=<path>", an error occurs. ...
How to do URL decoding in Java?
... character encoding,this makes a great article too balusc.blogspot.in/2009/05/unicode-how-to-get-characters-right.html
– crackerplace
Jul 16 '14 at 20:32
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Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
...er may have the wrong class in your xib.
I downloaded your project.
The error you are getting is
'NSUnknownKeyException', reason: '[<UIViewController 0x3927310> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key string.'
It is caused by the Second vi...
Why use static_cast(x) instead of (int)x?
...Other;
pOther = static_cast<CMyOtherStuff*>(pSomething); // Compiler error: Can't convert
pOther = (CMyOtherStuff*)(pSomething); // No compiler error.
// Same as reinterpret_cast<>
...
What is the difference between C++ and Visual C++? [duplicate]
...979 at Bell Labs as an enhancement to the C programming language and originally named "C with Classes". It was renamed to C++ in 1983.
C++ is widely used in the software industry. Some of its application domains include systems software, application software, device drivers, embedded software, high...
Why is Scala's immutable Set not covariant in its type?
...ameter of type A due to the contravariance of functions. Set could potentially be contravariant in A, but this too causes issues when you want to do things like this:
def elements: Iterable[A]
In short, the best solution is to keep things invariant, even for the immutable data structure. You'll...
Writing string to a file on a new line every time
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as suggested by another answer, but why using string concatenation (slow, error-prone) when you can call file.write twice:
file.write(your_string)
file.write("\n")
note that writes are buffered so it amounts to the same thing.
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Why should we typedef a struct so often in C?
...ype
name. Given the definition above,
declarations such as
s x; /* error in C */
s *p; /* error in C */
are errors in C. You must write them
as
struct s x; /* OK */
struct s *p; /* OK */
The names of unions and enumerations
are also tags rather than types.
In C...