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What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?
What is the difference between CrudRepository and JpaRepository interfaces in Spring Data JPA ?
6 Answers
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How to force ViewPager to re-instantiate its items [duplicate]
...hat they are no longer valid or needs to be refreshed? I tried to call notifyDataSetChanged() on its adapter but this does not invoke instantiateItem() method again.
...
Python setup.py develop vs install
...stall (typically third party) packages that you're not going to develop/modify/debug yourself.
For your own stuff, you want to first install your package and then be able to frequently edit the code without having to re-install the package every time — and that is exactly what python setup.py dev...
View inside ScrollView doesn't take all place
...nt when using a ScrollView. After all, the ScrollView would become useless if its content was always as tall as itself. To work around this, you need to use the ScrollView attribute called android:fillViewport. When set to true, this attribute causes the scroll view’s child to expand to the height...
What does void* mean and how to use it?
...t.
void * is often used in places where you need to be able to work with different pointer types in the same code. One commonly cited example is the library function qsort:
void qsort(void *base, size_t nmemb, size_t size,
int (*compar)(const void *, const void *));
base is the addr...
What does `void 0` mean? [duplicate]
...ndefined
What's the point of that?
It seems pretty useless, doesn't it? If it always returns undefined, what's wrong with just using undefined itself?
In a perfect world we would be able to safely just use undefined: it's much simpler and easier to understand than void 0. But in case you've neve...
Write to .txt file?
...
FILE *f = fopen("file.txt", "w");
if (f == NULL)
{
printf("Error opening file!\n");
exit(1);
}
/* print some text */
const char *text = "Write this to the file";
fprintf(f, "Some text: %s\n", text);
/* print integers and floats */
int i = 1;
float p...
How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to
...itch usually does the trick. However, that is a very useful warning indeed if you care about these things in your project. It becomes annoying when GCC starts to warn you about things not in your code though.
I would recommend you keeping the warning on, but use -isystem instead of -I for include d...
Resolving ambiguous overload on function pointer and std::function for a lambda using +
...ked up by an argument by Daniel Krügler, this unary + trick should be specified behaviour, i.e. you can rely on it (see discussion in the comments).
Still, I'd recommend using an explicit cast to the function pointer type if you want to avoid the ambiguity: you don't need to ask on SO what is does...
What's Go's equivalent of argv[0]?
...guments are exposed in the os package http://golang.org/pkg/os/#Variables
If you're going to do argument handling, the flag package http://golang.org/pkg/flag is the preferred way. Specifically for your case flag.Usage
Update for the example you gave:
func usage() {
fmt.Fprintf(os.Stderr, "us...