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Elegant solution to duplicate, const and non-const, getters? [duplicate]
...nst, and casting away the const is allowed.
class Foo
{
public:
const int& get() const
{
//non-trivial work
return foo;
}
int& get()
{
return const_cast<int&>(const_cast<const Foo*>(this)->get());
}
};
...
Download a single folder or directory from a GitHub repo
...ia SVN. If you checkout your code with subversion, Github will essentially convert the repo from git to subversion on the backend, then serve up the requested directory.
Here's how you can use this feature to download a specific folder. I'll use the popular javascript library lodash as an example.
...
Nullable ToString()
...also protects you from nulls. For ToString() it's not necessary (as you pointed out) but for default int values (for example) it works nicely, e.g.:
int page = currentPage ?? 1;
that lets you do all the integer operations on page w/o first explicitly null checking and calling for the value in cu...
Resolve Type from Class Name in a Different Assembly
...iedName}");
string typeName = match.Groups["name"].Value;
int n = int.Parse(match.Groups["count"].Value);
string asmName = match.Groups["assembly"].Value;
string subtypes = match.Groups["subtypes"].Value;
typeName = typeName + $"`{n}";
Type genericTy...
Android: How to handle right to left swipe gestures
...reListener extends SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
publi...
Find and extract a number from a string
...string and use Char.IsDigit
string a = "str123";
string b = string.Empty;
int val;
for (int i=0; i< a.Length; i++)
{
if (Char.IsDigit(a[i]))
b += a[i];
}
if (b.Length>0)
val = int.Parse(b);
share
...
Auto increment primary key in SQL Server Management Studio 2012
...
Make sure that the Key column's datatype is int and then setting identity manually, as image shows
Or just run this code
-- ID is the name of the [to be] identity column
ALTER TABLE [yourTable] DROP COLUMN ID
ALTER TABLE [yourTable] ADD ID INT IDENTITY(1,1)
th...
self referential struct definition?
...ll as it becomes a never-ending recursion.
However a Cell CAN contain a pointer to another cell.
typedef struct Cell {
bool isParent;
struct Cell* child;
} Cell;
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...
I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
... public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Or if you are using ButterKnife:
@OnItemSelected(R.id.spinner)
public void onSp...
DefaultInlineConstraintResolver Error in WebAPI 2
...othing else is specified.
As the error indicates, the DefaultInlineConstraintResolver that Web API ships with does not have an inline constraint called string. The default supported ones are the following:
// Type-specific constraints
{ "bool", typeof(BoolRouteConstraint) },
{ "datetime", typeof(D...