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Initialization of all elements of an array to one default value in C++?
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Using the syntax that you used,
int array[100] = {-1};
says "set the first element to -1 and the rest to 0" since all omitted elements are set to 0.
In C++, to set them all to -1, you can use something like std::fill_n (from <algorithm>):
std::fil...
How do I specify a pointer to an overloaded function?
...ich f to use according to the function signature implied by the function pointer type:
// Uses the void f(char c); overload
std::for_each(s.begin(), s.end(), static_cast<void (*)(char)>(&f));
// Uses the void f(int i); overload
std::for_each(s.begin(), s.end(), static_cast<void (*)(int...
How can I update the current line in a C# Windows Console App?
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If you print only "\r" to the console the cursor goes back to the beginning of the current line and then you can rewrite it. This should do the trick:
for(int i = 0; i < 100; ++i)
{
Console.Write("\r{0}% ", i);
}
Notice th...
How to keep onItemSelected from firing off on a newly instantiated Spinner?
..., straightforward place to do this as the layout seems to happen at some point after onResume() and onPostResume(), so all of the normal hooks have completed by the time the layout happens.
– Dan Dyer
Dec 18 '10 at 13:05
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Why does .NET foreach loop throw NullRefException when collection is null?
So I frequently run into this situation... where Do.Something(...) returns a null collection, like so:
11 Answers
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How to edit incorrect commit message in Mercurial? [duplicate]
...evision you want to modify. Choose Modify History->Import MQ. That will convert all the revisions up to and including the selected revision from Mercurial changesets into Mercurial Queue patches. Select the Patch you want to modify the message for, and it should automatically change the screen to...
Initializing a member array in constructor initializer
... have to use braces directly to fire off list initialization
struct A {
int foo[3];
A():foo{1, 2, 3} { }
A():foo({1, 2, 3}) { } /* invalid */
};
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Generate a random alphanumeric string in Cocoa
...EFGHIJKLMNOPQRSTUVWXYZ0123456789";
-(NSString *) randomStringWithLength: (int) len {
NSMutableString *randomString = [NSMutableString stringWithCapacity: len];
for (int i=0; i<len; i++) {
[randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform([letters...
How do I delete everything in Redis?
...ushAll();
}
catch (Exception ex){
System.out.println(ex.getMessage());
}
}
}
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Maintain/Save/Restore scroll position when returning to a ListView
... opens this ListView again, I want the list to be scrolled to the same point that it was previously. Any ideas on how to achieve this?
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