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C++ equivalent of java's instanceof
...rounds is putting the special behaviour for the class you are checking for into a virtual function on the base class or perhaps introducing something like a visitor where you can introduce specific behaviour for subclasses without changing the interface (except for adding the visitor acceptance inte...
How to save picture to iPhone photo library?
... to it like so
-(void) saveMePlease {
//Loop through the array here
for (int i=0:i<[arrayOfPhotos count]:i++){
NSString *file = [arrayOfPhotos objectAtIndex:i];
NSString *path = [get the path of the image like you would in DOCS FOLDER or whatever];
NSString *imagePath...
Get PHP class property by string
...$prop;
Or, if you have control over the class, implement the ArrayAccess interface and just do this
echo $obj['Name'];
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How do you change the datatype of a column in SQL Server?
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This only works if you don't have constraints and indexes on that column, otherwise, you need to drop everything and recreate it, which is tedious and grunt work, especially if you have many foreign references on that column. e.g. when changing from tinyint to int.
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Automatic popping up keyboard on start Activity
...in your layout tag in XML file:
android:focusable="true"
android:focusableInTouchMode="true"
As reported by other members in comments it doesn't works on ScrollView therefore you need to add these attributes to the main child of ScrollView.
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Default constructor with empty brackets
...hat is known as "C++'s most vexing parse". Basically, anything that can be interpreted by the compiler as a function declaration will be interpreted as a function declaration.
Another instance of the same problem:
std::ifstream ifs("file.txt");
std::vector<T> v(std::istream_iterator<T>...
How do I find the duplicates in a list and create another list with them?
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converting your answer for set() to get duplicates only. seen = set() then dupe = set(x for x in a if x in seen or seen.add(x))
– Ta946
Apr 7 '19 at 7:41
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PHP script - detect whether running under linux or Windows?
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Turned this into a function: function is_linux(){return (DIRECTORY_SEPARATOR == '/') ? true : false;}
– Mario Lurig
Oct 6 '17 at 0:25
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base64 encoded images in email signatures
...should have this:
<img src="cid: 111122223333">
There's no need to convert the byte array to Base64 because Commons Mail does the conversion for you automatically. Hope this helps.
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Linux c++ error: undefined reference to 'dlopen'
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I have run into the same problem... I added the compiler flag under Project>Properties>C/C++Build>Settings>(My Linker)>Miscellaneous in the Linker flags text field. It did nothing.
– MirroredFate
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