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What is the difference between 'E', 'T', and '?' for Java generics?
...which is used when providing a type argument, e.g. List<?> foo = ... means that foo refers to a list of some type, but we don't know what.
All of this is generics, which is a pretty huge topic. You may wish to learn about it through the following resources, although there are more available o...
NullPointerException accessing views in onCreate()
...tion is to move the code to the fragment onCreateView(), calling findViewById() on the inflated fragment layout rootView:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, cont...
What should go into an .h file?
...efinition rather loosly and somewhat interchangably. But they have precise meanings in C++. Examples: A class declaration introduces a name of a class but doesn't say what's in it. A class definition lists all members and friend functions. Both can be put into header files without problems. What you...
Hash collision in git
...... 160 bits. Now we know 10 bits is approximately 1000 (1024 to be exact) meaning that there are 1 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 different SHA-1 hashes... 1048.
What is this equivalent of? Well the Moon is made up of about 1047 atoms. So if we have 10 Moons... and ...
Python: Is it bad form to raise exceptions within __init__?
...r is not called if an exception is thrown in the constructor of an object (meaning that the initialization of the object is incomplete). This is often not the case in scripting languages, such as Python. For example, the following code throws an AttributeError if socket.connect() fails:
class Netwo...
What does the PHP error message “Notice: Use of undefined constant” mean?
...
well I mean that no need to quote array keys. one have to quote strings, not array keys. a key don't require no special quoting.
– Your Common Sense
Nov 6 '11 at 11:40
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Change Active Menu Item on Page Scroll?
...ll position
var fromTop = $(this).scrollTop()+topMenuHeight;
// Get id of current scroll item
var cur = scrollItems.map(function(){
if ($(this).offset().top < fromTop)
return this;
});
// Get the id of the current element
cur = cur[cur.length-1];
var id = cur &am...
Proper usage of Optional.ifPresent()
...ricky
Just because Oracle has added the Optional class in Java 8 doesn't mean that this class must be used in all situation.
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Android - Set fragment id
How can I set a Fragment 's Id so that I can use getSupportFragmentManager().findFragmentById(R.id.--) ?
7 Answers
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CMake: Project structure with unit tests
... you'd need to call add_test from the top-level CMakeLists.txt. This also means you have to use the more verbose form of add_test since your test exe isn't defined in the same CMakeLists.txt
In your case, since you're running cmake in the root folder, your build tree and your source tree are one a...