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Why is Class.newInstance() “evil”?
... This is the very nature of reflection in general ... not at all specific to Constructor.newInstance().
– Ryan Delucchi
Oct 24 '08 at 23:35
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How to use if - else structure in a batch file?
...stion about if - else structure in a batch file. Each command runs individually, but I couldn't use "if - else" blocks safely so these parts of my programme doesn't work. How can I do make these parts run? Thank you.
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Clicking the back button twice to exit an activity
...ode uses System.currentTimeMillis(); to store the time onBackPressed() is called;
private static final int TIME_INTERVAL = 2000; // # milliseconds, desired time passed between two back presses.
private long mBackPressed;
@Override
public void onBackPressed()
{
if (mBackPressed + TIME_INTERVAL ...
How can I see the specific value of the sql_mode?
...
The combination modes are all documented here: dev.mysql.com/doc/refman/5.5/en/server-sql-mode.html. For example, here you can see which 7 modes comprise the ORACLE combination mode: dev.mysql.com/doc/refman/5.5/en/…
– Ike Walk...
arrow operator (->) in function heading
...) + std::declval<T2>())
compose(T1 a, T2 b);
except it's getting really verbose now. So the alternate declaration syntax was proposed and implemented and now you can write
template <typename T1, typename T2>
auto compose(T1 a, T2 b) -> decltype(a + b);
and it's less verbose and t...
How do I use raw_input in Python 3
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There was originally a function input() which acted something like the current eval(input()). It was a leftover from when Python was less security conscious. The change simplified the language. See also "import this" for a deeper explanat...
HTML/CSS: Make a div “invisible” to clicks?
...the overlay.
See the first answer to this question:
HTML "overlay" which allows clicks to fall through to elements behind it
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How to have conditional elements and keep DRY with Facebook React's JSX?
How do I optionally include an element in JSX? Here is an example using a banner that should be in the component if it has been passed in. What I want to avoid is having to duplicate HTML tags in the if statement.
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Break or return from Java 8 stream forEach?
... This works if finding an object was the goal, but that goal is usually served by a return statement from a findSomething method. break is more usually associated with a take while-kind of operation.
– Marko Topolnik
Apr 26 '14 at 19:53
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Incrementing in C++ - When to use x++ or ++x?
... i.e., x++ or ++x should only exist on its own line, never as y=x++. Personally, I don't like this, but it's uncommon
– Mikeage
Nov 28 '09 at 16:54
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