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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
... arrays, which do allow that type of covariance:
Object[] objects = new String[10];
objects[0] = Boolean.FALSE;
That code compiles fine, but throws a runtime error (java.lang.ArrayStoreException: java.lang.Boolean in the second line). It is not typesafe. The point of Generics is to add the co...
How can you profile a Python script?
...ll filename:lineno(function)
1 0.000 0.000 0.061 0.061 <string>:1(<module>)
1000 0.051 0.000 0.051 0.000 euler048.py:2(<lambda>)
1 0.005 0.005 0.061 0.061 euler048.py:2(<module>)
1 0.000 0.000 0.061 0.061 {execfile}...
Implementing two interfaces in a class with same method. Which interface method is overridden?
...interface Presentable extends Gift, Guest { }
public static void main(String[] args) {
Presentable johnny = new Presentable() {
@Override public void present() {
System.out.println("Heeeereee's Johnny!!!");
}
};
johnny.present(); ...
Inline code in org-mode
...example, I think of inline code as a file name, a short (< 1 line) code string, usually embedded in other text.
– James
Jan 21 '19 at 16:44
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...
Piping both stdout and stderr in bash?
...and stderr, 2>&1 redirects stderr back to stdout and grep sees both strings on stdin, thus filters out both.
You can read more about redirection here.
Regarding your example (POSIX):
cmd-doesnt-respect-difference-between-stdout-and-stderr 2>&1 | grep -i SomeError
or, using >=ba...
Android Studio: Plugin with id 'android-library' not found
...classpath 'com.android.tools.build:gradle:1.1.1'
}
}
Replace version string 1.0.+ with the latest version. Released versions of Gradle plugin can be found in official Maven Repository or on MVNRepository artifact search.
...
What is the difference between ~> and >= when specifying rubygem in Gemfile?
...git incrementing to some arbitrary value, but the ones preceding it in the string cannot be greater than what you provided. Thus for ~>0.8.5, any value is acceptable for the third digit (the 5) provided that it is greater than or equal to 5, but the leading 0.8 must be "0.8".
You might do this, ...
How do I escape reserved words used as column names? MySQL/Create Table
...portability between different SQL servers you should use ANSI SQL queries. String escaping in ANSI SQL is done by using double quotes ("). Unfortunately, this escaping method is not portable to MySQL, unless it is set in ANSI compatibility mode.
Personally, I always start my MySQL server with the -...
RabbitMQ / AMQP: single queue, multiple consumers for same message?
...) {
console.log('about to publish')
var encoded_payload = JSON.stringify(payload);
exchange.publish('', encoded_payload, {})
}
// Recieve messages
connection.queue("my_queue_name", function(queue){
console.log('Created queue')
queue.bind(exchange, '');
...
Binding ConverterParameter
...onverterBindableParameter()
{ }
public ConverterBindableParameter(string path)
{
Binding = new Binding(path);
}
public ConverterBindableParameter(Binding binding)
{
Binding = binding;
}
#region Overridden Methods
public override object ProvideV...