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How do I get the name of a Ruby class?
...ce the class of a class is Class. Instead, you can just use name:
module Foo
class Bar
def self.say_name
puts "I'm a #{name}!"
end
end
end
Foo::Bar.say_name
output:
I'm a Foo::Bar!
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What is the best way to exit a function (which has no return value) in python before the function en
...
I would suggest:
def foo(element):
do something
if not check: return
do more (because check was succesful)
do much much more...
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How can I copy the output of a command directly into my clipboard?
...Jan 24 23:00:00 EST 2017
$ cb | cat
Tue Jan 24 23:00:00 EST 2017
$ cb > foo
$ cat foo
Tue Jan 24 23:00:00 EST 2017
Chaining
$ date | cb | tee updates.log
Tue Jan 24 23:11:11 EST 2017
$ cat updates.log
Tue Jan 24 23:11:11 EST 2017
# clipboard contains: Tue Jan 24 23:11:11 EST 2017
Copy via fi...
Java: Calling a super method which calls an overridden method
...to be some confusion. Let me try a different explanation.
When you invoke foo(), you actually invoke this.foo(). Java simply lets you omit the this. In the example in the question, the type of this is SubClass.
So when Java executes the code in SuperClass.method1(), it eventually arrives at this.m...
ROW_NUMBER() in MySQL
...@i+1 AS iterator,
t.*
FROM
tablename AS t,
(SELECT @i:=0) AS foo
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jQuery how to bind onclick event to dynamically added HTML element [duplicate]
...lates the object to handle
var staticObj = [
{ ID: '1', Name: 'Foo' },
{ ID: '2', Name: 'Foo' },
{ ID: '3', Name: 'Foo' }
];
staticObj[1].children = [
{ ID: 'a', Name: 'Bar' },
{ ID: 'b', Name: 'Bar' },
{ ID: 'c', Name: 'Bar' }
];
s...
How can you sort an array without mutating the original array?
...
You can use slice with no arguments to copy an array:
var foo,
bar;
foo = [3,1,2];
bar = foo.slice().sort();
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Why can't static methods be abstract in Java?
...en you have a call to that method in the superclass itself. Suppose Super.foo calls Super.bar. If a subclass implements Subclass.bar, and then calls foo, then foo will still call Super.bar, not Subclass.bar. Hence, what you really have is two entirely different and unrelated methods both called "...
How to declare Return Types for Functions in TypeScript
... will be a place where you have to have an explicit return type.
function foo(){
if (true)
return "string";
else
return 0;
}
This, however, will work:
function foo() : any{
if (true)
return "string";
else
return 0;
}
...
Execute a terminal command from a Cocoa app
...
You can use NSTask. Here's an example that would run '/usr/bin/grep foo bar.txt'.
int pid = [[NSProcessInfo processInfo] processIdentifier];
NSPipe *pipe = [NSPipe pipe];
NSFileHandle *file = pipe.fileHandleForReading;
NSTask *task = [[NSTask alloc] init];
task.launchPath = @"/usr/bin/gre...