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How to convert a char array back to a string?
...very unusual situation: Because String is handled specially in Java, even "foo" is actually a String. So the need for splitting a String into individual chars and join them back is not required in normal code.
Compare this to C/C++ where "foo" you have a bundle of chars terminated by a zero byte on...
How do I create and access the global variables in Groovy?
... several methods that need to share the same variable, use a field:
class Foo {
def a;
def foo() {
a = 1;
}
def bar() {
print a;
}
}
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Why is lazy evaluation useful?
...ges let you reason about function definitions using equational reasoning.
foo x = x + 3
Unfortunately in a non-lazy setting, more statements fail to return than in a lazy setting, so this is less useful in languages like ML. But in a lazy language you can safely reason about equality.
Secondly, ...
Keystore change passwords
...KeyException: Cannot recover key Any suggestions?
– Foo
Jun 21 '15 at 12:54
@Foo did you ever figure out that issue? ...
PHP expresses two different strings to be the same [duplicate]
...e, typeof operator always returns a string, so you could just use
typeof foo == 'string' instead of typeof foo === 'string' with no harm.
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What is an example of the simplest possible Socket.io example?
...id sent from the server
socket.emit('i am client', {data: 'foo!', id: data.id});
});
socket.on('time', function(data) {
addMessage(data.time);
});
socket.on('error', console.error.bind(console));
socket.on('m...
compareTo() vs. equals()
...
A difference is that "foo".equals((String)null) returns false while "foo".compareTo((String)null) == 0 throws a NullPointerException. So they are not always interchangeable even for Strings.
...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...last digit in the used gem can be "greater than" the given version. E.g., foo ~> a.b.c.d means any version of foo is fine as long as it's still a.b.c.{something} where {something} >= d. See also related question
– michael
Feb 10 '13 at 0:32
...
How can I determine the current line number in JavaScript?
...some marks.
Here is a quick example (yes, it's messed a little).
function foo()
{
alert(line(1));
var a;
var b;
alert(line(2));
}
foo();
function line(mark)
{
var token = 'line\\(' + mark + '\\)';
var m = line.caller.toString().match(
new Re...
How do you check in python whether a string contains only numbers?
... I had no idea that method existed. I've always done try: assert str(int(foo)) == foo; except (AssertionError,ValueError): #handle and it felt ugly as sin. Thanks!
– Adam Smith
Jan 27 '14 at 18:23
...