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Calling a function from a string in C#
...ipped */
public delegate void functionPointer();
functionPointer foo = hello;
foo(); // Writes hello world to the console.
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follo...
Inline comments for Bash?
....) syntax doesn't actually seem to allow embedding comments: whereas echo "foo" `# comment` "bar" will terminate the comment at the second backtick, the supposed equivalent echo "foo" $(: # comment) "bar" doesn't parse anything behind the #.
– leftaroundabout
J...
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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Keystore change passwords
...KeyException: Cannot recover key Any suggestions?
– Foo
Jun 21 '15 at 12:54
@Foo did you ever figure out that issue? ...
Why use Abstract Base Classes in Python?
...ass Base(object):
__metaclass__ = ABCMeta
@abstractmethod
def foo(self):
pass
@abstractmethod
def bar(self):
pass
# python3
class Base(object, metaclass=ABCMeta):
@abstractmethod
def foo(self):
pass
@abstractmethod
def bar(self):
...
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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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, ...
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.
...
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...