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Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout
...nd out which PID it has like this:
$ lsof -i :3000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
Passenger 40466 josh 5u IPv4 0x7cae9332073ed4df 0t0 TCP *:hbci (LISTEN)
Passenger 40467 josh 5u IPv4 0x7cae9332073ed4df 0t0 TCP *:hbci (LISTEN)
Then simply...
instantiate a class from a variable in PHP?
...eck them out here (call_user_func_array , call_user_func).
example
class Foo {
static public function test() {
print "Hello world!\n";
}
}
call_user_func('Foo::test');//FOO is the class, test is the method both separated by ::
//or
call_user_func(array('Foo', 'test'));//alternatively you c...
Python circular importing?
... of it) for the first time, the code inside the module is executed sequentially like any other code; e.g., it is not treated any differently that the body of a function. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of th...
Reusing output from last command in Bash
...ng backticks: `your_cmd` According to the Gnu Bash manual they are functionally identical. Of course this is also subject to the warning raised by @memecs
– user2065875
Apr 20 '15 at 21:33
...
jsonify a SQLAlchemy result set in Flask [duplicate]
...
It seems that you actually haven't executed your query. Try following:
return jsonify(json_list = qryresult.all())
[Edit]: Problem with jsonify is, that usually the objects cannot be jsonified automatically. Even Python's datetime fails ;)
Wha...
Elegant ways to support equivalence (“equality”) in Python classes
When writing custom classes it is often important to allow equivalence by means of the == and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method:
...
New self vs. new static
...uated at compile time and must not depend on run-time information.
class Foo {
public $name = static::class;
}
$Foo = new Foo;
echo $Foo->name; // Fatal error
Using self::
class Foo {
public $name = self::class;
}
$Foo = new Foo;
echo $Foo->name; // Foo
Please note that ...
Adding 'serial' to existing column in Postgres
I have a small table (~30 rows) in my Postgres 9.0 database with an integer ID field (the primary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
...
What's the common practice for enums in Python? [duplicate]
...(names.split()):
setattr(self, name, number)
>>> foo = Enumeration("bar baz quux")
>>> foo.quux
2
You can also just use class members, though you'll have to supply your own numbering:
>>> class Foo(object):
bar = 0
baz = 1
quux...
How to remove an element from a list by index
...org/projects/python/trunk/Objects/listobject.c how PyList_GetItem() essentially returns ((PyListObject *)op) -> ob_item[i]; - the ith element of an array.
– glglgl
Sep 9 '13 at 7:53
...