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Import module from subfolder
... package you should include the "root" packagename as well, e.g.:
from dirFoo.dirFoo1.foo1 import Foo1
from dirFoo.dirFoo2.foo2 import Foo2
Or you can use relative imports:
from .dirfoo1.foo1 import Foo1
from .dirfoo2.foo2 import Foo2
...
(How) can I count the items in an enum?
...good way to do this, usually you see an extra item in the enum, i.e.
enum foobar {foo, bar, baz, quz, FOOBAR_NR_ITEMS};
So then you can do:
int fuz[FOOBAR_NR_ITEMS];
Still not very nice though.
But of course you do realize that just the number of items in an enum is not safe, given e.g.
enum...
What is the lifetime of a static variable in a C++ function?
...tter() { cout << "Destroyed " << str << endl; }
};
void foo(bool skip_first)
{
if (!skip_first)
static emitter a("in if");
static emitter b("in foo");
}
int main(int argc, char*[])
{
foo(argc != 2);
if (argc == 3)
foo(false);
}
Output:
C:>sam...
jquery selector for id starts with specific text [duplicate]
...;
// Select all elements that have an attribute whose value has the word foobar
$("[attribute~='foobar']");
// Select all elements that have an attribute whose value starts with 'foo' and ends
// with 'bar'
$("[attribute^='foo'][attribute$='bar']");
attribute in the code above can be changed ...
What's the correct way to convert bytes to a hex string in Python 3?
...ascii module:
>>> import binascii
>>> binascii.hexlify('foo'.encode('utf8'))
b'666f6f'
>>> binascii.unhexlify(_).decode('utf8')
'foo'
See this answer:
Python 3.1.1 string to hex
share
|...
`new function()` with lower case “f” in JavaScript
...on () {
var instance = {},
inner = 'some value';
instance.foo = 'blah';
instance.get_inner = function () {
return inner;
};
instance.set_inner = function (s) {
inner = s;
};
return instance;
})();
The purpose of the new operator is to create ...
find: missing argument to -exec
...this example:
$ cat /tmp/echoargs
#!/bin/sh
echo $1 - $2 - $3
$ find /tmp/foo -exec /tmp/echoargs {} \;
/tmp/foo - -
/tmp/foo/one - -
/tmp/foo/two - -
$ find /tmp/foo -exec /tmp/echoargs {} +
/tmp/foo - /tmp/foo/one - /tmp/foo/two
Your command has two errors:
First, you use {};, but the ; must b...
How to interpolate variables in strings in JavaScript, without concatenation?
...out escaping, which is great for templates:
return `
<div class="${foo}">
...
</div>
`;
Browser support:
As this syntax is not supported by older browsers (mostly Internet Explorer), you may want to use Babel/Webpack to transpile your code into ES5 to ensure it will ...
What are all the uses of an underscore in Scala?
...
The ones I can think of are
Existential types
def foo(l: List[Option[_]]) = ...
Higher kinded type parameters
case class A[K[_],T](a: K[T])
Ignored variables
val _ = 5
Ignored parameters
List(1, 2, 3) foreach { _ => println("Hi") }
Ignored names of self types
...
How do you test functions and closures for equality?
...b is ObjBlock: \(b is ObjBlock), objA === objB: \(objA === objB)"
}
class Foo
{
lazy var swfBlock: ObjBlock = self.swf
func swf() { print("swf") }
@objc func obj() { print("obj") }
}
let swfBlock: SwfBlock = { print("swf") }
let objBlock: ObjBlock = { print("obj") }
let foo: Foo = Foo(...