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Passing an integer by reference in Python
... the workaround is to simply return the object that you want:
def multiply_by_2(x):
return 2*x
x = 1
x = multiply_by_2(x)
*In the first example case above, 3 actually gets passed to x.__setitem__.
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How do I scroll the UIScrollView when the keyboard appears?
...ationCenter.default.addObserver(self, selector: #selector(onKeyboardAppear(_:)), name: NSNotification.Name.UIKeyboardDidShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(onKeyboardDisappear(_:)), name: NSNotification.Name.UIKeyboardDidHide, object: nil)
}
// Do...
How to disable scrolling temporarily?
...croll DOMMouseScroll.disablescroll touchmove.disablescroll",
t._handleWheel
);
t.$container.on("scroll.disablescroll", function() {
t._handleScrollbar.call(t);
});
if(t.opts.handleKeys) {
t.$document.on("keydown.disablescroll", fu...
AngularJS: How can I pass variables between controllers?
...Do',[])
.service('dataService', function() {
// private variable
var _dataObj = {};
// public API
this.dataObj = _dataObj;
})
.controller('One', function($scope, dataService) {
$scope.data = dataService.dataObj;
})
.controller('Two', function($scope, dataService) {
$scope.data = dat...
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
...on
struct = {}
try:
try: #try parsing to dict
dataform = str(response_json).strip("'<>() ").replace('\'', '\"')
struct = json.loads(dataform)
except:
print repr(resonse_json)
print sys.exc_info()
Note: Quotes within the data must be properly escaped
...
How do I find the duplicates in a list and create another list with them?
...mpare each with each). For example:
a = [[1], [2], [3], [1], [5], [3]]
no_dupes = [x for n, x in enumerate(a) if x not in a[:n]]
print no_dupes # [[1], [2], [3], [5]]
dupes = [x for n, x in enumerate(a) if x in a[:n]]
print dupes # [[1], [3]]
...
Function for Factorial in Python
...The concept used here is called recursion ( en.wikipedia.org/wiki/Recursion_(computer_science) ) - a function calling itself is perfectly fine and often useful.
– schnaader
Nov 7 '14 at 10:06
...
WatiN or Selenium? [closed]
...s with Selenium (not that I know off, at least):
class IEManager
{
IE _ie = null;
object _lock = new object();
IE GetInstance(string UrlFragment)
{
lock (_lock)
{
if (_ie == null)
{
var instances = new IECollection(true); //F...
Convert string to symbol-able in ruby
...oking at. For your example:
'Book Author Title'.parameterize.underscore.to_sym # :book_author_title
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In Django, how does one filter a QuerySet with dynamic field lookups?
... argument expansion may be used to solve this problem:
kwargs = {
'{0}__{1}'.format('name', 'startswith'): 'A',
'{0}__{1}'.format('name', 'endswith'): 'Z'
}
Person.objects.filter(**kwargs)
This is a very common and useful Python idiom.
...