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How to check if all elements of a list matches a condition?
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The best answer here is to use all(), which is the builtin for this situation. We combine this with a generator expression to produce the result you want cleanly and efficiently. For example:
>>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
>>...
capturing self strongly in this block is likely to lead to a retain cycle
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Good answer, but I take small issue with you saying: “you can't refer to self or properties on self from within a block that will be strongly retained by self.” This is not strictly true. Please see my answer below. Better to say, “you must take...
Checking whether a variable is an integer or not [duplicate]
...ympy.Rational(5) doesn't really fit under the "rational" subsection of the table.
– user2357112 supports Monica
Jan 27 '19 at 2:29
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jQuery - checkbox enable/disable
...hkcc9").on('click', function() {
$(this)
.parents('table')
.find('.group1')
.prop('checked', $(this).is(':checked'));
});
share
|
improve this answ...
Stripping everything but alphanumeric chars from a string in Python
What is the best way to strip all non alphanumeric characters from a string, using Python?
11 Answers
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Adding the little arrow to the right side of a cell in an iPhone TableView Cell
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Just set the respective accessoryType property of UITableViewCell.
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
In Swift 3,
cell.accessoryType = .disclosureIndicator
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Representing graphs (data structure) in Python
...f._graph[node2].add(node1)
def remove(self, node):
""" Remove all references to node """
for n, cxns in self._graph.items(): # python3: items(); python2: iteritems()
try:
cxns.remove(node)
except KeyError:
pass
tr...
Creating a blocking Queue in .NET?
...threads reading from the same queue. If the queue reaches a specific size all threads that are filling the queue will be blocked on add until an item is removed from the queue.
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Installing Google Protocol Buffers on mac
I would like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on mac using Terminal command line. I tried with brew install protobuf , but the latest version 2.5.0 has been installed. Is it possible to install the older version from terminal.
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Best way to store a key=>value array in JavaScript?
...cts (MDN).
In ECMAScript6 there is also Map (see the browser compatibility table there):
An Object has a prototype, so there are default keys in the map. This could be bypassed by using map = Object.create(null) since ES5, but was seldomly done.
The keys of an Object are Strings and Symbols, wher...