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What is the difference between `sorted(list)` vs `list.sort()`?
...all in-place operations).
sorted() works on any iterable, not just lists. Strings, tuples, dictionaries (you'll get the keys), generators, etc., returning a list containing all elements, sorted.
Use list.sort() when you want to mutate the list, sorted() when you want a new sorted object back. Use...
How to get the return value from a thread in python?
The function foo below returns a string 'foo' . How can I get the value 'foo' which is returned from the thread's target?
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
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NewState：状态的数值（0..4，见上文）
StateString：状态的名称（“Disconnected”等）
建立连接时出错
在尝试建立连接之前，首先会检查客户端的状态是否允许这样做（状态 = Disconnected 或 ConnectionAborted）。...
Do I really have a car in my garage? [duplicate]
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For simplicity's sake, I would override the ToString() methods in each class and return the concrete type as a string then use a switch() to decide what to do with each item.
– Captain Kenpachi
Jul 23 '14 at 7:38
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Add days to JavaScript Date
...usually work, sometimes can lead to wrong results because of conversion to string and vice versa. It should be var result = new Date(date.getTime());
– Marcin
Nov 10 '15 at 10:22
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Why do some functions have underscores “__” before and after the function name?
...dler, ThreadableMixin):
def _worker(self):
self.res = self.render_string("template.html",
title = _("Title"),
data = self.application.db.query("select ... where object_id=%s", self.object_id)
)
...
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How to capture stdout output from a Python function call?
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Try this context manager:
from io import StringIO
import sys
class Capturing(list):
def __enter__(self):
self._stdout = sys.stdout
sys.stdout = self._stringio = StringIO()
return self
def __exit__(self, *args):
self.extend(s...
Why use Abstract Base Classes in Python?
...t.
For example, if there is a __str__() method, it is expected to return a string representation of the object. It could delete all contents of the object, commit the transaction and spit a blank page out of the printer... but there is a common understanding of what it should do, described in the Py...
Difference between Lookup() and Dictionary(Of list())
... Stopwatch stopwatch = new Stopwatch();
var list = new List<string>();
for (int i = 0; i < 5000000; ++i)
{
list.Add(i.ToString());
}
stopwatch.Start();
var lookup = list.ToLookup(x => x);
stopwatch.Stop();
Co...
Objective-C ARC: strong vs retain and weak vs assign
..." include an implicit "retain"
Example:
@property (nonatomic, retain) NSString *name;
@synthesize name;
4.assign
assign is the default and simply performs a variable assignment
assign is a property attribute that tells the compiler how to synthesize the property's setter implementation
I wo...