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Why do we use volatile keyword? [duplicate]
...t but I wonder why people use it? What does it exactly do? I searched the forum, I found it only C# or Java topics.
2 Answe...
What is lexical scope?
...)
{
int x = 10;
fun();
}
Here fun can either access x in dummy1 or dummy2, or any x in any function that call fun with x declared in it.
dummy1();
will print 5,
dummy2();
will print 10.
The first one is called static because it can be deduced at compile-time, and the second is call...
How to wait for a BackgroundWorker to cancel?
Consider a hypothetical method of an object that does stuff for you:
18 Answers
18
...
Array.push() if does not exist?
...ction(currentElement)
Array.prototype.inArray = function(comparer) {
for(var i=0; i < this.length; i++) {
if(comparer(this[i])) return true;
}
return false;
};
// adds an element to the array if it does not already exist using a comparer
// function
Array.prototype.push...
Python Write bytes to file
...
Since OP seems to be using a non-Windows platform, this only works in Py3. In Py2, you would need to use io.open.
– lvc
Aug 23 '12 at 13:32
2
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Defining a function with multiple implicit arguments in Scala
... May 17 '12 at 12:08
missingfaktormissingfaktor
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Is “double hashing” a password less secure than just hashing it once?
Is hashing a password twice before storage any more or less secure than just hashing it once?
16 Answers
...
Merge/flatten an array of arrays
...ilable in Node.js starting with version 11, and not at all in Internet Explorer.
const arrays = [
["$6"],
["$12"],
["$25"],
["$25"],
["$18"],
["$22"],
["$10"]
];
const merge3 = arrays.flat(1); //The depth level specifying how deep a nested ...
How do you programmatically set an attribute?
...
setattr(x, attr, 'magic')
For help on it:
>>> help(setattr)
Help on built-in function setattr in module __builtin__:
setattr(...)
setattr(object, name, value)
Set a named attribute on an object; setattr(x, 'y', v) is equivalent to
...
pandas resample documentation
...
See the timeseries documentation. It includes a list of offsets (and 'anchored' offsets), and a section about resampling.
Note that there isn't a list of all the different how options, because it can be any NumPy array function and any function that is available via groupby dispatching can be pas...