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How to add an object to an array
How can I add an object to an array (in javascript or jquery)?
For example, what is the problem with this code?
13 Answ...
Can I call a constructor from another constructor (do constructor chaining) in C++?
...onwards has this same feature (called delegating constructors).
The syntax is slightly different from C#:
class Foo {
public:
Foo(char x, int y) {}
Foo(int y) : Foo('a', y) {}
};
C++03: No
Unfortunately, there's no way to do this in C++03, but there are two ways of simulating this:
You ...
str performance in python
... 3 ('100000')
3 RETURN_VALUE
% with a run-time expression is not (significantly) faster than str:
>>> Timer('str(x)', 'x=100').timeit()
0.25641703605651855
>>> Timer('"%s" % x', 'x=100').timeit()
0.2169809341430664
Do note that str is still slightly sl...
How to use the IEqualityComparer
...m without duplication. I created a compare class to do this work, but the execution of the function causes a big delay from the function without distinct, from 0.6 sec to 3.2 sec!
...
How do you perform a left outer join using linq extension methods
... foo => foo.Foo_Id,
bar => bar.Foo_Id,
(x,y) => new { Foo = x, Bars = y })
.SelectMany(
x => x.Bars.DefaultIfEmpty(),
(x,y) => new { Foo=x.Foo, Bar=y});
...
Simple explanation of MapReduce?
...ry number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say
A = [1, 2, 3]
foreach (item in A) A[item] = A[item] * 2
and I'd have A = [2, 4, 6] but instead of writing loops, if I have a map function I could write
A =...
Why is lazy evaluation useful?
...g been wondering why lazy evaluation is useful. I have yet to have anyone explain to me in a way that makes sense; mostly it ends up boiling down to "trust me".
...
Placement of the asterisk in pointer declarations
...lly a death-trap then? Is there any specification or further reading that explains why int* test,test2 only makes the first variable a pointer?
– Michael Stum♦
Oct 7 '08 at 21:06
...
Change x axes scale in matplotlib
...t:
import matplotlib.pyplot as plt
...
plt.ticklabel_format(style='sci', axis='x', scilimits=(0,0))
This applies scientific notation (i.e. a x 10^b) to your x-axis tickmarks
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How can I create an Asynchronous function in Javascript?
...provided natively, such as:
setInterval
setTimeout
requestAnimationFrame
XMLHttpRequest
WebSocket
Worker
Some HTML5 APIs such as the File API, Web Database API
Technologies that support onload
... many others
In fact, for the animation jQuery uses setInterval.
...