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JavaScript “new Array(n)” and “Array.prototype.map” weirdness
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130
It appears that the first example
x = new Array(3);
Creates an array with undefined pointers....
setuptools: package data folder location
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+50
Option 1: Install as package data
The main advantage of placing data files inside the root of your Python package
is that it lets you...
How to show current time in JavaScript in the format HH:MM:SS?
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104
function checkTime(i) {
if (i < 10) {
i = "0" + i;
}
return i;
}
funct...
valueOf() vs. toString() in Javascript
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107
The reason why ("x="+x) gives "x=value" and not "x=tostring" is the following. When evaluating ...
How does the ThreadStatic attribute work?
...emoting.
– user2173353
Aug 27 at 12:02
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Possible heap pollution via varargs parameter
...heap never gets polluted, this should never throw a CCE
B b = listOfBs.get(0);
@SafeVarargs does not prevent this at all. However, there are methods which provably will not pollute the heap, the compiler just can't prove it. Previously, callers of such APIs would get annoying warnings that were c...
Regex - Does not contain certain Characters
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answered Nov 5 '10 at 12:53
Ned BatchelderNed Batchelder
306k6464 gold badges503503 silver badges608608 bronze badges
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How to export plots from matplotlib with transparent background?
...e keyword argument transparent=True to save the image as a png file.
In [30]: x = np.linspace(0,6,31)
In [31]: y = np.exp(-0.5*x) * np.sin(x)
In [32]: plot(x, y, 'bo-')
Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>]
In [33]: savefig('demo.png', transparent=True)
Result:
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Display current date and time without punctuation
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edited May 15 '18 at 10:13
answered Dec 12 '13 at 18:41
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What is the lifetime of a static variable in a C++ function?
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The lifetime of function static variables begins the first time[0] the program flow encounters the declaration and it ends at program termination. This means that the run-time must perform some book keeping in order to destruct it only if it was actually constructed.
Additionally, since t...