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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
...es which are equal when operands refer to the same object in memory.
(From Comparison Operators in Mozilla Developer Network)
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What is the rationale for all comparisons returning false for IEEE754 NaN values?
Why do comparisons of NaN values behave differently from all other values?
That is, all comparisons with the operators ==, =, where one or both values is NaN returns false, contrary to the behaviour of all other values.
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Difference between except: and except Exception as e: in Python
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Well, there's no magic here. Exception is derived from BaseException, that's why except Exception does not catch BaseException. If you write except BaseException, it'll be caught too. Bare except just catches everything.
– fjarri
Sep 27...
When should a class be Comparable and/or Comparator?
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The text below comes from Comparator vs Comparable
Comparable
A comparable object is capable of comparing itself with another object. The class itself must implements the java.lang.Comparable interface in order to be able to compare its instanc...
Using Pairs or 2-tuples in Java [duplicate]
My Hashtable in Java would benefit from a value having a tuple structure. What data structure can I use in Java to do that?
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Output to the same line overwriting previous output?
... same code on Python 2.6+, put the following line at the top of the file:
from __future__ import print_function
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Limiting floats to two decimal points
...exactly. The command line is just showing you the full floating point form from memory.
With floating point representation, your rounded version is the same number. Since computers are binary, they store floating point numbers as an integer and then divide it by a power of two so 13.95 will be repr...
The input is not a valid Base-64 string as it contains a non-base 64 character
...Replace("data:image/png;base64,", String.Empty);
byte[] image64 = Convert.FromBase64String(convert);
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Does the JVM prevent tail call optimizations?
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There is also more discussion in Sun bug #4726340, where the evaluation (from 2002) ends:
I believe this could be done nonetheless, but it is not a small task.
Currently, there is some work going on in the Da Vinci Machine project. The tail call subproject's status is listed as "proto 80%"; ...
Clear terminal in Python [duplicate]
... standard "comes with batteries" method exist to clear the terminal screen from a Python script, or do I have to go curses (the libraries, not the words)?
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