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Why does Math.round(0.49999999999999994) return 1?
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576
Summary
In Java 6 (and presumably earlier), round(x) is implemented as floor(x+0.5).1 This i...
Find element's index in pandas Series
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207
>>> myseries[myseries == 7]
3 7
dtype: int64
>>> myseries[myseries == 7].in...
How to use a different version of python during NPM install?
...g centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install )
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Using numpy to build an array of all combinations of two arrays
...ion:
@pv's solution
In [113]:
%timeit cartesian(([1, 2, 3], [4, 5], [6, 7]))
10000 loops, best of 3: 135 µs per loop
In [114]:
cartesian(([1, 2, 3], [4, 5], [6, 7]))
Out[114]:
array([[1, 4, 6],
[1, 4, 7],
[1, 5, 6],
[1, 5, 7],
[2, 4, 6],
[2, 4, 7],
[2,...
Selecting with complex criteria from pandas.DataFrame
...00 for x in range(10)]})
>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 900
3 8 80 900
4 7 50 200
5 9 30 900
6 2 80 700
7 2 80 400
8 5 80 300
9 7 70 800
We can apply column operations and get boolean Series objects:
>>> df["B"] > 50
0 False...
Is ASCII code 7-bit or 8-bit?
... me ASCII is 8-bit character coding scheme. But it is defined only for 0-127 codes which means it can be fit into 7-bits. So can't it be argued that ASCII bit is actually 7-bit code?
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Iterate a list with indexes in Python
...swear I've seen the function (or method) that takes a list, like this [3, 7, 19] and makes it into iterable list of tuples, like so: [(0,3), (1,7), (2,19)] to use it instead of:
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How do the post increment (i++) and pre increment (++i) operators work in Java?
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Does this help?
a = 5;
i=++a + ++a + a++; =>
i=6 + 7 + 7; (a=8)
a = 5;
i=a++ + ++a + ++a; =>
i=5 + 7 + 8; (a=8)
The main point is that ++a increments the value and immediately returns it.
a++ also increments the value (in the background) but returns unchanged value of...
Java 7 language features with Android
Just wondering if anyone has tried using new Java 7 language features with Android?
I know that Android reads the bytecode that Java spits out and turns it to dex. So I guess my question is can it understand the bytecode of Java 7?
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What's the difference between “mod” and “remainder”?
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Grijesh Chauhan
51.1k1515 gold badges117117 silver badges179179 bronze badges
answered Dec 3 '12 at 12:54
David SchwartzDavid Schwartz
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