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How to get the first column of a pandas DataFrame as a Series?
...x))
print(x.head(10))
<class 'pandas.core.series.Series'>
0 110.96
1 119.40
2 135.89
3 152.32
4 192.91
5 177.20
6 181.16
7 177.30
8 200.13
9 235.41
Name: x, dtype: float64
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When to use std::forward to forward arguments?
... create account1 and try to deposit into it
new cash BankAccount(0x7ffee68d96b0, cash $0)
deposit cash called BankAccount(0x7ffee68d96b0, cash $100)
BankAccount(0x7ffee68d96b0, cash $100)
# SUCCESS: account1 deposit succeeded!
delete account BankAccount(0x7ffee68d96b0, cash $100)
# create locked ac...
What size should TabBar images be?
...Guidelines:
@1x : about 25 x 25 (max: 48 x 32)
@2x : about 50 x 50 (max: 96 x 64)
@3x : about 75 x 75 (max: 144 x 96)
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Fastest way to find second (third…) highest/lowest value in vector or column
...746.7627 1433.221 1500.7865 13768.148 100
For 1 million numbers:
N = 1e6 #evaluates to 1 million
x = rnorm(N)
microbenchmark::microbenchmark(
Rfast = Rfast::nth(x,5,descending = T),
maxN = maxN(x,5),
order = x[order(x, decreasing = T)[5]]
)
Unit: milliseconds
expr min ...
How do you unit test a Celery task?
...wered Aug 22 '12 at 20:33
FlaPer87FlaPer87
97377 silver badges1212 bronze badges
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How do I parse a string to a float or int?
...erything with spaces in between cannot be converted, like "- 12.3" and "45 e6"
– Simon
Aug 12 '19 at 13:43
...
Measuring the distance between two coordinates in PHP
...8684);
} else {
return $miles;
}
}
results :
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "M") . " Miles<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "K") . " Kilometers<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "N") . " Nautical ...
How to compare two floating point numbers in Bash?
... scientific format, provided a capital letter E is employed, e.g. num1=3.44E6
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WinDBG用法详解 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
..............................................................................87
30.16.1流程控制符号.........................................................................................................87
30.16.2变量...........................................................................
How to add 30 minutes to a JavaScript Date object?
...
var in30Mins = new Date(+new Date() + 1.8e6) is a one–liner, but not sure it's any better than a two–liner. ;-)
– RobG
Jun 18 '17 at 12:44
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