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How to sort an array in Bash
...ed and see!
– antak
Oct 19 '15 at 9:04
3
Very nice. Could you explain for the average bash user h...
R - Concatenate two dataframes?
... line adds column b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11...
Plot two histograms on single chart with matplotlib
...umpy
from matplotlib import pyplot
x = [random.gauss(3,1) for _ in range(400)]
y = [random.gauss(4,2) for _ in range(400)]
bins = numpy.linspace(-10, 10, 100)
pyplot.hist(x, bins, alpha=0.5, label='x')
pyplot.hist(y, bins, alpha=0.5, label='y')
pyplot.legend(loc='upper right')
pyplot.show()
...
How to get all possible combinations of a list’s elements?
...
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edited Jan 21 '09 at 12:52
answered Jan 21 '09 at 11:20
...
How to compare times in Python?
...datetime.datetime.now()
>>> today8am = now.replace(hour=8, minute=0, second=0, microsecond=0)
>>> now < today8am
True
>>> now == today8am
False
>>> now > today8am
False
share
...
How to tell if a tag failed to load
...d I'd like to be able to tell whether the loading failed in some way -- a 404, a script error in the loaded script, whatever.
...
How to get execution time in rails console?
...
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edited Jul 20 '19 at 4:28
Jeremy Baker
3,04833 gold badges2121 silver badges2525 bronze badges
...
swift case falling through
...
370
Yes. You can do so as follows:
var testVal = "hello"
var result = 0
switch testVal {
case "one...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...look more in-depth at why Hash.new([]) doesn’t work:
h = Hash.new([])
h[0] << 'a' #=> ["a"]
h[1] << 'b' #=> ["a", "b"]
h[1] #=> ["a", "b"]
h[0].object_id == h[1].object_id #=> true
h #=> {}
We can see that our default object is being reused and mutated (t...
Single Line Nested For Loops
...
Anthony Geoghegan
9,51244 gold badges4040 silver badges4848 bronze badges
answered Jun 9 '13 at 5:26
Jeff TratnerJeff Tratner
...