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Best way to add comments in erb
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4
It's one of only a few supported ERB tags. ruby-doc.org/stdlib/libdoc/erb/rdoc/classes/ERB.html If it didn't work on their PC, they either h...
Try-finally block prevents StackOverflowError
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Peter LawreyPeter Lawrey
486k6969 gold badges670670 silver badges10481048 bronze badges
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Converting between datetime, Timestamp and datetime64
How do I convert a numpy.datetime64 object to a datetime.datetime (or Timestamp )?
12 Answers
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Is there a common Java utility to break a list into batches?
...sz NurkiewiczTomasz Nurkiewicz
301k6060 gold badges648648 silver badges639639 bronze badges
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Determine .NET Framework version for dll
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14 Answers
14
Active
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C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586878889"
"909192939...
Getting attribute using XPath
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482
How could I get the value of lang (where lang=eng in book title), for
the first element?
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How can I create a two dimensional array in JavaScript?
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var items = [
[1, 2],
[3, 4],
[5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);
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Find column whose name contains a specific string
...that match:
import pandas as pd
data = {'spike-2': [1,2,3], 'hey spke': [4,5,6], 'spiked-in': [7,8,9], 'no': [10,11,12]}
df = pd.DataFrame(data)
spike_cols = [col for col in df.columns if 'spike' in col]
print(list(df.columns))
print(spike_cols)
Output:
['hey spke', 'no', 'spike-2', 'spiked-in...
What does numpy.random.seed(0) do?
...numbers predictable
>>> numpy.random.seed(0) ; numpy.random.rand(4)
array([ 0.55, 0.72, 0.6 , 0.54])
>>> numpy.random.seed(0) ; numpy.random.rand(4)
array([ 0.55, 0.72, 0.6 , 0.54])
With the seed reset (every time), the same set of numbers will appear every time.
If the r...