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How can I create a correlation matrix in R?
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104
An example,
d &lt- data.frame(x1=rnorm(10),
x2=rnorm(10),
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What is the purpose of std::make_pair vs the constructor of std::pair?
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170
The difference is that with std::pair you need to specify the types of both elements, whereas ...
Spring Data: “delete by” is supported?
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188
Deprecated answer (Spring Data JPA <=1.6.x):
@Modifying annotation to the rescue. You will...
Get first and last day of month using threeten, LocalDate
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10 Answers
10
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Add a number to each selection in Sublime Text 2, incremented once per selection
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331
I recommend the plugin Text Pastry. The Number Sequence command is the one you need.
I prefer t...
Import Error: No module named numpy
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Support for Python 3 was added in NumPy version 1.5.0, so to begin with, you must download/install a newer version of NumPy.
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enum - getting value of enum on string conversion
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197
You are printing the enum object. Use the .value attribute if you wanted just to print that:
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How to print to console in pytest?
...n that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts ======================...
What's the best way to inverse sort in scala?
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edited Oct 19 '11 at 9:40
answered Oct 18 '11 at 6:01
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How to find all occurrences of a substring?
...re
[m.start() for m in re.finditer('test', 'test test test test')]
#[0, 5, 10, 15]
If you want to find overlapping matches, lookahead will do that:
[m.start() for m in re.finditer('(?=tt)', 'ttt')]
#[0, 1]
If you want a reverse find-all without overlaps, you can combine positive and negative lo...