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How to split/partition a dataset into training and test datasets for, e.g., cross validation?
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If you want to split the data set once in two halves, you can use numpy.random.shuffle, or numpy.random.permutation if you need to keep track of the indices:
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
num...
Why is the parent div height zero when it has floated children
...t isn't floating (so nothing stops the height of the container being 0, as if it were empty).
Setting overflow: hidden on the container will avoid that by establishing a new block formatting context. See methods for containing floats for other techniques and containing floats for an explanation abo...
Encoding Javascript Object to Json string
...ncode a Javascript object into a JSON string and I am having considerable difficulties.
2 Answers
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What does a tilde in angle brackets mean when creating a Java generic class?
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Just for personal clarification - IntelliJ produces Java source files with this notation, iaw, source files with illegal Java content??? Or is this just the view of the source and the saved file is correct?
– Andreas Dolk
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Rails bundle install production only
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Not sure if this is something that changed in the last four years, but arguments to --without are supposed to be separated with :s, not spaces. So I believe it should be bundle install --without development:test.
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How can I replace a regex substring match in Javascript?
...asd-)\d(\.\w+)/;
str = str.replace(regex, "$11$2");
console.log(str);
Or if you're sure there won't be any other digits in the string:
var str = 'asd-0.testing';
var regex = /\d/;
str = str.replace(regex, "1");
console.log(str);
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DLL and LIB files - what and why?
...asier to just include all the code in a single executable? And what's the difference between DLL's and LIB's?
5 Answers
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Why can't we autowire static fields in spring?
...r. Also you cannot create several instances of a given class, each with a different dependency being injected (because the field is implicitly shared and creates global state - also evil).
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How to get access to HTTP header information in Spring MVC REST controller?
... Should mention, you'll get a 400 bad request error as a response in case if request will not contain such header. More flexible way is direct access to request headers as described in: stackoverflow.com/a/28209710/1828296
– lospejos
Jul 14 '16 at 13:43
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How do I keep Python print from adding newlines or spaces? [duplicate]
In python, if I say
15 Answers
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