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How do I change screen orientation in the Android emulator?
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26 Answers
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How do you use “
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200
<<- is most useful in conjunction with closures to maintain state. Here's a section fro...
How to convert a JSON string to a Map with Jackson JSON
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325
[Update Sept 2020] Although my original answer here, from many years ago, seems to be helpful a...
How can I make space between two buttons in same div?
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12 Answers
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Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
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621
The error message says that if you're passing scalar values, you have to pass an index. So you...
What is the difference between an int and an Integer in Java and C#?
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26 Answers
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How to split a file into equal parts, without breaking individual lines? [duplicate]
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wc -l xyzzy.*
This outputs:
Total lines = 70
Lines per file = 12
12 xyzzy.aa
12 xyzzy.ab
12 xyzzy.ac
12 xyzzy.ad
12 xyzzy.ae
10 xyzzy.af
70 total
More recent versions of split allow you to specify a number of CHUNKS with the -n/--number option. You can therefore use som...
HashSet vs LinkedHashSet
...public LinkedHashSet(Collection<? extends E> c) {
super(Math.max(2*c.size(), 11), .75f, true); // <-- boolean dummy argument
addAll(c);
}
And (one example of) a HashSet constructor that takes a boolean argument is described, and looks like this:
/**
* Constructs a new, empty l...
How to parse/read a YAML file into a Python object? [duplicate]
... name: Node 1
branch1-1:
name: Node 1-1
branch2:
name: Node 2
branch2-1:
name: Node 2-1
And you've installed PyYAML like this:
pip install PyYAML
And the Python code looks like this:
import yaml
with open('tree.yaml') as f:
# use saf...
Delete column from SQLite table
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206
From: http://www.sqlite.org/faq.html:
(11) How do I add or delete columns from an existing...