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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...
Pair/tuple data type in Go
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edited Mar 13 '18 at 10:29
Ivan Aracki
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answere...
Label encoding across multiple columns in scikit-learn
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21 Answers
21
Active
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What does the caret (^) character mean?
... than one parent. HEAD^ is short for HEAD^1, and you can also address HEAD^2 and so on as appropriate.
You can get to parents of any commit, not just HEAD. You can also move back through generations: for example, master~2 means the grandparent of the tip of the master branch, favoring the first par...
val-mutable versus var-immutable in Scala
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answered Jul 8 '12 at 21:30
Daniel C. SobralDaniel C. Sobral
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How to split a file into equal parts, without breaking individual lines? [duplicate]
...
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...
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...
How can I get Knockout JS to data-bind on keypress instead of lost-focus?
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299
<body>
<p>First name: <input data-bind="value: firstName, valueUpdate: ...
Check if value already exists within list of dictionaries?
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273
Here's one way to do it:
if not any(d['main_color'] == 'red' for d in a):
# does not exist...