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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...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...the word "FooBar"
CHAR(6) = 6 bytes (no overhead)
VARCHAR(100) = 8 bytes (2 bytes of overhead)
CHAR(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same length (within two characters length difference).
Note: Microsoft SQL...
How to use ADB to send touch events to device using sendevent command?
... simulate tapping, it's:
input tap x y
You can use the adb shell ( > 2.3.5) to run the command remotely:
adb shell input tap x y
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How should I edit an Entity Framework connection string?
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Mosh Feu
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answered Mar 14 '11 at 15:21
Fabian Nicol...
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...
Check if value already exists within list of dictionaries?
...
273
Here's one way to do it:
if not any(d['main_color'] == 'red' for d in a):
# does not exist...
In java how to get substring from a string till a character c?
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edited May 28 '13 at 17:40
Anirudha
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$PHP_AUTOCONF errors on mac os x 10.7.3 when trying to install pecl extensions
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answered Mar 2 '12 at 2:29
Bob SprynBob Spryn
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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...