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How to automatically reload a page after a given period of inactivity
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222
If you want to refresh the page if there is no activity then you need to figure out how to def...
How to delete a row by reference in data.table?
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125
Good question. data.table can't delete rows by reference yet.
data.table can add and delete co...
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
12
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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...
How do I temporarily disable triggers in PostgreSQL?
...ion:
SET session_replication_role = DEFAULT;
Source: http://koo.fi/blog/2013/01/08/disable-postgresql-triggers-temporarily/
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Storing Python dictionaries
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Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Aug 17 '11 at 22:14
MartyMarty
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Python import csv to list
I have a CSV file with about 2000 records.
13 Answers
13
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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...