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Extracting the last n characters from a ruby string
...a one liner, you can put a number greater than the size of the string:
"123".split(//).last(5).to_s
For ruby 1.9+
"123".split(//).last(5).join("").to_s
For ruby 2.0+, join returns a string
"123".split(//).last(5).join
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How to deserialize a JObject to .NET object
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3 Answers
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How to round a number to significant figures in Python
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You can use negative numbers to round integers:
>>> round(1234, -3)
1000.0
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.0232)...
Accessing dict keys like an attribute?
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313
The best way to do this is:
class AttrDict(dict):
def __init__(self, *args, **kwargs):
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How to save and load cookies using Python + Selenium WebDriver
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Ratmir Asanov
4,96344 gold badges1717 silver badges3434 bronze badges
answered Feb 25 '13 at 0:41
Ali-Akber SaifeeAli-A...
What is a 'semantic predicate' in ANTLR?
... of semantic predicates in Antlr4
Semantic predicates in ANTLR4?
ANTLR 3
A semantic predicate is a way to enforce extra (semantic) rules upon grammar
actions using plain code.
There are 3 types of semantic predicates:
validating semantic predicates;
gated semantic predicates;
disambiguating...
What does the number in parentheses shown after Unix command names in manpages mean?
For example: man(1) , find(3) , updatedb(2) ?
7 Answers
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Common xlabel/ylabel for matplotlib subplots
...cific case:
import matplotlib.pyplot as plt
fig, ax = plt.subplots(nrows=3, ncols=3, sharex=True, sharey=True, figsize=(6, 6))
fig.text(0.5, 0.04, 'common X', ha='center')
fig.text(0.04, 0.5, 'common Y', va='center', rotation='vertical')
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How to make Sequelize use singular table names
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3 Answers
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