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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
... and boolean False are still properly returned for comparisons.
In Python 3.x True and False are keywords and will always be equal to 1 and 0.
Under normal circumstances in Python 2, and always in Python 3:
False object is of type bool which is a subclass of int:
object
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int
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bool
It...
How to get method parameter names?
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363
Take a look at the inspect module - this will do the inspection of the various code object pro...
What does the number in parentheses shown after Unix command names in manpages mean?
For example: man(1) , find(3) , updatedb(2) ?
7 Answers
7
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How to parse float with two decimal places in javascript?
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938
You can use toFixed() to do that
var twoPlacedFloat = parseFloat(yourString).toFixed(2)
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Reverse / invert a dictionary mapping
...Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
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Android ViewPager with bottom dots
I want to add 3 bottom dots to my ViewPager, like this.
10 Answers
10
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How to use Active Support core extensions
I have Active Support 3.0.3 installed and Rails 3.0.3 with Ruby 1.8.7.
5 Answers
5
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GridLayout and Row/Column Span Woe
...t_gravity="fill_vertical"
android:layout_rowSpan="4"
android:text="3" />
<Button
android:layout_columnSpan="3"
android:layout_gravity="fill"
android:layout_rowSpan="2"
android:text="4" />
<Button
android:layout_columnSpan="3"
android:layout_gravity="fill...
How to tell which version of a gem a rails app is using
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173
In Rails 3 and Rails 4, use bundle show
In Rails 2, rake gems will print out what gems, depende...
Python: List vs Dict for look up table
...M. Kuchling in Beautiful Code, the implementation tries to keep the hash 2/3 full, so you might waste quite some memory.
If you do not add new entries on the fly (which you do, based on your updated question), it might be worthwhile to sort the list and use binary search. This is O(log n), and is ...