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Should you always favor xrange() over range()?
...ipping implicit fixer: idioms
RefactoringTool: Skipping implicit fixer: ws_comma
--- range_test.py (original)
+++ range_test.py (refactored)
@@ -1,7 +1,7 @@
for x in range(20):
- a=range(20)
+ a=list(range(20))
b=list(range(20))
c=[x for x in range(20)]
d=(x for x in range(20)...
Hidden features of Scala
...g pattern matching and extractors. Whenever you define a val or var, what comes after the keyword is not simply an identifier but rather a pattern. That's why this works:
val (a, b, c) = (1, 3.14159, "Hello, world")
The right hand expression creates a Tuple3[Int, Double, String] which can match...
Is it possible to define more than one function per file in MATLAB, and access them from outside tha
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How do I use vim registers?
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Registers in Vim let you run actions or commands on text stored within them. To access a register, you type "a before a command, where a is the name of a register. If you want to copy the current line into register k, you can type
"kyy
Or you can append to a r...
Tablix: Repeat header rows on each page not working - Report Builder 3.0
... this video shows how to set it exactly as the answer described: youtube.com/watch?v=WAO819-gkKw
– shrimp rice
Oct 9 '13 at 16:11
8
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How to saveHTML of DOMDocument without HTML wrapper?
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Note that this is not quite perfect. See stackoverflow.com/questions/29493678/…
– Josh Levinson
Sep 10 '15 at 16:37
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What are good uses for Python3's “Function Annotations”
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I think this is actually great.
Coming from an academic background, I can tell you that annotations have proved themselves invaluable for enabling smart static analyzers for languages like Java. For instance, you could define semantics like state restrictio...
Why can't I inherit static classes?
...en with static methods (as they are defined on type level). How should the compiler decide to select the method to invoke?
(littleguru)
And as a valuable idea, littleguru has a partial "workaround" for this issue: the Singleton pattern.
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Label encoding across multiple columns in scikit-learn
....apply(LabelEncoder().fit_transform)
EDIT2:
In scikit-learn 0.20, the recommended way is
OneHotEncoder().fit_transform(df)
as the OneHotEncoder now supports string input.
Applying OneHotEncoder only to certain columns is possible with the ColumnTransformer.
EDIT:
Since this answer is over a ...
Advantage of switch over if-else statement
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Use switch.
In the worst case the compiler will generate the same code as a if-else chain, so you don't lose anything. If in doubt put the most common cases first into the switch statement.
In the best case the optimizer may find a better way to generate the...