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Remove non-utf8 characters from string
Im having a problem with removing non-utf8 characters from string, which are not displaying properly. Characters are like this 0x97 0x61 0x6C 0x6F (hex representation)
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Mark current Line, and navigate through marked lines
...rks and walk quickly from one to another.
– André Alçada Padez
Apr 19 '12 at 18:17
if you tell me this is impossible...
Does PostgreSQL support “accent insensitive” collations?
... unaccent() always substitutes a single letter:
SELECT unaccent('Œ Æ œ æ ß');
unaccent
----------
E A e a S
You will love this update to unaccent in Postgres 9.6:
Extend contrib/unaccent's standard unaccent.rules file to handle all
diacritics known to Unicode, and expand ligatures cor...
Returning the product of a list
... |
-------+-----------+-----------+-----------+-----------+
A 20.8 µs 13.3 µs 22.6 µs 39.6 µs
B 106 µs 95.3 µs 5.92 µs 26.1 µs
C 4.34 ms 3.51 ms 16.7 µs 38.9 µs
D 46.6 ms 38.5 ms 180 µs 216 µs
Result: ...
Select by partial string from a pandas DataFrame
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%timeit df2[df2['col'].str.contains('foo', regex=False)]
6.31 ms ± 126 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
2.8 ms ± 241 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
Avoid using regex-based search if you don't need it.
Addressing ValueErrors
Sometimes, perfo...
How do I efficiently iterate over each entry in a Java Map?
...rror Units
test3_UsingForEachAndJava8 avgt 10 0.308 ± 0.021 µs/op
test10_UsingEclipseMap avgt 10 0.309 ± 0.009 µs/op
test1_UsingWhileAndMapEntry avgt 10 0.380 ± 0.014 µs/op
test6_UsingForAndIterator avgt 10 0.387 ± 0.016 µs/op
test2_Us...
Copying files into the application folder at compile time
... answered Dec 8 '18 at 16:12
Ehsäɳ KhʌɳEhsäɳ Khʌɳ
3111 bronze badge
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Inline code in org-mode
...answered Apr 24 '13 at 8:49
François FévotteFrançois Févotte
14.2k44 gold badges3434 silver badges6363 bronze badges
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Get the distance between two geo points
...the two points, the larger the error compared to the exact Haversine formulæ.
– Laurent Grégoire
Aug 8 '19 at 8:31
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Find element's index in pandas Series
...randint(0,10,10000))
In [9]: %timeit s[s == 5]
1000 loops, best of 3: 203 µs per loop
In [12]: i = Index(s)
In [13]: %timeit i.get_loc(5)
1000 loops, best of 3: 226 µs per loop
As Viktor points out, there is a one-time creation overhead to creating an index (its incurred when you actually DO ...