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How to determine whether a Pandas Column contains a particular value
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the found.count() will contains number of matches
And if it is 0 then means string was not found in the Column.
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Python assigning multiple variables to same value? list behavior
...nfused by the behavior, I expect to reassign the values list separately, I mean b[0] and c[0] equal 0 as before.
9 Answers...
What are best practices for multi-language database design? [closed]
...table with a single column called id :D . To explain, each id represents a meaning to which you can attach words from any language in a relational table, so you get two tables, meaning (id) and word (id, meaning_id), the id in the word table represents the word id, the id in the meaning represents t...
Difference between “@id/” and “@+id/” in Android
...he + into layout_below as well as android:id is really fine, since The '+' means to create the symbol if it doesn't already exist as Tanmay Mandal mentioned in his nice (yet underrated) answer. Because of that, there is also no negative runtime effect (possibly an unmeasurably small increase in comp...
Is it possible to use argsort in descending order?
...gt;>> timeit (-avgDists).argsort()[:n]
1.93 µs ± 6.68 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
>>> timeit avgDists.argsort()[::-1][:n]
1.64 µs ± 3.39 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
>>> timeit avgDists.argsort()[-n:][::-1...
Immutable vs Mutable types
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What you explain means to me: mutable variables are passed by reference, immutable variables are passed by value. Is this correct ?
– Lorenz Meyer
Feb 3 '14 at 12:40
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What is href=“#” and why is it used?
On many websites I see links that have href="#" . What does it mean? What is it used for?
9 Answers
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jQuery: select an element's class and id at the same time?
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So basically its like : $("#a .b") means element with class b inside element with id a. $("#a.b") means element with class b and id a. The trick is the space between #a and .b
– Bhumi Singhal
Nov 14 '13 at 7:26
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What does it mean by select 1 from table?
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SELECT 1 FROM TABLE_NAME means, "Return 1 from the table". It is pretty unremarkable on its own, so normally it will be used with WHERE and often EXISTS (as @gbn notes, this is not necessarily best practice, it is, however, common enough to be noted,...
Restful way for deleting a bunch of items
...t is indicated that if you use http://example.com/resources DELETE, that means you are deleting the entire collection.
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