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How do I retrieve the number of columns in a Pandas data frame?
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From Review: Hi, this post does not seem to provide a quality answer to the question. Please either edit your answer and improve it, or just post it as a comment.
– sɐunıɔןɐqɐp
Jan 29 '19 at 7:36
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Collection that allows only unique items in .NET?
...ooking for. From MSDN (emphasis added):
The HashSet<T> class provides high-performance set operations. A set is a collection that contains no duplicate elements, and whose elements are in no particular order.
Note that the HashSet<T>.Add(T item) method returns a bool -- true if the...
curl_exec() always returns false
...ween two development environments with self-assigned certificates.
With valid certificates there is no need to set VERIFYHOST and VERIFYPEER to false because the curl_exec($ch) method will work and return the response you expect.
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Use gulp to select and move directories and their files
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As a note for anyone else who did this, make sure you don't have the read option in src set to false (it's set to true by default).
– yndolok
Jun 11 '14 at 18:27
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Java Persistence / JPA: @Column vs @Basic
... @Basic(optional) is (should be) checked on runtime by persistence provider before saving to DB. @Column is a column definition in database and is used for schema generation : stackoverflow.com/questions/2899073/…
– Piotr Gwiazda
Jun 16 '10 at 10:30
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Which is better, number(x) or parseFloat(x)?
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I would not consider whitespace=>0 behaviour of Number() as "weird" I would even consider it as more expected, whitespace is an empty value but it is not null/undefined => 0 is a nice result. Big (+) for you for the showcases anyway :)...
How to show first commit by 'git log'?
...he earliest date in bar.git). At some point the developers of “bar” decide to incorporate libfoo into their project by using a subtree merge. Prior to this merge it might have been trivial to determine the “first” commit in bar.git (there was probably only one root commit). After the merge, ...
Difference between int32, int, int32_t, int8 and int8_t
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You said "for a 64-bit implementation, (int) should probably be 64 bits". In practice, int is 32-bits on all common 64-bit platforms including Windows, Mac OS X, Linux, and various flavors of UNIX. One exception is Cray / UNICOS b...
Gradle - getting the latest release version of a dependency
...ELEASE/LATEST anymore. But it's of course bad practice to use such version identifiers.
– khmarbaise
Apr 29 '12 at 14:26
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Psql list all tables
...UERY **********
SELECT d.datname as "Name",
pg_catalog.pg_get_userbyid(d.datdba) as "Owner",
pg_catalog.pg_encoding_to_char(d.encoding) as "Encoding",
d.datcollate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privilege...