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How to convert string representation of list to a list?
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Inspired from some of the answers above that work with base python packages I compared the performance of a few (using Python 3.7.3):
Method 1: ast
import ast
list(map(str.strip, ast.literal_eval(u'[ "A","B","C" , " D"]')))
# ['A', 'B', 'C', 'D']
import timeit
timeit.timeit(st...
C++: What is the size of an object of an empty class?
... shall have a non-zero size and shall occupy one or more bytes of storage. Base class sub-objects may have zero size.
ISO/IEC FDIS 14882:1998(E) intro.object
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where is gacutil.exe?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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postgresql: INSERT INTO … (SELECT * …)
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As Henrik wrote you can use dblink to connect remote database and fetch result. For example:
psql dbtest
CREATE TABLE tblB (id serial, time integer);
INSERT INTO tblB (time) VALUES (5000), (2000);
psql postgres
CREATE TABLE tblA (id serial, time integer);
INSERT INTO tblA
SE...
How to use Namespaces in Swift?
... the Apple dev forum:
Namespaces are not per-file; they're per-target (based on the
"Product Module Name" build setting). So you'd end up with something
like this:
import FrameworkA
import FrameworkB
FrameworkA.foo()
All Swift declarations are considered to be part of
some module, ...
Django: How to completely uninstall a Django app?
... the procedure for completely uninstalling a Django app, complete with database removal?
5 Answers
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How do you rename a table in SQLite 3.0?
...ut I assume that the following is also correct:
ALTER TABLE existing_database.existing_table
RENAME TO new_database.new_table;
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Python - 'ascii' codec can't decode byte
...g it with a u:
Python 2.7.2 (default, Jan 14 2012, 23:14:09)
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> "你好".encode("utf8")
Traceback (most recent call last):
File "<std...
jQuery Ajax calls and the Html.AntiForgeryToken()
...t matter if there are multiple requests per page, it'll be the same if the base page reloaded anyway.
– JeremyWeir
Dec 28 '15 at 10:58
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Using an ORM or plain SQL? [closed]
...ve some nice features. They can handle much of the dog-work of copying database columns to object fields. They usually handle converting the language's date and time types to the appropriate database type. They generally handle one-to-many relationships pretty elegantly as well by instantiating nest...