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Python 3: UnboundLocalError: local variable referenced before assignment [duplicate]
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@user7344209 Indeed. Answers should ideally explain what's happening in the actual example shown, and how to fix that, rather than suggesting a whole different approach.
– Stephen Holt
Sep 19 '18 at 20:58
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Lisp in the real world
...re almost every time following distinctive and not-so-average technologies/ideas.
– Luka Ramishvili
Feb 20 '12 at 8:08
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jQuery and AJAX response header
...hanks so much for the response, but that's still returning null. Any other ideas?
– Shane
Oct 13 '09 at 17:11
maybe yo...
Android XML Percent Symbol
...ause it no longer allows non-positional format specifiers.
Here are a few ideas how you can include the %-symbol in your resource strings.
If you don't need any format specifiers or substitutions in your string you can simply make use of the formatted attribute and set it to false:
<string for...
SQL: deleting tables with prefix
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Some of the earlier answers were very good.
I have pulled together their ideas with some
notions from other answers on the web.
I needed to delete all tables starting with 'temp_'
After a few iterations I came up with this block of code:
-- Set up variable to delete ALL tables starting with 'tem...
Duplicating a MySQL table, indices, and data
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To give a rough idea, the insert operation took 27mins on a table of 16M rows (with 5 indexes) on a AWS db.r3.large instance
– hello_harry
Apr 19 '17 at 16:00
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Remove icon/logo from action bar on android
... a search view and click it/expand it, the my app icon/logo reappears. Any ideas?
– acrespo
Jul 7 '15 at 14:44
@acresp...
Why doesn't Java offer operator overloading?
...re below, for different cases, the "same" code in Java and C++, to have an idea of which kind of coding style is clearer.
Natural comparisons:
// C++ comparison for built-ins and user-defined types
bool isEqual = A == B ;
bool isNotEqual = A != B ;
bool isLesser = A...
List of zeros in python [duplicate]
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This is a nice idea, but it doesn't work for lists longer than 9 zeroes. Easily remedied (though it'll never work for arbitrary lists), but then you run into a bigger problem, which is that it stores T_N zeroes in memory. It's better to use...
How to read a large file line by line?
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this is a bad idea with bigger files as whole file is being read to an array at once
– Flash Thunder
Nov 30 '17 at 19:03