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Is there a benefit to defining a class inside another class in Python?
...andard classes, is harder to read code, harder to understand code, and odd errors that are terribly difficult to understand without being intimately familiar with why the 'class' scope is entirely different to any other python scope.
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How to retry after exception?
...s = 3
for i in range(tries):
try:
do_the_thing()
except KeyError as e:
if i < tries - 1: # i is zero indexed
continue
else:
raise
break
share
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How to kill/stop a long SQL query immediately?
...KILL 114 - here 114 is the SPID value of my suspended query. I get the error shon below: Please guide. Msg 102, Level 15, State 1, Line 2 Incorrect syntax near '114'.
– Code Buster
Jun 6 '16 at 10:40
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Force LF eol in git repo and working copy
...LF line-endings, neither on checkout nor on checkin.
# - Detect whitespace errors.
# - Exposed by default in `git diff --color` on the CLI.
# - Validate with `git diff --check`.
# - Deny applying with `git apply --whitespace=error-all`.
# - Fix automatically with `git apply --whitespace=fix`...
PostgreSQL Crosstab Query
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This does not work for me, for postgresql. I get the error ERROR: 42803: aggregate function calls may not be nested
– Audrey
Nov 12 '14 at 12:05
1
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Does free(ptr) where ptr is NULL corrupt memory?
...gal in C++.
BTW, freeing memory twice usually causes some kind of runtime error, so it does not corrupt anything.
CASCADE DELETE just once
...s(1);
INSERT 0 1
-- restricting works
testing=# delete from a where id=1;
ERROR: update or delete on table "a" violates foreign key constraint "b_id_fkey" on table "b"
DETAIL: Key (id)=(1) is still referenced from table "b".
-- find the name of the constraint
testing=# \d b;
Table "public...
Format bytes to kilobytes, megabytes, gigabytes
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it has 2 errors - add 1 to (at least small) files size - not working with 0 (return NAN)
– maazza
Aug 31 '12 at 10:35
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Django migration strategy for renaming a model and relationship fields
...ions.RenameField('YetAnotherModel', 'foo', 'bar')
]
You may get some errors if you don't update the names where it's imported e.g. admin.py and even older migration files (!).
Update: As ceasaro mentions, newer versions of Django are usually able to detect and ask if a model is renamed. So tr...
How to set tint for an image view programmatically in android?
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@Hardik has it right. The other error in your code is when you reference your XML-defined color. You passed only the id to the setColorFilter method, when you should use the ID to locate the color resource, and pass the resource to the setColorFilter method...