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Python: Bind an Unbound Method?
...by calling their __get__ method:
bound_handler = handler.__get__(self, MyWidget)
Here's R. Hettinger's excellent guide to descriptors.
As a self-contained example pulled from Keith's comment:
def bind(instance, func, as_name=None):
"""
Bind the function *func* to *instance*, with eith...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...resql.org/wiki/Transactional_DDL_in_PostgreSQL:_A_Competitive_Analysis provides an overview of this issue from PostgreSQL's perspective.
Is DDL transactional according to this document?
PostgreSQL - yes
MySQL - no; DDL causes an implicit commit
Oracle Database 11g Release 2 and above - by default...
Can JSON start with “[”?
...r seeing some examples of JSON and comparing them, I really like how they did it. Regarding json4j, perhaps you can submit a bug report to the json4j library's creator.
– Richard Marskell - Drackir
Feb 17 '11 at 22:04
...
MySQL DISTINCT on a GROUP_CONCAT()
...H(REPLACE(tableName.categories, ' ', ''))+numbers.n-1
) s;
Please see fiddle here.
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How to get div height to auto-adjust to background size?
...ion would be to include the image under an img element set to visibility: hidden;. Then make the background-image of the surrounding div the same as the image.
This will set the surrounding div to the size of the image in the img element but display it as a background.
<div style="background-...
How to create REST URLs without verbs?
... @Justice @Breton The more important difference is that PUT is idempotent while POST is not. Usually you should put as much constraints on what you provide as the result as possible. Sticking with PUT gives more information to the client of the service.
– Andrey Vla...
How do I deep copy a DateTime object?
...r can next place an order. Calling the function to create a copy produces side effects I don't want.
– Billy ONeal
Apr 5 '10 at 16:19
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Unicode, UTF, ASCII, ANSI format differences
...e format of strings in .NET, and generally in Windows and Java. Values outside the Basic Multilingual Plane (BMP) are encoded as surrogate pairs. These used to be relatively rarely used, but now many consumer applications will need to be aware of non-BMP characters in order to support emojis.
UTF-8:...
git --git-dir not working as expected
... this worked! Agreed that this is confusing. Its called Keep It Simple Stupid. You can almost always allow flexibility while at the same time giving defaults that make the most sense VS having a command not work at all.
– Nay
Jan 18 '12 at 6:34
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Calling shell functions with xargs
...ould be simplified to
bash -c 'echo_var "{}"'
moving the {} directly inside it. But it's vulnerable to command injection as pointed out by @Sasha.
Here is an example why you should not use the embedded format:
$ echo '$(date)' | xargs -I {} bash -c 'echo_var "{}"'
Sun Aug 18 11:56:45 CDT 2019
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