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Provide an image for WhatsApp link sharing
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392
2020 standards
It takes a few steps to get the perfect preview for WhatsApp, Twitter, Facebook...
What's a correct and good way to implement __hash__()?
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Mark Amery
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answered May 25 '10 at 22:59
John MillikinJohn Millikin
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Best way to test SQL queries [closed]
..._value) > 10
and ( select count(distinct year) from month_value) > 3
and ... more tests
then 'passed' else 'failed' end );
Now let's test it's consecutive:
select concat( '(absolute_month)s are consecutive: ',
case when ( select count(*) from cm_absolute_month a join cm_absolute_mont...
How to increase editor font size?
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edited Aug 31 '16 at 0:37
Suragch
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What do “branch”, “tag” and “trunk” mean in Subversion repositories?
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JoGusto
72377 silver badges77 bronze badges
answered Aug 19 '08 at 13:35
Jon LimjapJon Limjap
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Prevent body scrolling but allow overlay scrolling
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answered Feb 14 '12 at 16:23
Fabrizio CalderanFabrizio Calderan
103k2323 gold badges148148 silver badges155155 bronze badges
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X-Frame-Options Allow-From multiple domains
... MDN has removed their deprecation comment. Here's a similar comment from W3C's Content Security Policy Level
The frame-ancestors directive obsoletes the X-Frame-Options header. If a resource has both policies, the frame-ancestors policy SHOULD be enforced and the X-Frame-Options policy SHOULD ...
How can I define colors as variables in CSS?
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235
CSS supports this natively with CSS Variables.
Example CSS file
:root {
--main-color:#06c...
How do I spool to a CSV formatted file using SQLPLUS?
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30
If you are using 12.2, you can simply say
set markup csv on
spool myfile.csv
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Python - List of unique dictionaries
... the list
In Python2.7
>>> L=[
... {'id':1,'name':'john', 'age':34},
... {'id':1,'name':'john', 'age':34},
... {'id':2,'name':'hanna', 'age':30},
... ]
>>> {v['id']:v for v in L}.values()
[{'age': 34, 'id': 1, 'name': 'john'}, {'age': 30, 'id': 2, 'name': 'hanna'}]
In Python3
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