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Test whether a Ruby class is a subclass of another class
... different function for an operator used for declaring class relationships AND provide two different ways of doing it?
– Ben Gotow
Apr 16 '13 at 15:08
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converting double to integer in java
...wn number
No, round() will always round your double to the correct value, and then, it will be cast to an long which will truncate any decimal places. But after rounding, there will not be any fractional parts remaining.
Here are the docs from Math.round(double):
Returns the closest long to the a...
What are the “loose objects” that the Git GUI refers to?
...GUI , I get a popup message that refers to loose objects . I did git gc and that removed the message.
2 Answers
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Delete from the current cursor position to a given line number in vi editor
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To delete from a to b use
:a,bd
from current to b use
:,bd
(where a and b in code are replaced by your numbers)
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Passing HTML to template using Flask/Jinja2
I'm building an admin for Flask and SQLAlchemy, and I want to pass the HTML for the different inputs to my view using render_template . The templating framework seems to escape the html automatically, so all
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Spring: how do I inject an HttpServletRequest into a request-scoped bean?
... The problem is that when you test validators using MockMvc and this kind of injection you'll have problems. May be the other solution will be preferred in this case
– Neyko
Feb 25 '13 at 14:55
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BigDecimal equals() versus compareTo()
...hod considers two BigDecimal objects equal only if they are equal in value and scale (thus 2.0 is not equal to 2.00 when compared by this method).
In other words: equals() checks if the BigDecimal objects are exactly the same in every aspect. compareTo() "only" compares their numeric value.
As to...
How do I reference a Django settings variable in my models.py?
...ed: with environment variable DJANGO_SETTINGS_MODULE or with manage.py command line parameter --settings=.. Read more in docs: docs.djangoproject.com/en/2.0/topics/settings
– mirek
Feb 8 '18 at 20:51
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ALTER TABLE, set null in not null column, PostgreSQL 9.1
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Execute the command in this format
ALTER TABLE tablename ALTER COLUMN columnname SET NOT NULL;
for setting the column to not null.
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javascript window.location in new tab
...unless you're writing a browser extension. You could try using window.open and hoping that the user has their browser set to open new windows in new tabs.
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