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Factory Pattern. When to use factory methods?
...got someone that will need a variable number of workers. This person may know some info they need in the people they hire, but that's it.
So, when they need a new employee, they call the hiring agency and tell them what they need. Now, to actually hire someone, you need to know a lot of stuff - b...
Querying DynamoDB by date
...ps on the range key only. The hash key is required such that the service knows which partition to look in to find the data.
You can of course perform a scan operation to filter by the date value, however this would require a full table scan, so it is not ideal.
If you need to perform an indexed l...
How can I list ALL DNS records?
...nswer "${3:-any}"
else
dig +nocmd "$1" +noall +answer "${2:-any}"
fi
Now I use dg example.com to get a nice, clean list of DNS records, or dg example.com x to include a bunch of other popular subdomains.
grep -vE "${wild_ips}" filters out records that could be the result of a wildcard DNS ent...
vbscript output to console
...lly switches to CSCript if required
Dim CONS: Set CONS = New cCONSOLE
'// Now we can use the Consol object to write to and read from the console
With CONS
'// Simply write a line
.print "CSCRIPT Console demo script"
'// Arguments are passed through correctly, if present
.Print ...
Proper MIME type for OTF fonts
... I'm getting the same error as in the above question but I don't know where to put the MIME type "font/opentype"... Does this go in the header of the html page?
– Joe Hamilton
Sep 26 '13 at 21:15
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Checking if a variable is not nil and not zero in ruby
...h is a much lighter and widely used dependency than the full rails. Anyway now @ndn's response is the right one.
– rewritten
Jun 7 '17 at 19:42
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How do I automatically update a timestamp in PostgreSQL
...update_modified_column()
RETURNS TRIGGER AS $$
BEGIN
NEW.modified = now();
RETURN NEW;
END;
$$ language 'plpgsql';
Apply the trigger like this:
CREATE TRIGGER update_customer_modtime BEFORE UPDATE ON customer FOR EACH ROW EXECUTE PROCEDURE update_modified_column();
...
How to list imported modules?
...like 'import %s as %s' % (val.__name__, name) where the yield statement is now.
– André C. Andersen
May 7 '17 at 19:30
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What's the $unwind operator in MongoDB?
...s.funded_year"
} }
])
If we look at the funding_rounds array, we know that for each funding_rounds, there is a raised_amount and a funded_year field. So, unwind will for each one of the documents that are elements of the funding_rounds array produce an output document. Now, in this example,...
How does Facebook Sharer select Images and other metadata when sharing my URL?
...
Minimum image size is now 200x200px.
– Tr1stan
Jun 20 '13 at 16:49
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