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Locking a file in Python
...(well, Skip Montanaro's) implementation - pylockfile - Very similar to the ones mentioned in previous comments, but still worth taking a look.
– jweyrich
Dec 19 '14 at 13:40
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How do I get the current version of my iOS project in code?
...Application this will also allow to replace static calls with the instance ones.
– Zapko
Dec 9 '16 at 1:03
@Zapko - I ...
What is the Difference Between read() and recv() , and Between send() and write()?
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This is incorrect, there's one other difference in case of datagrams of 0 length - If a zero-length datagram is pending, read(2) and recv() with a flags argument of zero provide different behavior. In this circumstance, read(2) has...
Why is Maven downloading the maven-metadata.xml every time?
...tory>
<id>central</id>
<url>http://gotoNexus</url>
<snapshots>
<enabled>true</enabled>
<updatePolicy>always</updatePolicy>
</snapshots>
<releases>
<enab...
How to prevent scrollbar from repositioning web page?
...-aligned DIV. Now, some pages need scrolling, some don't. When I move from one type to another, the appearance of a scrollbar moves the page a few pixels to the side. Is there any way to avoid this without explicitly showing the scrollbars on each page?
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Algorithm to calculate the number of divisors of a given number
... sieve, you will have a much better factoring method than with the sieve alone.
And this is just one of a large number of techniques that have been developed. This is a fairly simple one. It would take you a long time to learn, say, enough number theory to understand the factoring techniques base...
How do I use a compound drawable instead of a LinearLayout that contains an ImageView and a TextView
...tool against my code. It came up with a lot of good suggestions, but this one I cannot understand.
4 Answers
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How to drop a PostgreSQL database if there are active connections to it?
...our DB
AND procpid <> pg_backend_pid();
Once you disconnect everyone you will have to disconnect and issue the DROP DATABASE command from a connection from another database aka not the one your trying to drop.
Note the renaming of the procpid column to pid. See this mailing list thread.
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What happens if you static_cast invalid value to enum class?
...cuted, its condition is evaluated and compared with each case constant. If one of the case constants is equal to the value of the condition, control is passed to the statement following the matched case label. If no case constant matches the condition, and if there is a default label, control passes...
SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
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The solutions above though they will get the job done do so at the risk of dropping user permissions. I prefer to do my create or replace views or stored procedures as follows.
IF NOT EXISTS (SELECT * FROM sys.views WHERE object_id = OBJECT_ID(N'[dbo].[vw_myView]'))
EXE...