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What is ActiveMQ used for - can we apply messaging concept using a Database?
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It is used to reliably communicate between two distributed processes.
Yes, you could store messages in a Database to communicate between two processes, but, as soon as the message is received you'd have to DELETE the message, That means a row IN...
Change type of varchar field to integer: “cannot be cast automatically to type integer”
...efore converting.
This shoud've been obvious from an error message if the command was run in psql, but it's possible PgAdmin-III isn't showing you the full error. Here's what happens if I test it in psql on PostgreSQL 9.2:
=> CREATE TABLE test( x varchar );
CREATE TABLE
=> insert into test(x...
Bootstrap close responsive menu “on click”
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Changing Font Size For UITableView Section Headers
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The case against checked exceptions
... Anders Hejlsberg, the MS genius behind .NET and C#.
http://www.artima.com/intv/handcuffs.html
Fan though I am of Hejlsberg and his work, this argument has always struck me as bogus. It basically boils down to:
"Checked exceptions are bad because programmers just abuse them by always catc...
What is an alternative to execfile in Python 3?
...ce count goes to 0, only circular references may delay this (stackoverflow.com/questions/9449489/…). In that case that should happen right after read() returns. And file objects are closed on deletion (NB: I realize this link explicitly says "always close files", which is indeed good practice to f...
Is it feasible to do (serious) web development in Lisp? [closed]
...mming language, especially in such a powerful one as Lisp (be it Scheme or Common Lisp). But is it practical to use it for web development? If so, what should be a good starting point? Where can be found the proper resources (tools, libraries, documentation, best practices, examples, etc.) for a pro...
Are Java static initializers thread safe?
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Best approach to remove time part of datetime in SQL Server
... column invalidates index usage. See number 2 here: http://www.simple-talk.com/sql/t-sql-programming/ten-common-sql-programming-mistakes/
Now, this does have an example of later SQL Server optimiser versions managing CAST to date correctly, but generally it will be a bad idea ...
Edit, Sep 2018, f...
What is the meaning of “this” in Java?
...ve a proper main). For help with the main method, please see stackoverflow.com/questions/146576/….
– Joachim Sauer
Sep 12 '14 at 12:40
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