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What is ActiveMQ used for - can we apply messaging concept using a Database?
I looked it up and it used to send messages between 2 systems.
But why? Why wouldn't you just use a Database ?
There must be some feature that ActiveMQ has that Databases do not?
...
What is reflection and why is it useful?
... the same system (or itself).
For example, say you have an object of an unknown type in Java, and you would like to call a 'doSomething' method on it if one exists. Java's static typing system isn't really designed to support this unless the object conforms to a known interface, but using reflectio...
What is an alternative to execfile in Python 3?
It seems they canceled in Python 3 all the easy way to quickly load a script by removing execfile()
12 Answers
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Is it feasible to do (serious) web development in Lisp? [closed]
It obviously is possible to write almost any kind of application in almost any programming 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 ...
Merge PDF files
...ypdf or its successor PyPDF2:
A Pure-Python library built as a PDF toolkit. It is capable of:
* splitting documents page by page,
* merging documents page by page,
(and much more)
Here's a sample program that works with both versions.
#!/usr/bin/env python
import sys
try:
from PyPD...
How to Generate unique file names in C#
...age10.png") and if that fails (because the file already exists), I fall back to GUIDs.
Update:
Recently, I've also use DateTime.Now.Ticks instead of GUIDs:
var myUniqueFileName = string.Format(@"{0}.txt", DateTime.Now.Ticks);
or
var myUniqueFileName = $@"{DateTime.Now.Ticks}.txt";
The benefi...
Separating class code into a header and cpp file
...red Mar 6 '12 at 8:09
Ferenc DeakFerenc Deak
29.3k1313 gold badges8080 silver badges141141 bronze badges
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HSL to RGB color conversion
I am looking for a JavaScript / PHP algorithm to convert between HSL color to RGB.
19 Answers
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How to concatenate strings of a string field in a PostgreSQL 'group by' query?
I am looking for a way to concatenate the strings of a field within a group by query. So for example, I have a table:
14 An...
How do you test that a Python function throws an exception?
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Robert Siemer
23.9k77 gold badges6767 silver badges8282 bronze badges
answered Sep 24 '08 at 20:02
MoeMoe
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