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Why is using 'eval' a bad practice?
...s, using eval is a bad practice. Just to name a few reasons:
There is almost always a better way to do it
Very dangerous and insecure
Makes debugging difficult
Slow
In your case you can use setattr instead:
class Song:
"""The class to store the details of each song"""
attsToStore=('Name...
On localhost, how do I pick a free port number?
... bind to a specific port, or bind to port 0, e.g. sock.bind(('', 0)). The OS will then pick an available port for you. You can get the port that was chosen using sock.getsockname()[1], and pass it on to the slaves so that they can connect back.
...
Pass all variables from one shell script to another?
...
MESSAGE="hello"
export MESSAGE
./b.py
b.py:
#!/usr/bin/python
import os
print 'The message is:', os.environ['MESSAGE']
Sourcing:
Instead we could source like this:
a.sh:
#!/bin/sh
MESSAGE="hello"
. ./b.sh
b.sh:
#!/bin/sh
echo "The message is: $MESSAGE"
Then:
$ ./a.sh
The message...
CSS customized scroll bar in div
...wser compatibility.
Scroll Bar CSS Support
Currently, there exists no cross-browser scroll bar CSS styling definitions. The W3C article I mention at the end has the following statement and was recently updated (10 Oct 2014):
Some browsers (IE, Konqueror) support the non-standard properties 's...
View's getWidth() and getHeight() returns 0
...o you need a workaround for waiting for this phase. There a are different possible solutions to this:
1. Listen to Draw/Layout Events: ViewTreeObserver
A ViewTreeObserver gets fired for different drawing events. Usually the OnGlobalLayoutListener is what you want for getting the measurement, so the ...
What killed my process and why?
...
That's almost definitely it. I saw this a lot when TAing. Many students would forget to free their objects, and the apps would eventually reach 3GB of virtual memory usage. As soon as it hit that point it was killed.
...
import module from string variable
...d be avaliable on pypi for < python2.7
– Jeffrey Jose
Aug 19 '12 at 12:12
51
For anyone who's ...
How to upgrade Eclipse for Java EE Developers?
...o-date? Could user really upgrade 3.7 to 4.3 for example? What about all those plugins, that can break on newer platform?
– Paul Verest
Jun 28 '13 at 7:14
...
Linux: is there a read or recv from socket with timeout?
...tes. It
accepts a timeval structure with the
number of seconds and microseconds
specifying the limit on how long to
wait for an input operation to
complete. If a receive operation has
blocked for this much time without
receiving additional data, it shall
return with a partial count o...
What does -fPIC mean when building a shared library?
...
PIC stands for Position Independent Code
and to quote man gcc:
If supported for the target machine, emit position-independent code, suitable for dynamic linking and avoiding any limit on the size of the global offset table. This option ...