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Alternatives to JavaScript
...tself - it's a perfectly good prototyped and dynamic language. If you come from an OO background there's a bit of a learning curve, but it's not the language's fault.
Most people assume that Javascript is like Java because it has similar syntax and a similar name, but actually it's a lot more like ...
How do I implement __getattribute__ without an infinite recursion error?
...ive hell you were in before.
Ipython output with code in foo.py:
In [1]: from foo import *
In [2]: d = D()
In [3]: d.test
Out[3]: 0.0
In [4]: d.test2
Out[4]: 21
Update:
There's something in the section titled More attribute access for new-style classes in the current documentation, where the...
Difference between const & const volatile
... register results in an actual read of the hardware - using a cached value from a previous read won't tell you about changes in the hardware state.
A quick example:
unsigned int const volatile *status_reg; // assume these are assigned to point to the
unsigned char const volatile *recv_reg; // ...
Difference between Java Enumeration and Iterator
...s an explanation of the differences between Enumeration:
Iterators differ from
enumerations in two ways:
Iterators allow the caller to remove elements from the underlying
collection during the iteration with
well-defined semantics.
Method names have been improved.
The bottom line is, both Enumer...
Copy files without overwrite
...st can't seem to find a way on the command line to say "copy all the files from directory A to directory B, but if the file already exists in directory B, don't overwrite it, no matter which file is newer, and don't prompt me."
...
Convert object string to JSON
...
If the string is from a trusted source, you could use eval then JSON.stringify the result. Like this:
var str = "{ hello: 'world', places: ['Africa', 'America', 'Asia', 'Australia'] }";
var json = JSON.stringify(eval("(" + str + ")"));
Not...
Script parameters in Bash
...self.
The arguments are seperated by spaces, so if you would provide the -from and -to in the command, they will end up in these variables too, so for this:
./ocrscript.sh -from /home/kristoffer/test.png -to /home/kristoffer/test.txt
You'll get:
$0 # ocrscript.sh
$1 # -from
$2 # /home/...
Hashing a string with Sha256
...ta you're hashing. Hashing the two bytes "Hi" will give a different result from hashing the three bytes "Hi". You'll have to decide which you want to do. (Presumably you want to do whichever one your friend's PHP code is doing.)
For ASCII text, Encoding.UTF8 will definitely be suitable. If you're a...
What are the differences between LDAP and Active Directory?
...the specifics. I found this document with a very detailed evaluation of AD from an LDAP perspective.
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edited Sep 8 '11 at 15:38
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Server is already running in Rails
... think this is doing the same thing here. That file was probably left over from a crash.
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