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Differences between Octave and MATLAB? [closed]
I'm a programmer who knows Python, Ruby and some C who is trying to decide whether to learn GNU Octave or Matlab. I know that they have a lot in common , but it isn't clear to me how similar the syntax is or even the data structures are. The above link shows several examples where they are syntacti...
What is a “callback” in C and how are they implemented?
...k:
typedef void (*event_cb_t)(const struct event *evt, void *userdata);
Now, define a function that is used to register a callback:
int event_cb_register(event_cb_t cb, void *userdata);
This is what code would look like that registers a callback:
static void my_event_cb(const struct event *ev...
Combining two expressions (Expression)
...
@Aron now look at the date: the .NET framework visitor (ExpressionVisitor) did not exist back then; I have a related example on stackoverflow from a similar date where it implements the visitor manually: it is a lot of code.
...
T-SQL split string
...ings
http://www.sqlperformance.com/2012/08/t-sql-queries/splitting-strings-now-with-less-t-sql
https://sqlblog.org/2010/07/07/splitting-a-list-of-integers-another-roundup
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What is the difference between server side cookie and client side cookie?
...r=20
Accept: */*
SESSIONS: Server side cookies
Server side cookies are known as "sessions". The website in this case stores a single cookie on the browser containing a unique Session Identifier. Status information (foo=10 and bar=20 above) are stored on the server and the Session Identifier is us...
What is an AngularJS directive?
...
OK I have a better understanding now. One way to think about it is: 1. DSL's usually represent syntax trees 2. The HTML DOM is a DSL syntax tree but it's a rigid one: the tags are mostly rigidly designed and purposed, and not extensible. 3. AngularJS and th...
Checking for NULL pointer in C/C++ [closed]
...omparison and it reads clearly:
if(some_ptr){;}
This is clear if you know that some_ptr is a pointer type, but it may also look like an integer comparison:
if(some_ptr != 0){;}
This is clear-ish, in common cases it makes sense... But it's a leaky abstraction, NULL is actually 0 literal and...
Seeding the random number generator in Javascript
...algorithms that use 32-bit math, as it is directly compatible with JS.
Now, onward to the the generators. (I maintain the full list with references here)
sfc32 (Simple Fast Counter)
sfc32 is part of the PractRand random number testing suite (which it passes of course). sfc32 has a 128-bit s...
Vertical (rotated) text in HTML table
... the rule set to drop legacy Internet Explorer filter and rely more in the now standard transform property:
.box_rotate {
-webkit-transform: rotate(7.5deg); /* Chrome, Opera 15+, Safari 3.1+ */
-ms-transform: rotate(7.5deg); /* IE 9 */
transform: rotate(7.5deg); /* Firef...
What are the applications of binary trees?
...o. This gives us the next greatest value of the node we want to delete.
Now we copy all of 18's contents, except for the left and right pointers, and delete the original 18 node.
To create these images, I implemented an AVL tree, a self balancing tree, so that at any point in time, the tree ...