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Alternatives to gprof [closed]
...
@Norman: I made a profiler based on this, in C for DOS, around '93. I called it yet-another-performance-analyzer, and demo'ed it around at IEEE meetings, but that's as far as it went. There is a product from RotateRight called Zoom that's not too far o...
What is the difference between bottom-up and top-down?
...t somewhere, with some particular subproblem, and perhaps may adapt itself based on the results of those evaluations. In the general sense of "dynamic programming", you might try to cache these subproblems, and more generally, try avoid revisiting subproblems with a subtle distinction perhaps being ...
Understanding __get__ and __set__ and Python descriptors
...lue. So you could imagine using it to map an attribute to a field in a database, for example – a kind of ORM.
Another use might be refusing to accept a new value by throwing an exception in __set__ – effectively making the "attribute" read only.
What is instance and owner here? (in __get__)...
How to determine CPU and memory consumption from inside a process?
...ux. Here's an entry from Apple's documentation:
Note: Unlike most Unix-based operating systems, Mac OS X does not use a preallocated swap partition for virtual memory. Instead, it uses all of the available space on the machine’s boot partition.
So, if you want to know how much virtual memory...
How to get device make and model on iOS?
...de objectForKey:code];
if (!deviceName) {
// Not found on database. At least guess main device type from string contents:
if ([code rangeOfString:@"iPod"].location != NSNotFound) {
deviceName = @"iPod Touch";
}
else if([code rangeOfString:@"iPad"].lo...
Why does Java switch on contiguous ints appear to run faster with added cases?
... @AndrewBissell My guess is that the different behaviour is based on either (i) cross-architecture performance tests which have shown that the array of pointers is only efficient when the number of cases is larger than 18 or (ii) the code is profiled as it is run and the profiler dete...
What does the “yield” keyword do?
...appens with yield is significantly different than what happens in the list based approach. In many cases, the yield approach will be a lot more memory efficient and faster too. In other cases, this trick will get you stuck in an infinite loop, even though the original function works just fine. Read ...
Schema for a multilanguage database
...Method 4 (not listed):
Storing all the languages in a XML field in the database.
e.g
-- CREATE TABLE MyTable(myfilename nvarchar(100) NULL, filemeta xml NULL )
;WITH CTE AS
(
-- INSERT INTO MyTable(myfilename, filemeta)
SELECT
'test.mp3' AS myfilename
--,...
Fastest way to iterate over all the chars in a String
...et the entire buffer (at least on Android), but your indexing will be zero based. However, if you know that you don't have a substring, it will work fine.
– prewett
Apr 26 '14 at 16:54
...
What's so bad about Template Haskell?
...nless the developer allows it; if you find a function that generates a database interface and a JSON serialization interface, you can't say "No, I only want the database interface, thanks; I'll roll my own JSON interface"
Run time. TH code takes a relatively long time to run. The code is interpreted...