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How to measure time in milliseconds using ANSI C?
...times it is called a tick counter) which counts ticks with a predefined frequency, so if you have a ticks value and the frequency is known, you can easily convert ticks to elapsed time. It is actually not guaranteed that a monotonic clock reflects the current system time in any way, it may also coun...
How does this giant regex work?
...file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
...
Stopping scripters from slamming your website
...you happen to reload the same page too often, post successive comments too quickly, or something else that triggers an alarm, make them prove they're human. In your case, this would probably be constant reloads of the same page, following every link on a page quickly, or filling in an order form too...
How to merge YAML arrays?
...
If the aim is to run a sequence of shell commands, you may be able to achieve this as follows:
# note: no dash before commands
some_stuff: &some_stuff |-
a
b
c
combined_stuff:
- *some_stuff
- d
- e
- f
This is equivalent t...
What is private bytes, virtual bytes, working set?
...
The short answer to this question is that none of these values are a reliable indicator of how much memory an executable is actually using, and none of them are really appropriate for debugging a memory leak.
Private Bytes refer to the amount of mem...
What are some compelling use cases for dependent method types?
...lem? Nested types in Scala are dependent on their enclosing instance. Consequently, in the absence of dependent method types, attempts to use them outside of that instance can be frustratingly difficult. This can turn designs which initially seem elegant and appealing into monstrosities which are ni...
Approximate cost to access various caches and main memory?
...THESE VALUES ARE ROUGH APPROXIMATIONS. THEY DEPEND ON
CORE AND UNCORE FREQUENCIES, MEMORY SPEEDS, BIOS SETTINGS,
NUMBERS OF DIMMS, ETC,ETC..YOUR MILEAGE MAY VARY."
EDIT: I should highlight that, as well as timing/cycle information, the above intel document addresses much more (extremely) usefu...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...ng(&s, length);
break;
case RMAppReceiptASN1TypeOpaqueValue:
_opaqueValue = data;
break;
case RMAppReceiptASN1TypeHash:
_hash = data;
break;
case RMAppReceiptASN1TypeInAppPurchaseReceipt:
{
RM...
What is the best way to stop people hacking the PHP-based highscore table of a Flash game
...-score)))
The PHP code on the server checks the token to make sure the request came from a valid game instance, then decrypts the encrypted high score, checking to make sure the high-score matches the SHA1 of the high-score (if you skip this step, decryption will simply produce random, likely very...
What is the difference between SAX and DOM?
... the ease of navigation.
Slower at run time.
SAX
Event based parser (Sequence of events).
SAX parses the file as it reads it, i.e. parses node by node.
No memory constraints as it does not store the XML content in the memory.
SAX is read only i.e. can’t insert or delete the node.
Use SAX parse...