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Cookies vs. sessions
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Nice explaination . I use GUID in token to recognise individual users.
– Karthik
Jan 20 '16 at 8:14
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Regex lookahead, lookbehind and atomic groups
... a fixed length.
Atomic groups basically discards/forgets the subsequent tokens in the group once a token matches. Check this page for examples of atomic groups
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How to generate a create table script for an existing table in phpmyadmin?
...L_NOTES */;
The output is cluttered by a number of executional-condition tokens above and below. You can filter them out if you don't want them in the next step.
Step 4 (Optional), filter out those extra executional-condition tokens this way:
mysqldump --no-data --skip-comments --compact --host...
Can someone explain the dollar sign in Javascript?
.../watch?v=Acm-MD_6934
According to Ecma International Identifier Names are tokens that are interpreted according to the grammar given in the “Identifiers” section of chapter 5 of the Unicode standard, with some small modifications. An Iden
Inline functions vs Preprocessor macros
...values as in the case of functions.
Inline functions can be overloaded
The tokens passed to macros can be concatenated using operator ## called Token-Pasting operator .
Macros are generally used for code reuse where as inline functions are used to eliminate the time overhead (excess time) during fun...
How to integrate nodeJS + Socket.IO and PHP?
...p can broadcast messages to the socket. the socket will inspect the signed token, and if it passes, ti will then broadcast the message. this is good for preventing spam and ensure data integrity. so never post directly to the node socket from the client. instead post to php app with ajax, then relay...
How to Free Inode Usage?
...arge number of inodes used even if the disk is not very full.
An inode is allocated to a file so, if you have gazillions of files, all 1 byte each, you'll run out of inodes long before you run out of disk.
It's also possible that deleting files will not reduce the inode count if the files have mul...
When to use Task.Delay, when to use Thread.Sleep?
...ch. If you're using a thread pool this could also cause a new thread to be allocated. Both operations are quite heavy whereas the cooperative multi-tasking provided by Task.Delay etc is designed to avoid all of that overhead, maximize throughput, allow cancellation, and provide cleaner code.
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Using scanf() in C++ programs is faster than using cin?
... at runtime, it usually has an advantage of not requiring excessive memory allocations (this depends on your compiler and runtime). That said, unless performance is your only end goal and you are in the critical path then you should really favour the safer (slower) methods.
There is a very deliciou...
How to prevent http file caching in Apache httpd (MAMP)
...g of javascript files, which is done on your browser, you can use a random token at the end of the js url, something like ?rd=45642111, so the url looks like:
<script type="texte/javascript" src="my/url/myjs.js?rd=4221159546">
If this url on the page is generated by a PHP file you can simpl...
