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How are software license keys generated?
License keys are the defacto-standard as an anti-piracy measure. To be honest, this strikes me as (in)Security Through Obscurity , although I really have no idea how license keys are generated. What is a good (secure) example of license key generation? What cryptographic primitive (if any) are they...
Error: free(): invalid next size (fast):
...rror I'm getting? I'm compiling C++ using g++ on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 times in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the time.
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Fastest way to implode an associative array with keys
...function. So, if it's not for a URL, is this really faster than array_walk and what if you don't want it encoded?
– e-motiv
Jan 31 '14 at 23:12
10
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How to round float numbers in javascript?
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Convert a number to a string and then back again? That can't be fast.
– csl
Nov 9 '12 at 14:07
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Facebook Callback appends '#_=_' to Return URL
...rect_uri when
this field is left blank. Please ensure that your app can handle this
behavior.
To prevent this, set the redirect_uri in your login url request like so: (using Facebook php-sdk)
$facebook->getLoginUrl(array('redirect_uri' => $_SERVER['SCRIPT_URI'],'scope' => 'user_about...
RegEx: Smallest possible match or nongreedy match
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I don't know, if I'm the only one with this misunderstanding, but it's important to note: While it's true that the non-greedy operator will match as few characters as possible, it still might not be the match one is looking for. "As few characters as possible" does not equal "sh...
How to determine if a process runs inside lxc/Docker?
...k /proc/1/cgroup. It will tell you the control groups of the init process, and when you are not in a container, that will be / for all hierarchies. When you are inside a container, you will see the name of the anchor point. With LXC/Docker containers, it will be something like /lxc/<containerid&g...
What's the opposite of head? I want all but the first N lines of a file
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@Nicholas: Weird, I figured it would be standard documentation regardless of the OS. I pulled that from Cygwin inside Windows, so I don't know what it looks like in various Linux distros. Glad it worked.
– Joe Enos
Aug 18 '10 ...
linq where list contains any in list
...ains method for these kind of queries. I was curious by seeing your answer and checked the internal implementation and found that Intersect uses Set. Can you tell me the performance difference between those two methods?
– rebornx
Feb 17 '17 at 9:02
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Can you 'exit' a loop in PHP?
... @Gabriel: I am posting code directly referenced in the PHP manual, and it accurately shows the usage of the break statement.
– TheTXI
Feb 26 '09 at 2:52
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