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How to change the session timeout in PHP?
...gc_probability=0 by default in the configuration, and is instead done via /etc/cron.d/php, which runs at XX:09 and XX:39 (that is, every half hour). This cron job looks for sessions older than the session.gc_maxlifetime specified in the configuration, and if any are found, they are deleted. As a con...
How can I build a small operating system on an old desktop computer? [closed]
...iles and devices, reading and writing, passing messages between processes, etc.
Read up on x86 assembly (assuming you are designing this for an x86 machine). That should answer a lot of your questions with regards to moving between processor operating modes.
If you've got any electronics knowledg...
Why shouldn't I use “Hungarian Notation”?
... be much safer to create distinct types (eg. structs) for lengths, weights etc. and use operator overloading to ensure that only valid operations are possible.
– JacquesB
Jul 3 '14 at 13:55
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Get a CSS value with JavaScript
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You can use getComputedStyle().
var element = document.getElementById('image_1'),
style = window.getComputedStyle(element),
top = style.getPropertyValue('top');
jsFiddle.
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Understanding Spliterator, Collector and Stream in Java 8
...to work on one part of the collection, one thread to work on another part, etc.
You should essentially never be saving values of type Stream to a variable, either. Stream is sort of like an Iterator, in that it's a one-time-use object that you'll almost always use in a fluent chain, as in the Java...
In vim, how do I get a file to open at the same line number I closed it at last time?
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From Ubuntu's /etc/vim/vimrc file, this example is commented out:
" Uncomment the following to have Vim jump to the last position when
" reopening a file
if has("autocmd")
au BufRead...
How to check if a symlink exists
... just test to see if it exists regardless of type (file, directory, socket etc) then use -e
So if file is really file and not just a symbolic link you can do all these tests and
get an exit status whose value indicates the error condition.
if [ ! \( -e "${file}" \) ]
then
echo "%ERROR: file $...
What's “requestCode” used for on PendingIntent?
...sed to retrieve the same pending intent instance later on (for cancelling, etc).
Yes, my guess is the alarms will override each other. I would keep the request codes unique.
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How dangerous is it to access an array out of bounds?
...isk), possibly bringing down the entire system. A lot of malware (viruses, etc.) exploits buffer overruns to gain unauthorized access to the system.
(One historical example: I've heard that on some old systems with core memory, repeatedly accessing a single memory location in a tight loop could li...
How to read integer value from the standard input in Java
... num = in.nextInt();
It can also tokenize input with regular expression, etc. The API has examples and there are many others in this site (e.g. How do I keep a scanner from throwing exceptions when the wrong type is entered?).
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