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Random number generator only generating one random number
...need to write ''two'' lines of code to generate a random number instead of one. Is this really worth it to save reading one simple line of code?
– EMP
Apr 15 '10 at 23:07
5
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What and where are the stack and heap?
...f the stack; freeing a block from the stack is nothing more than adjusting one pointer.
The heap is memory set aside for dynamic allocation. Unlike the stack, there's no enforced pattern to the allocation and deallocation of blocks from the heap; you can allocate a block at any time and free it at...
Regex Pattern to Match, Excluding when… / Except between
...ontexts is a special challenge.
Surprise
Surprisingly, there is at least one efficient solution that is general, easy to implement and a pleasure to maintain. It works with all regex flavors that allow you to inspect capture groups in your code. And it happens to answer a number of common question...
MySQL Multiple Joins in one query?
...hich will return all your dashboard messages and an image_filename only if one exists (otherwise you'll get a null)
SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_messa...
Vim search and replace selected text
...ith n.
This command will override your register h so you can choose other one (by changing h in the command above to another lower case letter) that you don't use.
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Xcode warning: “Multiple build commands for output file”
...
I wanted to add one thing to this. If you end up with a ton of duplicate references somehow (like I did), you can simply click "Validate Settings" and it will automatically delete duplicate references. Much easier than manually seeking them ...
Sending HTML email using Python
...'s address, recipient's address
# and message to send - here it is sent as one string.
s.sendmail(me, you, msg.as_string())
s.quit()
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How are echo and print different in PHP? [duplicate]
...a difference between the two, but speed-wise it
should be irrelevant which one you use. echo is marginally faster
since it doesn't set a return value if you really want to get down to the
nitty gritty.
Expression. print() behaves like a function in that you can do:
$ret = print "Hello World"; A...
How to remove old Docker containers
...orks, images (both dangling and unreferenced), and optionally, volumes, in one command.
For older Docker versions, you can string Docker commands together with other Unix commands to get what you need. Here is an example on how to clean up old containers that are weeks old:
$ docker ps --filter ...
Should one call .close() on HttpServletResponse.getOutputStream()/.getWriter()?
In Java Servlets, one can access the response body via response.getOutputStream() or response.getWriter() . Should one call .close() on this OutputStream after it has been written to?
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