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Specifying and saving a figure with exact size in pixels
...-- it seems that the DPI saved is always 0.02 pixels/inch smaller than the selected value, which will have a (small) effect on large image sizes. Some more discussion of this here.
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Why is char[] preferred over String for passwords?
...method. Similarly, I have come across a suggestion not to use String to handle passwords.
17 Answers
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Dispelling the UIImage imageNamed: FUD
...Feb 2014: Note that this question dates from iOS 2.0! Image requirements and handling have moved on a lot since then. Retina makes images bigger and loading them slightly more complex. With the built in support for iPad and retina images, you should certainly use ImageNamed in your code .
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
... is that my genius project manager thinks that boost is another dependency and that it is horrible because "you depend on it"(I tried explaining the quality of boost, then gave up after some time :( ). Smaller reason why I would like to do it is that I would like to learn c++11 features, because peo...
Does Python support multithreading? Can it speed up execution time?
...ross multiple cores. This extends to I/O controlled by the kernel, such as select() calls for socket reads and writes, making Python handle network events reasonably efficiently in a multi-threaded multi-core setup.
What many server deployments then do, is run more than one Python process, to let t...
How to send email from Terminal?
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Go into Terminal and type man mail for help.
You will need to set SMTP up:
http://hints.macworld.com/article.php?story=20081217161612647
See also:
http://www.mactricksandtips.com/2008/09/send-mail-over-your-network.html
Eg:
mail -s "hello" "e...
How to use find command to find all files with extensions from list?
...gif|png|jpeg)" > log
The -E saves you from having to escape the parens and pipes in your regex.
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What exactly does stringstream do?
I am trying to learn C++ since yesterday and I am using this document: http://www.cplusplus.com/files/tutorial.pdf (page 32) . I found a code in the document and I ran it. I tried inputting Rs 5.5 for price and an integer for quantity and the output was 0.
I tried inputting 5.5 and 6 and the output...
Linux delete file with size 0 [duplicate]
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This will delete all the files in a directory (and below) that are size zero.
find /tmp -size 0 -print -delete
If you just want a particular file;
if [ ! -s /tmp/foo ] ; then
rm /tmp/foo
fi
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How can I do DNS lookups in Python, including referring to /etc/hosts?
...for the late comment: the result may be cached by the local resolver. nscd and nslcd on Unix boxes can do this. It could also be cached by a local name server configured for caching (a common setup, once upon a time. Probably not so much now). It's not a straightforward ‘no’ answer, unfortunatel...