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What is an OS kernel ? How does it differ from an operating system? [closed]

...ialized processes running on top of them. In that case the kernel itself becomes the OS itself. I think you can draw the line at what the majority of the applications running on top of that OS do require. If most of them require only kernel, the kernel is the OS, if most of them require X Window Sy...
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AES Encryption for an NSString on the iPhone

...post you link to does seem to work pretty decently... aside from the extra comma in each call to CCCrypt() which caused compile errors. A later comment on that post includes this adapted code, which works for me, and seems a bit more straightforward. If you include their code for the NSData categor...
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How to programmatically determine the current checked out Git branch [duplicate]

... The correct solution is to take a peek at contrib/completions/git-completion.bash does that for bash prompt in __git_ps1. Removing all extras like selecting how to describe detached HEAD situation, i.e. when we are on unnamed branch, it is: branch_name="$(git symbolic-ref ...
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How can I combine flexbox and vertical scroll in a full-height app?

... sized will be distributed evenly to the items with flex: auto. http://www.w3.org/TR/2012/CR-css3-flexbox-20120918/#flex-common It sounds to me like if you say an element is 100px tall, it is treated more like a "suggested" size, not an absolute. Because it is allowed to shrink and grow, it ta...
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UIButton custom font vertical alignment

...he font turned out to be the fact that its ascender property was too small compared to the value of system fonts. Ascender is a vertical whitespace above font's characters. To fix your font you will have to download Apple Font Tool Suite command line utilities. Then take your font and do the followi...
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bash assign default value

... Please look at http://www.tldp.org/LDP/abs/html/parameter-substitution.html for examples ${parameter-default}, ${parameter:-default} If parameter not set, use default. After the call, parameter is still not set. Both forms are almost equivalent...
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How do you remove the root CA certificate that fiddler installs

...g network testing), and you only want to remove it on one (source - http://www.cantoni.org/2013/11/06/capture-android-web-traffic-fiddler): Go to the Security tab in settings Tap Trusted credentials, then select the User tab Tap on the Fiddler “Do not trust” certificate, then scroll down to r...
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Learning Python from Ruby; Differences and Similarities

...l read and write access to variables from the outer scope. Python has list comprehensions, which are pretty expressive. For example, if you have a list of numbers, you can write [x*x for x in values if x > 15] to get a new list of the squares of all values greater than 15. In Ruby, you'd hav...
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Get size of all tables in database

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Check if multiple strings exist in another string

...[] around your argument to any(). any([x in str for x in a]) so that the comprehension returns an iterable. But maybe later versions of Python already do this. – emispowder Mar 27 '13 at 1:06 ...