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How to use regex with find command?
...-regex find expression matches the whole name, including the relative path from the current directory. For find . this always starts with ./, then any directories.
Also, these are emacs regular expressions, which have other escaping rules than the usual egrep regular expressions.
If these are all ...
How to delete a folder with files using Java
...elf. Symlinks are just an example of things you'll miss writing everything from scratch.
– 9ilsdx 9rvj 0lo
Mar 22 '18 at 7:31
2
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What exactly is Arel in Rails 3.0?
... but one that doesn't make sense, or that does something totally different from what you think it does. This can never happen with ARel. (This is what the article I link to below means with "closed under composition".)
will objects/queries be "easier" to create?
Yes. For example, as I mentioned ab...
The key must be an application-specific resource id
...atic final int TAG_ONLINE_ID = 1 + 2 << 24;
should work. More info from ceph3us:
The specified key should be an id declared in the resources of the
application to ensure it is unique Keys identified as belonging to the
Android framework or not associated with any package will cause a...
Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
...ry&.name
NoMethodError: undefined method `name' for "Australia":String
from (pry):38:in `<main>'
> params.try(:country).try(:name)
nil
It is also including a similar sort of way: Array#dig and Hash#dig. So now this
city = params.fetch(:[], :country).try(:[], :state).try(:[], :city)
...
Mercurial error: abort no username supplied
...
I posted this q/a to hopefully help someone in the future from having to waste time with this nugget.
– Kevin Won
Feb 25 '10 at 4:20
4
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How to change the docker image installation directory?
From what I can tell, docker images are installed to /var/lib/docker as they are pulled. Is there a way to change this location, such as to a mounted volume like /mnt ?
...
PHP - include a php file and also send query parameters
I have to show a page from my php script based on certain conditions. I have an if condition and am doing an "include" if the condition is satisfied.
...
Why do we use Base64?
...e email might, with a delivery agent replacing the string of characters "\nFrom " with "\n>From " when it saves the message to a mailbox. Or HTTP headers are newline terminated with no reversible way to escape newlines in the data (line continuation conflates whitespace), so you can't just dump a...
How do I auto size a UIScrollView to fit its content
...
Actually, we cannot start unioning from CGRect.zero, it works only if you home some subviews in negative coordinates. You should start union subview frames from the first subview, not from zero. For instance, you have just one subview which is an UIView with ...