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Which terminal command to get just IP address and nothing else?
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On Debian I got just one ip. So using hostname isn't portable.
– Timofey Stolbov
Dec 16 '11 at 3:00
1
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RegEx for matching UK Postcodes
...[ABD-HJLNP-UW-Z]{2}))$
This makes spaces optional, but does limit you to one space (replace the '&' with '{0,} for unlimited spaces). It assumes all text must be upper-case.
If you want to allow lower case, with any number of spaces, use:
^(([gG][iI][rR] {0,}0[aA]{2})|((([a-pr-uwyzA-PR-UWYZ]...
What's the difference between HEAD^ and HEAD~ in Git?
... nonlinear: a directed acyclic graph (DAG) or tree. For a commit with only one parent, rev~ and rev^ mean the same thing. The caret selector becomes useful with merge commits because each one is the child of two or more parents — and strains language borrowed from biology.
HEAD^ means the first im...
Does Python optimize tail recursion?
... +1 For being the correct answer but this seems like an incredibly bone-headed design decision. The reasons given seem to boil down to "it's hard to do given how python is interpreted and I don't like it anyway so there!"
– Basic
Sep 4 '14 at 18:36
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What is the difference between the Facade and Adapter Pattern?
I've been reading both definitions and they seem quite the same. Could anyone point out what are their differences?
16 Answ...
Padding characters in printf
...tring2} )) "$pad"
printf '%s\n' "$string2"
string2=${string2:1}
done
Unfortunately, in that technique, the length of the pad string has to be hardcoded to be longer than the longest one you think you'll need, but the padlength can be a variable as shown. However, you can replace the firs...
How to reference the initial commit?
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There is additional problem with your question: there can exist more than one such TAIL root commit (parentless commit) in a repository (even if we discount disconnected branches, such as 'html', 'man' and 'todo' in git.git repository). This is usually result of joining separate projects in one, or...
Best way to handle list.index(might-not-exist) in python?
...n I'm not sure, and I am looking for something equivalent here. Returning None instead of -1 would be fine, but as you commented yourself, str.find() returns -1 so why shouldn't there be list.find() that does the same thing? I'm not buying the "pythonic" argument
– Draemon
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Determine if map contains a value for a key?
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Alan I have to agree with @dynamic on this one, having to define an iterator and then compare it with end is not a natural way of saying that something does not exist. It seems far more straightforward to me to say that a certain element appears at least once in this ...
Best practices for SQL varchar column length [closed]
...L table or add a new varchar column to an existing table, I am wondering one thing: what is the best value for the length .
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