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How can I remove the first line of a text file using bash/sed script?
... lines. tail -n 5 would give you the last 5 lines of the input. The + sign kind of inverts the argument and make tail print anything but the first x-1 lines. tail -n +1 would print the whole file, tail -n +2 everything but the first line, etc.
GNU tail is much faster than sed. tail is also availabl...
How does the Comma Operator work
How does the comma operator work in C++?
9 Answers
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How to check that a string is a palindrome using regular expressions?
...equires at least x nodes because, after seeing the 'b' we have to count back x times to make sure it is a palindrome.
Finally, getting back to the original question, you could tell the interviewer that you can write a regular expression that accepts all palindromes that are smaller than some finite...
How to cache data in a MVC application
... caching and partial page caching in a MVC application. However, I would like to know how you would cache data.
14 Answers
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Lambda capture as const reference?
... capture-by-reference and doesn't mention any sort of const-ness.
Feels like an oversight to me, but I haven't followed the standardization process very closely.
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How do I specify the Linq OrderBy argument dynamically?
How do I specify the argument passed to orderby using a value I take as a parameter?
11 Answers
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How to convert a byte array to a hex string in Java?
...& 0x0F];
}
return new String(hexChars);
}
My own tiny benchmarks (a million bytes a thousand times, 256 bytes 10 million times) showed it to be much faster than any other alternative, about half the time on long arrays. Compared to the answer I took it from, switching to bitwise ops --...
How to make “if not true condition”?
I would like to have the echo command executed when cat /etc/passwd | grep "sysa" is not true.
6 Answers
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How to link to specific line number on github
I know I can link to a specific line number on a file on a github repo (I'm sure I've seen this before)...
7 Answers
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Proper way to exit iPhone application?
...y, [[NSThread mainThread] exit], although I have not tried that it seems like the more appropriate solution.
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