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Fast way of finding lines in one file that are not in another?
...y line content ss1[]. Then as file2 is read, each matching line is deleted from ll1[] and ss1[]. At the end the remaining lines from file1 are output, preserving the original order.
In this case, with the problem as stated, you can also divide and conquer using GNU split (filtering is a GNU extensi...
How can I use xargs to copy files that have spaces and quotes in their names?
... get case-sensitive results.
Note: The -- flag passed to cp prevents it from processing files starting with - as options.
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Remove ActiveRecord in Rails 3
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I'm going by this from reading the source, so let me know if it actually worked. :)
The rails command that generates the application template now has an option -O, which tells it to skip ActiveRecord.
If you don't feel like rerunning rails, ...
Why is this program erroneously rejected by three C++ compilers?
...ce the error. It is entirely possible that your compiler support a mapping from image to basic source character set, but is not required to.
Since this mapping is implementation-defined, you'll need to look at your implementations documentation to see the file formats it supports. Typically, every...
node.js, socket.io with SSL
...should not be needed if you specify 'https' in the url. Here is an excerpt from socket.io client source secure: 'https' == uri.protocol (version 0.9.16), it sets secure option to true if https is detected in the url.
– XiaoChuan Yu
Jul 28 '13 at 22:08
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How do I create a constant in Python?
...alent to Java's final. However, it does not actually prevent reassignment:
from typing import Final
a: Final = 1
# Executes fine, but mypy will report an error if you run mypy on this:
a = 2
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What is the correct syntax of ng-include?
...oting, it is important to know that ng-include requires the url path to be from the app root directory and not from the same directory where the partial.html lives. (whereas partial.html is the view file that the inline ng-include markup tag can be found).
For example:
Correct:
div ng-includ...
Split Java String by New Line
...ex (regular expressions). Since Java 8 regex supports \R which represents (from documentation of Pattern class):
Linebreak matcher
\R Any Unicode linebreak sequence, is equivalent to
\u000D\u000A|[\u000A\u000B\u000C\u000D\u0085\u2028\u2029]
So we can use it to mat...
Different between parseInt() and valueOf() in java?
How is parseInt() different from valueOf() ?
11 Answers
11
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sed or awk: delete n lines following a pattern
... A clever (albeit GNU-Sed-specific) solution, but few people will benefit from it, unless you add an explanation. pattern_number.txt is a 2-column file containing the pattern to match in the 1st column, and in the 2nd the number of lines to skip. The first sed command transforms the file into a se...