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Find duplicate lines in a file and count how many time each line was duplicated?
...er of lines). I'm working on files that are several gigabytes large, so performance is a key issue. I wonder whether there is a tool that does just the counting in a single pass using a prefix tree (in my case strings often have common prefixes) or similar, that should do the trick in O(n) * avg_lin...
What is the !! (not not) operator in JavaScript?
I saw some code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !! . Can someone please tell me what this operator does?
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Request Monitoring in Chrome
...veloper tools click on the Network button. If it isn't already, enable it for the session or always.
Click the "XHR" sub-button.
Initiate an AJAX call.
You will see items begin to show up in the left column under "Resources".
Click the resource and there are 2 tabs showing the headers and retur...
How to implement classic sorting algorithms in modern C++?
...d() as well as with std::next() are only available as of C++11 and beyond. For C++98, one needs to write these himself. There are substitutes from Boost.Range in boost::begin() / boost::end(), and from Boost.Utility in boost::next().
the std::is_sorted algorithm is only available for C++11 and beyo...
is there a post render callback for Angular JS directive?
...vascript execution and allowing the browser to render the content first, before continuing the execution of that Javascript.
– parliament
Dec 25 '14 at 17:48
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Detect if an input has text in it using CSS — on a page I am visiting and do not control?
... cannot do this because CSS cannot do this. CSS has no (pseudo) selectors for <input> value(s). See:
The W3C selector spec
The Mozilla/Firefox supported selectors
Cross-browser, CSS3 support table
The :empty selector refers only to child nodes, not input values.
[value=""] does work; but ...
How can I insert values into a table, using a subquery with more than one result?
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Is there an easy way to strike through text in an app widget?
... First it is unclear what is remoteviews , plus doesn't work for all android versions.
– akshat tailang
Nov 28 '18 at 18:26
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Extracting hours from a DateTime (SQL Server 2005)
... expect (try y). Feel free to maintain your own code however you like, but for teaching, I am opposed to promoting lazy shorthand that leads to confusion or worse. See #6 here blogs.sqlsentry.com/aaronbertrand/… and sqlblog.com/blogs/aaron_bertrand/archive/2011/09/20/…
– Aa...
log4net argument to LogManager.GetLogger
Why do most log4net examples get the logger for a class by doing this:
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