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When should you use 'friend' in C++?

...te, the C++ FAQ mentions that friend enhances encapsulation. friend grants selective access to members, just like protected does. Any fine-grained control is better than granting public access. Other languages define selective access mechanisms too, consider C#'s internal. Most negative criticism ar...
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How can I pretty-print JSON in a shell script?

...v console, Network tab, export all as HAR file, "cat site.har | underscore select '.url' --outfmt text | grep mydomain"; now I have a chronologically ordered list of all URL fetches made during the loading of my company's site. Pretty printing is easy: underscore -i data.json print Same thing: ...
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Truncating long strings with CSS: feasible yet?

...ion. It does come with the downside however of not allowing the text to be selected in Firefox. Check out his guest post on Matt Snider's blog for the full details on how this works. Note this technique also prevents updating the content of the node in JavaScript using the innerHTML property in Fir...
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Difference between binary semaphore and mutex

...perspective, mutex are more like state-pattern where the algorithm that is selected by the state can change the state. The binary-semaphore are more like strategy pattern where the external algorithm can change the state and eventually the algorithm/strategy selected to run. – ...
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Paused in debugger in chrome?

...caught exceptions" is active. In your case, if you don't want to pause, select Don't pause on exceptions. To select, toggle the pause button till it become grey. share | improve this answer ...
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How to connect to SQL Server database from JavaScript in the browser?

...onnectionstring); var rs = new ActiveXObject("ADODB.Recordset"); rs.Open("SELECT * FROM table", connection); rs.MoveFirst while(!rs.eof) { document.write(rs.fields(1)); rs.movenext; } rs.close; connection.close; A better way to connect to a sql server would be to use some server side lang...
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How to change the style of the title attribute inside an anchor tag?

...n, requiring only the css attr expression, generated content and attribute selectors (which suggests that it works as far back as IE8): a[title]:hover:after { content: attr(title); position: absolute; } Source: https://jsfiddle.net/z42r2vv0/2/ update w/ input from @ViROscar: please note tha...
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How to repeat last command in python interpreter shell?

... In IDLE, go to Options -> Configure IDLE -> Keys and there select history-next and then history-previous to change the keys. Then click on Get New Keys for Selection and you are ready to choose whatever key combination you want. ...
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Why does this async action hang?

...DBConnection.ExecuteAsync<ResultClass>( ds => ds.Execute("select slow running data into result")); } What's the difference? There's now no awaiting anywhere, so nothing being implicitly scheduled to the UI thread. For simple methods like these that have a single return, there's no...
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Quicksort vs heapsort

... For any deterministic, constant time pivot selection strategy, you can find an array that produces the O(n^2) worst case. It's not enough to eliminate just the minimum. You have to reliably chose pivots that are within a certain pecrentile band. –...