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More elegant way of declaring multiple variables at the same time
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As others have suggested, it's unlikely that using 10 different local variables with Boolean values is the best way to write your routine (especially if they really have one-letter names :)
Depending on what you're doing, it may make sense to use a dictionary...
Compare two MySQL databases [closed]
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If you're working with small databases I've found running mysqldump on both databases with the --skip-comments and --skip-extended-insert options to generate SQL scripts, then running diff on the SQL scripts works pretty well.
By skippin...
How do I install the OpenSSL libraries on Ubuntu?
...build some code on Ubuntu 10.04 LTS that uses OpenSSL 1.0.0. When I run make, it invokes g++ with the "-lssl" option. The source includes:
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JavaScript seconds to time string with format hh:mm:ss
...conds;}
return hours+':'+minutes+':'+seconds;
}
You can use it now like:
alert("5678".toHHMMSS());
Working snippet:
String.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(sec_num / 3600);
var ...
Breakpoint on property change
Firebug for Firefox has a nice feature, called "Break on property change", where I can mark any property of any object, and it will stop JavaScript execution right before the change.
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What's the difference between == and .equals in Scala?
... edited Sep 18 '13 at 12:45
Erik Kaplun
31.6k1111 gold badges8888 silver badges9696 bronze badges
answered Oct 6 '11 at 22:33
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There is already an open DataReader associated with this Command which must be closed first
...May 19 '11 at 20:21
Ladislav MrnkaLadislav Mrnka
345k5656 gold badges638638 silver badges653653 bronze badges
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Travel/Hotel API's? [closed]
I am working on a large project involving creating a worldwide hotel database with rich data such as Addresses, Images, Descriptions, Policies, Coordinates, Facilities, Reviews, Local area descriptions and their amenities etc.
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How to get a list of current open windows/process with Java?
Does any one know how do I get the current open windows or process of a local machine using Java?
14 Answers
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Can someone explain the dollar sign in Javascript?
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A '$' in a variable means nothing special to the interpreter, much like an underscore.
From what I've seen, many people using jQuery (which is what your example code looks like to me) tend to prefix variables that contain a jQuery object with a $ so that they are easily identified and not mix...