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What does iterator->second mean?
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I'm sure you know that a std::vector<X> stores a whole bunch of X objects, right? But if you have a std::map<X, Y>, what it actually stores is a whole bunch of std::pair<const X, Y>s. That's exactly what a map is - it pai...
Why doesn't Java offer operator overloading?
...sult not-equal. In Java, operator= performs reference copy, so a and b are now referring to the same value. As a result, the comparison will produce 'equal', since the object will compare equal to itself.
The difference between copies and references only adds to the confusion of operator overloadin...
Want to find records with no associated records in Rails
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This is really good! Thanks! Now if the rails gods could perhaps implement it as a simple Person.where(contacts: nil) or Person.with(contact: contact) if using where encroaches too far into 'properness' - but given that contact: is already being parsed a...
Android List View Drag and Drop sort
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I have been working on this for some time now. Tough to get right, and I don't claim I do, but I'm happy with it so far. My code and several demos can be found at
https://github.com/bauerca/drag-sort-listview
Its use is very similar to the TouchInterceptor (on wh...
What's the best free C++ profiler for Windows? [closed]
... and I use PIX for Xbox 360 and found it very good, but it's not free. I know the Intel VTune , but it's not free either.
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How to saveHTML of DOMDocument without HTML wrapper?
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All of these answers are now wrong, because as of PHP 5.4 and Libxml 2.6 loadHTML now has a $option parameter which instructs Libxml about how it should parse the content.
Therefore, if we load the HTML with these options
$html->loadHTML($conte...
Example JavaScript code to parse CSV data
...and if it matches
// field delimiter. If id does not, then we know
// that this delimiter is a row delimiter.
if (
strMatchedDelimiter.length &&
strMatchedDelimiter !== strDelimiter
){
// Sin...
MySQL: Large VARCHAR vs. TEXT?
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@MichaelJ.Calkins Thing that happened in MySQL 5.6. Now you also have fulltext search in InnoDB. See dev.mysql.com/doc/refman/5.6/en/fulltext-search.html
– PhoneixS
Jun 5 '15 at 8:17
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Should I put the Google Analytics JS in the or at the end of ?
...update to this: rather than at the end of <head>, the page linked-to now says "Add the tag right after the opening <head> tag on each page."
– Brandon
Aug 2 '19 at 15:47
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Case objects vs Enumerations in Scala
...ons are a bit clumsy in Scala and have the feel of an awkward add-on, so I now tend to use case objects. A case object is more flexible than an enum:
sealed trait Currency { def name: String }
case object EUR extends Currency { val name = "EUR" } //etc.
case class UnknownCurrency(name: String) exte...