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SQL Joins Vs SQL Subqueries (Performance)?
...t query to be quicker, mainly because you have an equivalence and an explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (WHERE x=Y OR x=Z OR...).
As with ALL THINGS SQL though, your mileage may vary. The spee...
How to prevent form resubmission when page is refreshed (F5 / CTRL+R)
I have a simple form that submits text to my SQL table. The problem is that after the user submits the text, they can refresh the page and the data gets submitted again without filling the form again. I could redirect the user to another page after the text is submitted, but I want users to stay on ...
C/C++ Struct vs Class
After finishing my C++ class it seemed to me the structs/classes are virtually identical except with a few minor differences.
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Smart way to truncate long strings
... anyone have a more sophisticated solution/library for truncating strings with JavaScript and putting an ellipsis on the end, than the obvious one:
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Is there a portable way to get the current username in Python?
... in Python (i.e., one that works under both Linux and Windows, at least). It would work like os.getuid :
12 Answers
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Scatterplot with marginal histograms in ggplot2
Is there a way of creating scatterplots with marginal histograms just like in the sample below in ggplot2 ? In Matlab it is the scatterhist() function and there exist equivalents for R as well. However, I haven't seen it for ggplot2.
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jQuery - Trigger event when an element is removed from the DOM
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Just checked, it is already built-in in current version of JQuery:
jQuery - v1.9.1
jQuery UI - v1.10.2
$("#myDiv").on("remove", function () {
alert("Element was removed");
})
Important: This is functionality of Jquery UI script (n...
Is “Java Concurrency In Practice” still valid? [closed]
...as, concepts and implementation described in the book are still compliant with the latest Java versions.
9 Answers
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Remote JMX connection
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Had it been on Linux the problem would be that localhost is the loopback interface, you need to application to bind to your network interface.
You can use the netstat to confirm that it is not bound to the expected network inte...
How to construct a REST API that takes an array of id's for the resources
...d Dec 27 '10 at 20:04
Florin DumitrescuFlorin Dumitrescu
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