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How to create and handle composite primary key in JPA
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@FastEngy It can still be accessed via Wayback Machine: web.archive.org/web/20170123035517/http://uaihebert.com/…. It seems that this article is superseded by web.archive.org/web/20170202203555/http://uaihebert.com/… and web.archive.org/web/20161014051056/http://uaihebert.com/...
How to handle floats and decimal separators with html5 input type number
... has a default value of 1. If you want the input's validation algorithm to allow floating-point values, specify a step accordingly.
For example, I wanted dollar amounts, so I specified a step like this:
<input type="number" name="price"
pattern="[0-9]+([\.,][0-9]+)?" step="0.01"
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Differences between Perl and PHP [closed]
...ype, of which Perl has three, and the type specifier is part of the name (called a "sigil"), so $foo is a different variable than @foo or %foo.
(related to the previous point) Perl has separate symbol table entries for scalars, arrays, hashes, code, file/directory handles and formats. Each has its o...
What's Pros and Cons: putting javascript in head and putting just before the body close
...p Your Web Site:
The problem caused by scripts is that
they block parallel downloads. The
HTTP/1.1 specification suggests that
browsers download no more than two
components in parallel per hostname.
If you serve your images from multiple
hostnames, you can get more than two
downloa...
What is the difference between `throw new Error` and `throw someObject`?
...t what we can extract from it in an event of an error? The Error object in all browsers support the following two properties:
name: The name of the error, or more specifically, the name of the constructor function the error belongs to.
message: A description of the error, with this description var...
Can a program depend on a library during compilation but not runtime?
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A compile-time dependency is generally required at runtime. In maven, a compile scoped dependency will be added to the classpath on runtime (e.g. in wars they will be copied to WEB-INF/lib).
It is not, however, strictly required; for instance, we may compile...
How accurately should I store latitude and longitude?
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Actually, equator is best case. One latitude and one longitude degree are the same size at the equator (69 miles), but one degree of longitude shrinks to zero as it approaches either of the poles. Here's a very nice explanation: ...
ASP.NET MVC framework 4.5 CSS bundle does not work on the hosting
...NET to run .js and .css requests through the BundleModule.
<modules runAllManagedModulesForAllRequests="true">
<remove name="BundleModule" />
<add name="BundleModule" type="System.Web.Optimization.BundleModule" />
</modules>
Big shout out to Ray Moro who figured out th...
What is a pre-revprop-change hook in SVN, and how do I create it?
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Basically it's a script that is launched before unversioned property is modified on the repository, so that you can manage more precisely what's happening on your repository.
There are templates in the SVN distrib for different h...
Event listener for when element becomes visible?
... User Interaction, if your code is organised enough you should be able to call the initialising function in the same place where the visibility changes (i.e. you shouldn't change myElement.style.display on many places, instead, call a function/method that does this and anything else you might want)....