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On design patterns: When should I use the singleton?
...wing way in Root Cause of Singletons, "The information here flows one way: From your application into the logger. Even though loggers are global state, since no information flows from loggers into your application, loggers are acceptable."
I'm sure there are other valid reasons as well. Alex Miller...
Correct owner/group/permissions for Apache 2 site files/folders under Mac OS X?
...e marches on, and OS X likes to change how its default Apache server works from time to time. So while this solution still works, I would at this point strongly recommend the alternate solution of creating local VMs to test your apps on instead of using OS X itself. See: vagrantup.com
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jQuery AJAX submit form
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You can use the ajaxForm/ajaxSubmit functions from Ajax Form Plugin or the jQuery serialize function.
AjaxForm:
$("#theForm").ajaxForm({url: 'server.php', type: 'post'})
or
$("#theForm").ajaxSubmit({url: 'server.php', type: 'post'})
ajaxForm will send when the sub...
Convert String to double in Java
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@TinyBelly: you need to extract the part of the text from the string that you want to parse for the double. Here's one way you could do it for your case, though I can't guarantee it will work for everything: double total = Double.parseDouble(jlbTotal.getText().replaceAll("[^0-9...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...a' in window)); // displays "false"
delete completely removes a property from an object. You can't do that with properties added to window indirectly via var, the delete is either silently ignored or throws an exception (depending on the JavaScript implementation and whether you're in strict mode)...
How to store a dataframe using Pandas
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@user1700890 try to generate from random data (text and arrays) and post a new question. I don't think this can be right/suspect we're missing something. New question will get more eyes, but try to include/generate a DataFrame that reproduces :)
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A good book for learning D3.js [closed]
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As @Autio already mentioned, there are the tutorials from Scott Murray on his website.
You will also note that on his site, he has a link to his recent d3 book,
Interactive Data Visualization for the Web.
However, that book is now available online for free, along with embed...
Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
... for a full list: http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx).
From a more specific standpoint, lazy loading comes in to play with choosing the type. By default, navigation properties in Entity Framework come with change tracking and are proxies. In order for the dynamic proxy to be crea...
StringUtils.isBlank() vs String.isEmpty()
...ull). This is totally different than just checking if the string is empty.
From the linked documentation:
Checks if a String is whitespace, empty ("") or null.
StringUtils.isBlank(null) = true
StringUtils.isBlank("") = true
StringUtils.isBlank(" ") = true
StringU...
Objective-C ARC: strong vs retain and weak vs assign
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From the Transitioning to ARC Release Notes (the example in the section on property attributes).
// The following declaration is a synonym for: @property(retain) MyClass *myObject;
@property(strong) MyClass *myObject;
So ...