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Git submodule head 'reference is not a tree' error
...that is pointing to an invalid commit: the submodule commit remained local and when I try to fetch it from another repo I get:
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What's the best way to build a string of delimited items in Java?
...,char)
Java 8:
Java 8 provides joining out of the box via StringJoiner and String.join(). The snippets below show how you can use them:
StringJoiner
StringJoiner joiner = new StringJoiner(",");
joiner.add("01").add("02").add("03");
String joinedString = joiner.toString(); // "01,02,03"
Str...
What's the difference between @Secured and @PreAuthorize in spring security 3?
...can work with Spring Expression Language (SpEL). You can:
Access methods and properties of SecurityExpressionRoot.
Access method arguments (requires compilation with debug info or custom ParameterNameDiscoverer):
@PreAuthorize("#contact.name == principal.name")
public void doSomething(Contact con...
Listing only directories in UNIX
... doesn't have such option).
Also, can this be done with a single line command?
20 Answers
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In C#, What is a monad?
... the concept. The reason is that monads are a functional language concept, and thus the examples are in languages I haven't worked with (since I haven't used a functional language in depth). I can't grasp the syntax deeply enough to follow the articles fully ... but I can tell there's something wort...
Disable, but not uninstall Resharper 4.x onwards
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You can disable ReSharper 4 and lower using the Visual Studio Add-In Manager (remove the check from check box on the left).
In ReSharper 5 and above (tested up to version 7.0.1), this is how you can suspend ReSharper from the Tools > Options > Re...
How do I reset the scale/zoom of a web app on an orientation change on the iPhone?
When I start my app in portrait mode, it works fine. Then I rotate into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice, first to zoom all the way in (the normal double tap behavior) and again to zoom all the way out (again, ...
How do you create a yes/no boolean field in SQL server?
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The equivalent is a BIT field.
In SQL you use 0 and 1 to set a bit field (just as a yes/no field in Access). In Management Studio it displays as a false/true value (at least in recent versions).
When accessing the database through ASP.NET it will expose the field as a boo...
Get loop counter/index using for…of syntax in JavaScript
I understand that the basic for…in syntax in JavaScript looks like this:
11 Answers
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Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
There has been a long standing issue with Firefox not loading font from different origin than the current webpage. Usually, the issue arise when the fonts are served on CDNs.
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